E560 FD Rel10 Part5 SCADA Functions

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RTU560Remote Terminal Unit

RTU560 Function Description Release 10

Part 5: SCADA Functions

Contents: This document describes the SCADA functions of the RTU560.


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Revision

Document number: 1KGT 150 737 V001 1

Revision Date Description

0 6/2010 Initial version

1 05/2011 Update Release 10.2New: Indeterminate position supervision for DPI

We reserve all rights in this document and the information containing therein.Reproduction, use or disclosure to third parties without permission is strictly

forbidden

Copyright 2011 ABB, Mannheim/Germany


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Contents

Revision ...........................................................................................III

Contents ........................................................................................... V

Abbreviations .................................................................................. V

1 Introduct ion............................................................................ 1-5

1.1 About the RTU560 Funct ion Descript ion .................................... 1-5

1.2 About this document ................................................................... 1-5

2 SCADA Monitoring Direct ion ................................................ 2-5

2.1 Indication Processing.................................................................. 2-5

2.1.1

Function Distribution ......................................................... 2-5

2.1.2 Binary Input Functions ...................................................... 2-5

2.1.3 PDP Functions of the CMU ............................................... 2-5

2.1.4 Error Handling .................................................................. 2-5

2.2 Analog Measured Information Processing ................................. 2-5

2.2.1 Analog Measured Information (AMI) Types ....................... 2-5

2.2.2 Function Distribution ......................................................... 2-5

2.2.3 Analog Input Board Functions ........................................... 2-5


2.2.5 Error Handling .................................................................. 2-5

2.3 Digi tal Measured Value Processing ............................................ 2-5

2.3.1 Binary Input Board Functions............................................ 2-5

2.3.2

PDP Functions of the CMU ............................................... 2-5

2.3.3 Error Handling .................................................................. 2-5

2.4 Bit -string Input Value Processing ............................................... 2-5



2.4.3 Error Handling .................................................................. 2-5

2.5 Integrated Total Processing ........................................................ 2-5

2.5.1 Integrated Total Value Types ............................................ 2-5




2.5.5 Error Handling .................................................................. 2-5

2.6

Direct Interfacing of Current and Voltage Transformer ............. 2-5

2.7 Log ic Functions........................................................................... 2-5


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3 SCADA Command Direct ion ................................................. 3-5

3.1 Function Distribution................................................................... 3-5

3.2 Object Command Outpu t............................................................. 3-5

3.2.1

Single Object Command Output........................................ 3-5

3.2.2 Double Object Command Output....................................... 3-5

3.2.3 Output Procedures................. Error! Bookmark not defined.

3.2.4 Object command output limitations.................................... 3-5

3.3 Regulation Step Command Output ............................................. 3-5

3.3.1 Functionality ..................................................................... 3-5

3.3.2 Regulation command output limitations............................. 3-5

3.4 Setpoint Command Output ......................................................... 3-5

3.4.1 Analogue Setpoint Command Output ................................ 3-5

3.4.2 Digital Setpoint Command Output ..................................... 3-5

3.4.3 Setpoint output limitations ................................................. 3-5

3.5 Bit -String Output ......................................................................... 3-5

3.5.1

Functionality ..................................................................... 3-5

3.5.2 Error Handling .................................................................. 3-5

3.5.3 Bitstring output limitations ................................................. 3-5


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Abbreviations

CMU Communication and Data Processing Unit

AMI Analog Measured value Input

ASO Analog Set point command Output

BCU Bus Connection Unit

BSI Bit String Input (8, 16 bit)

BSO Bit String Output (1, 2, 8, 16 bit)

CS Control System

CSC Command Supervision Channel

CS-Command Clock Synch Command

CRC Cyclic Redundancy Check

CTO Common Time Object

DCO Double Command Output

DMI Digital Measured value Input (8, 16 bit)

DPI Double Point Input

DSO Digital Set point command Output (8, 16 bit)

EPI Event of Protection equipment Input (1bit)

GCD General Configuration Data

HCI Host Communication Interface

IED Intelligent Electronic Device

IIN Internal Indication

IOC I/O Controller (Controller on I/O Board)

IOD Input Output Data

IOM I/O Bus Master (Function of SLC)

ITI Integrated Totals Input

MFI Analog Measured value Floating Input

MPU Main Processing Unit

NCC Network Control Center

PB Peripheral Bus

PBP Peripheral Bus Processor

PDP Process Data Processing

PLC Programmable Logic Control

PPP Point to Point Protocol

PSU Power Supply Unit

RCO Regulation step Command Output

RTC Real Time Clock

SBO Select Before Operate

SCADA Supervision, Control and Data Acquisition


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SCI Sub-Device Communication Interface

SCO Single Command Output

SEV System Events

SLC Serial Line Controller

SOC Strobe Output Channel

SOE Sequence-of-Event Queue

SPI Single Point Input

STI Step position Input (8 bit)

TSI Time Synch Input

TSO Time Synch Output


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1 Introduction

1.1 About the RTU560 Function DescriptionThe RTU560 Function Description consists of several parts:

1 KGT 150 733 Part 1: Overview Overview of the RTU560product family and systemarchitecture

1KGT 150 734 Part 2: Rack Solutions Description of the RTU560rack solutions

1KGT 150 735 Part 3: DIN Rail Solutions Description of the RTU560DIN rail solutions

1KGT 150 736 Part 4: Hardware Modules Overview of the RTU560 rackand DIN rail modules

1KGT 150 737 Part 5: SCADA Functions Description of the RTU560SCADA functions

1KGT 150 738 Part 6: RTU560 Functions Description of the RTU560functions

1KGT 150 739 Part 7: Archive Functions Description of RTU560specific Archive functions

1KGT 150 740 Part 8: Integrated HMI Description of the integratedHMI interface

1.2 About this document

This document describes the supervisory control and data acquisition (SCADA) functionsof the RTU560 in monitoring and command direction.


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2 SCADA Monitoring Direction

The following SCADA monitoring functions are described for the binary input boards23BE23, 23BE40, 23BE50, 23BI61, and the analogue input boards 23AE23, 23AI60 and

23PT60 as well as for the binary and analogue inputs of the integrated multi input/outputboards of the 560CIG10

2.1 Indication Processing

There are two types of indications:

Single point input (SPI)

Double point input (DPI)

Figure 2-1 shows the signal definition for SPI and DPI. Double indications arerepresented by two sequential bits within a binary input board. The normal state of a DPIis a non-equivalent bit combination (10 or 01). An intermediate state (00) is given duringthe runtime of a unit from one position to the other (e.g. an isolator from OFF to ON).

Figure 2-1: Indication Type Defin ition

The definition of the bit position for ON and OFF can be changed for the wholeconfiguration. If changed, this definition is also valid for DCO and RCO commands.

Parameter: Change ON and OFF connection point (RTU Parameters)

Within an indication board, any type of binary input can be mixed but it has to beconsidered that a DPI can start on odd bit-positions only. Inputs not assigned to DPI orSPI may be configured to indications as pulse counters, digital measured values on bitstring inputs. Digital measured values and bit string inputs must be configured as startingeither with bit position 1 or 9.

ON

1

0

01

OFF

10 00 01 11

ON 1

OFF 0

0 1 0

Signal state Double point indication (DPI) Signal state Single point indication (SPI)

normal position intermediate position

OFF ON OFF ON OFF

DPI 8 DPI 7 DPI 6 DPI 5 DPI 4 DPI 3 DPI 2 DPI 1

1234567891011131415 1216 Bit position within board

DPI number within board

ONOFF

faulty position


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2.1.1 Function Distribution

The process data acquisition functions for indications processed by the RTU560 can besplit into functions handled by the:

I/O controller (IOC) of the binary input boards

process data processing (PDP) part of the CMU

protocol specific communication interface part at a CMU

The data processing functions of the communication interface is described in thedocumentation of the specific communication protocol.

Binary input board functions:

Reading input register (every millisecond)

Digital filter (contact bouncing)

Oscillation suppression (signal chattering)

Signal inversion

Time out monitoring for DPI intermediate position

Store events in FIFO with time stamp

CMU - PDP:

Intermediate midpoint position handling for DPI

Command output response

Group signals

Transmission to internal communication

2.1.2 Binary Input Functions

The IOC of the binary input boards supports the indication functions. The parameter ofeach function is loaded from the PDP part of the CMU at start up or if it has to beinitialized. Some parameters are valid for all of the 16 inputs; others can be setindividually per input.

The binary input boards read all of the 16 inputs periodically every millisecond regardlessof the specified data point type. The IOC handles the necessary activities for all 16 bitswithin that millisecond. Reading every millisecond allows the high event resolution forindications. Each board does this independently from each other for a block of 16 bits.

If the data point is Blockedthe status is set to blocked and no changes are reported fromthe PDP.

Parameter: Blocked (SPI/DPI PDP Parameters)

Digital Filter

The configuration parameter Digital filterspecifies how many milliseconds an input has tobe stable before it is accepted as a new signal state. The typical value is 10 ms. Digitalfilter is used to prevent ordinary contact bouncing.

Parameter: Digital filter (SPI/DPI PDP Parameters)


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If an indication has changed its state and should be transmitted as an event to the PDP,the time stamp of the event is the time of the last edge before the filter time elapsed.

Figure 2-2: Digital Filter for Contact Bouncing

01234567

1ms

1

0

255

input channel

digital filter timecounter

time

event into FIFOwith

time stamp of (a)

(a)

digital filter time(e.g. 7 ms)


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Oscillation Suppression

Indications which change their state very often produce a higher transmission load toNCC. To prevent a permanent transmission it is possible to specify an automaticindication blocking if the number of events per time period exceeds a defined value.Oscillation suppression may be activated or deactivated individually per indication. Theconfiguration parameter is Maximum chatter frequency

Maximum chatter Frequency is defined to:

The monitoring period is calculated:

Parameter: Maximum Chatter Frequency (SPI/DPI PDP Parameters)

Toscis the monitoring period. The maximum value is 100Hz, a typical value is 2.

The binary input board is loaded with the parameter. Each leading edge of 0->1 starts themonitoring period tosc. Within that time interval each leading edge increments the chattercounter register of that indication. The third change within that period puts the indicationinto the dynamically blocked state. The binary input board informs the PDP by an internalevent. It starts a reset time period (fix to 60 seconds). Within that reset time, each newstart trigger (0->1 edge) starts toscagain. If the indication state is stable for at least thisreset time period, the binary input board informs PDP again by an internal event.

Figure 2-3: Oscill ation Suppression

Input channel

23

10

0

1

60 sec

event into FIFOevent into FIFO

chatter counter

with status:Input = Invalid

with status:Input = Valid

reset time

time

indication

register

tosc tosc tosc

number of changessecond

MAX CHA FREQ

]dsmillisecon[2000

FREQCHAMAXTosc


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Intermediate Position Handling for DPI

The binary input board handles the two bits of the double indication. Signal state changesof the DPI are transmitted to the PDP. Intermediate positions (00) are indicated by aspecial status bit to PDP. The binary input board monitors the time window for

intermediate position. The time out value is loaded as a parameter from PDP. If the DPIdoes not get a new end position within the allowed time, the binary input board generatesan event with the actual state and status DPI intermediate position time out.

FIFO storage

To de-couple event bursts from I/O bus transmission etc., the events are stored into thebinary input board FIFO (First in, first out buffer). Up to 50 events can be stored within theFIFO. If the FIFO becomes full, the binary input board stops its activities until there isspace. Each event has a time stamp with a resolution of one millisecond within a minute.The absolute time is expanded by the PDP.

2.1.3 PDP Funct ions of the CMU

The PDP receives all events out of the binary input board FIFO. The PDP handles allother functions specified for that indication.

Command output response

The functionality of a response indication to stop a related command output pulse isdescribed in the command processing section of this document.

Intermediate Position suppression for DPI

This function is only valid for double indications (DPI). Figure 2-4 shows how it is handledwithin the RTU560.

The configuration parameter Supervision Time for Midpoint specifies whether or not aDPI message should be transmitted for the event. When the indication changes to a mid-

position (00), PDP keeps the first signal change internal. If an abnormal situation occurs,the message of the leading edge is additionally sent to the NCC and allows a moredetailed analysis of the error situation of the unit.

The parameter Supervision time for midpoint specifies the time window in which theRTU560 should inhibit the transmission of the mid-position (00). If the new state is notindicated to the RTU in this time the RTU generates a DPI telegram with the actualposition (normally then 00). The qualifier IV (invalid) keeps 0, because this is a validprocess information.

Parameter: Supervision time for midpoint (DPI PDP Parameters)

Indeterminate Position suppression for DPI

This function is only available for double indications (DPI).

The configuration parameter Supervision time for indeterminate position specifieswhether or not a DPI message should be transmitted for the event when the indicationchanges to the indeterminate position (11). If the supervision is enabled PDP suppressesthe signal change to the indeterminate position.

The parameter Supervision time for indeterminate position specified the time windowwhere the RTU560 should inhibit the transmission of the indeterminate position. Whenthe supervision time is over and the DPI is still in the indeterminate position RTU560generates a DPI telegram with the indeterminate position value and the qualifier IV(invalid) set to false.


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Parameter: Supervision time for indeterminate position (DPI PDP Parameters)

Figure 2-4: Mid-Position suppression for Double Point Inputs

Supervision time for mid point = active

ON

OFF

1

0

0

1

ON

OFF

1

0

0

1

ON

OFF

1

0

0

1

Supervision time

DPI

Normal signal state change

Abnormal state change


ON -> OFF

ON -> intermediate -> ON

time out

ON

OFF

1

0

0

1

ON

OFF

1

0

01

ON

OFF

1

0

0

1

Normal signal state change



ON -> OFF

ON -> intermediate -> ON

time out

DPI

DPI

DPI

DPI DPI

DPI DPI

DPI

Supervision time for mid point = inactive


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Signal Inversion

After having a stable indication signal, it is possible to define its logical state,corresponding to the signal voltage level. This function is called the signal inversion. Theinversion is defined by a configuration parameter Invert the input value.

INVERSION = NO INVERSION = YES

logical 0 = OFF 0 V Process Voltage

logical 1 = ON Process Voltage 0 V

Table 2-1: Definiti on of Inversion

All other functions are then based on the signal state given by the inversion parameter.

Parameter: Invert the input value (SPI/DPI PDP Parameters)

2.1.4 Error Handl ing

Binary input board failure

A board can be set "out of service" if:

the board has never been in service(configuration error)

the board failed during normal operation(hardware failure, I/O bus failure etc.)

the board has been removed or rack power was lost.

If a board is set out of service the qualifiers of all configured indications are setINVALID due to board failure. The RTU560 treats all DPI and SPI messages of thatboard with qualifiers IV = 1.

A board can be set in service again during runtime if:

the board is replaced

power is turned on again in the rack

the I/O bus is working properly

When this happens, the following sequence recovers the indications:

normalize the binary input board

load all parameters for the configured indications (done by PDP)

read all values (signal state)

Reset qualifier IV to 0 and transmit the actual value and qualifier status to NCC.

Dynamic Qualifi er Changes

An indication can change qualifier status at runtime if:

the binary input board fails (qualifier IV = 1)

the oscillation suppression is activated and triggered for that indication.


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2.2 Analog Measured Information Processing

2.2.1 Analog Measured Information (AMI) Types

Each analog value is converted by the analog digital converter (ADC) of the analog inputboards into a signed integer presentation. The presentation is shown in Figure 2-5. The100% input signal value is represented with 12 bit plus sign.

Figure 2-5: Analog Value Presentation by ADC

The PDP converts the value to a normalized presentation.


The process data acquisition functions for analog measured information processed by theRTU560 can be split into functions handled by:

IOC of the analog input board

Process data processing (PDP) part of the CMU

Protocol specific communication interface at a CMU


2000

3000

1000

-2000

-3000

-20 -15 -10 -5 5 10 15 20

Input signal

[digits]

[e.g. mA]

-100 25 50 75 100 [%]

Analog Value Presentation according to IEC 870-5-101

e. g. - 20. . +20mA

- 4096

+ 4096


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Analog input board functions:

Scan analog input cyclically

Zero value supervision and switching detection

Smoothing

Threshold supervision on integrator algorithm

Periodic update of RTU data base

Store events into FIFO with time stamp

CMU - PDP functions:

Unipolar and live zero conversion

Scaling

Threshold supervision on absolute threshold value


2.2.3 Analog Input Board Functions

The IOC of the boards supports the analog measured information functions. Theparameters of each function and each AMI are loaded from PDP at start up or if the boardmust be initialized during runtime.

If the data point is blocked the status is set to Blockedand no changes are reported fromthe PDP.

Parameter: Blocked (AMI PDP Parameters)

Line Frequency and Scan Cycle

Each channel is scanned by the IOC of the analog input boards cyclically. The scan cycleis given by the AC line frequency:

50 Hz: 580 milliseconds for all 8 channels

60 Hz: 500 milliseconds for all 8 channels

16.6 Hz: 1620 milliseconds for all 8 channels

The scan frequency is independent from the number of configured channels. The Linefrequency must be equal to the analog input boards hardware setting (board wideparameter).

Parameter: Line frequency (AMI PDP Parameter)


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Zero Value Supervision and Switching Detection

A low input signal can be forced to 0 %. This allows rejecting noise on the input signalproduced by the transducer etc. The zero value supervision is configurable with

RTUtil560 between 0.1% and 5%. The default value is set to 0.25 %.

Parameter: Zero Range (AMI PDP Parameter)

The switching detection is a special function of the analog input boards. It is used to forcea value update to PDP if a signal changes only some few percent from/to zero. Thefunction is only active when threshold supervision with integration is selected. Thethreshold supervision on integrator algorithm would need some cycles before thethreshold is exceeded and reported to NCC. This gives a transient situation, e.g. the 380kV transmission line is switched but the actual current does not change more or lessimmediately.

Switching detection operates in that form that every time a signal changes to/from 0 %from/to more than 2.5 % the new value is transmitted to PDP immediately. If the newvalue is below 2.5 % an event is not forced. PDP transmits the received value to NCCregardless of any other parameter.

Switching detection is a fixed parameter and can not be parameterized

Figure 2-6: Zero Value Supervision and Switch ing Detection


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Smoothing

Unstable input signals may be smoothed to prevent too many CS updates. Smoothingcan be parameterized per input by the configuration parameter Smoothing. No smoothingcan be configured. The smoothing factor is given in binary factors.

Parameter: Smoothing (AMI PDP Parameter)

Figure 2-7: Smooth ing of Analog Values

The IOC calculates the new value by the formula:

aglagl

ngl MWKMWMWMW

MWngl = new calculated analog measured value

MW = raw analog measured value (result of A/D conversion)

MWagl = last calculated value

k = smoothing factor (1, 2, 4, 8, 16, .. 128)


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Threshold Supervision on Integrator Algorithm

Threshold supervision can be done in two different ways within RTU560. The decision ofwhich method to take depends on the configured parameters.

If threshold supervision with integration is selected, it is done via the analog input boards.The IOC calculates at each cycle the difference between the last reported analog value

and the actual value. The difference is added to the accumulated value in the thresholddifference register. If the accumulated deltas exceed the parameterized threshold value,the actual value is stored into the FIFO and reported to the PDP. The actual valuebecomes the last reported value. The threshold difference register is set to zero. Theaccumulation is done in consideration of the sign of the difference.

Figure 2-8: Threshold Supervision wi th Integration


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The threshold difference register is cleared if:

the value exceeds the threshold value

the switching detection supervision was triggered

the value passed a monitored limit

The threshold value can be parameterized by Threshold. To be independent of the scancycle the threshold is calculated on threshold integration per second. The threshold isrescaled according to the Line frequency:

50 Hz: threshold base 1s = Threshold/ 0.58 = 12%

60 Hz: threshold base 1s = Threshold/ 0.5 = 10%

16.6 Hz: threshold base 1s = Threshold/ 1.62 = 25%

Parameter: Threshold ( AMI PDP Parameter)Line frequency ( AMI PDP Parameter)

Periodic update of RTU data base

If a periodic update of the RTU560 data base is required, the analog input boards can beparameterized to transmit the AMI periodically. The configuration parameter PeriodicUpdate specifies how often the data base should be updated.

Parameter: Periodic Update ( AMI PDP Parameter)

The periodic update is independent of threshold supervision with integration. That meansa value might be transmitted twice to PDP in a cycle:

caused by threshold exceeding

caused by periodic update

The periodic update time is selectable between 1, 2, 4, 8, 30 and 60 seconds.

FIFO storage of the analog input boards

To de-couple event bursts from I/O bus transmission etc. the events are stored into theanalog input boards FIFO. Up to 50 events can be stored within the FIFO. If the FIFObecomes full and the IOC has to store events it stops its activities until there is space.Each event has a time stamp with a resolution of one millisecond within a minute. Theabsolute time is expanded by the PDP.

For each measured value written to the FIFO the IOC reads the actual time. The effectivetime quality is equivalent to the scan cycle of the analog input board.


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Bipolar, Unipolar and Live Zero conversion

The input signal type allows specifying unipolar input signals. That means a negativevalue is not allowed. The RTU560 flags a unipolar defined input signal with the qualifier

invalid (qualifier IV = 1) if the value becomes negative (> Zero Value Supervision).Input signals with live zero presentation (standard = 4..20 mA) are transformed to thestandard presentation of 100% respectively 0% up to 100 % by the PDP. Theconversion is done in the form that:

20 % of the input signal rage (standard: 4 mA) becomes 100% respectively 0% ofthe normalized AMI value

100 % of the input signal rage (standard: 20 mA) becomes 100 % of thenormalized AMI value

Input signals below 20 % (4 mA) are set to 100% respectively 0%. For a value below3,5 mA the AMI is indicated to be faulty (qualifier IV=1)

The configuration parameter Input signal typespecifies the input is a bipolar, a unipolar ora live zero signal. The configuration parameter Input signal rangespecifies the hardwaresetting of the analog input boards.

Parameter: Input signal range (AMI PDP Parameter)

Input signal type (AMI PDP Parameter)

Adjust zero value for live zero signal (AMI PDP Parameter)

Scaling

The PDP converts the value to a normalized AMI format. The parameter Conversionfactorspecifies the percentage of the maximum input signal that is defined as 100 % of

the normalized value.

Parameter: Conversion factor (AMI PDP Parameter)


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Figure 2-9: Example unipolar/bipo lar Measurement

Figure 2-10: Example Live Zero measurements

Figure 2-11: Example Conversion Factor and Adjust L ive Zero

1 1

20 40 60 80 100

[% Imax]

8 16 24 32 40

Live Zero 4 40 mA

[mA]1 5 mA

2 10 mA

4 20 mA

8 40 mA

-100

-1 -1

1 1

20 40 60 80 100

[% Imax]

8 16 24 32 40

Live Zero 4 40 mA

[mA]1 5 mA

2 10 mA

4 20 mA

8 40 mA

-100

-1 -1

1 1

-1

100%100%

Unipolar Bipolar

-1

-100% -100%

1 1

-1

100%100%

Unipolar Bipolar

-1

-100% -100%

1

-1

1

-1

20 40 60 80 100 4 12 20

[mA][%]

Conversion Factor Adjust Live Zero

-100

1

-1

1

-1

1

-1

1

-1

20 40 60 80 100 4 12 20

[mA][%]

Conversion Factor Adjust Live Zero

-100


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Threshold Supervision on absolute Threshold Value

Threshold supervision can be done on two different methods within RTU560. Thethreshold supervision on absolute threshold value is done in the PDP.

In this mode the PDP checks each AMI received from the analog input boards against thelast reported value. If the new value exceeds the last reported value plus threshold the

received AMI will become last reported value and is transmitted to NCC.The threshold value can be parameterized by Threshold. The threshold is monitoredevery nn seconds. Therefore the analog input board transmits the actual valueperiodically. The period is given by the configuration parameter Periodic update.

Parameter: Threshold (AMI PDP Parameter)

Periodic update (AMI PDP Parameter)

Figure 2-12: Threshold Supervision on Absolute Value

Only one method can be used for threshold supervision. Either the integration method ornor absolute threshold.

20

40

60

80

100

periodicupdate cycle (uc)

Input

[%]

time

new value

new value

new value

new value

new value

New value transmission to CCI

threshold value


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AMV overflow and/or A/D converter errors

The analog input board checks at start up and during each conversion the functionality ofthe A/D converter. If an error is detected the AMIs are marked invalid. The qualifier IV is

set to 1 and transmitted to NCC with the new state.For AMIs with live zero conversion, a value below 3,5 mA is marked as invalid.

Analog input boardsboard failure

An analog input board can be set "out of service" if:



the board has been removed on-line or subrack power was lost.If a board is set out of service all configured AMIs are set to the invalid state. TheRTU560 transmits all AMI messages of that board to the NCC with the qualifier IV = 1.

An analog input board can be set in service again during runtime:

if the board is replaced

if power is turned on again in the rack

if the I/O bus is O.K.

When this happens, the following sequence recovers the AMIs:

normalize the analog input board

load all parameters for configured channels (from PDP)

read all values and update status

reset qualifier IV to 0 and transmit the actual value and qualifier status to NCC.


An AMI can change qualifier status at runtime if:

the analog input board fails (qualifier IV = 1)

the live zero supervision detects a current below 3.5 mA (qualifier IV = 1)

the unipolar value is below Zero Range(qualifier IV=1)

the value has an overflow of the ADC signal input (qualifier OV = 1)

the scaling by means of conversion factor gives a result of more than 100 %(qualifier OV = 1)


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2.3 Digital Measured Value Processing

There are two types of digital measured values:

Digital measured input value (DMI)

Step position input value (STI)

The RTU560 can handle different bit patterns to read and convert them into a digitalmeasured value:

8 bit digital measured value (DMI8)

16 bit digital measured value (DMI16)

8 bit step position value (STI)

The RTU can handle conversions for:

binary data (BIN)

binary coded decimals (BCD) Gray code (GRAY)

The maximum length of a digital measured value is the word of 16 bit (= one binary inputboard). Double word values (32 bit) are not supported.

Digital measured value presentation

Each type is converted and scaled by the PDP.


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Figure 2-13: Digital Measured Value presentation


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2.3.1 Binary Input Board Functions

The IOC of the binary input boards supports the digital measured value (DMI) functions.The parameter of each function and each DMI is loaded from PDP at start up or if theboard must be initialized during runtime.

The binary input board reads all 16 inputs periodically every millisecond regardless of thespecified data point type. The IOC handles the necessary activities for all 16 bits withinthat millisecond.


Parameter: Blocked (DMI/STI PDP Parameters)

Digital filter

The configuration parameter Digital filterspecifies how many milliseconds an input must

be stable before it is accepted as a new signal state. The typical value is 10 ms. Digitalfilter are used to prevent ordinary contact bouncing.

Parameter: Digital filter (DMI/STI PDP Parameters)

Consistency check

A DMI is a bit pattern of 8 or 16 bit length. The value is valid only if all binary channels ofthe DMV are valid and stable for at least the consistency check time. This is given if noinput changed for the parameterized consistency check time. Any change on an inputchannel re-triggers the settling time.

The minimum settling time is defined by the PDP parameter Consistency check time. Theminimum consistency time is 100 milliseconds.

Parameter: Consistency check time (DMI/STI PDP Parameters)

FIFO storage of binary input boards

If a DMI has changed and is stable for at least the consistency time, it is stored into theFIFO and transmitted to the PDP.


The PDP receives all events out of the binary input boards FIFO. The PDP handles allother functions specified for that DMI.

Signal Inversion

Inversion is only possible for DMI not for STI inputs. The PDP parameters Invert inputsignaland Invert sign of input valuespecify a bit inversion of the digital input value. Theinversion of the sign bit can be configured independent from the inversion of the valuebits.

Parameter: Invert the input signal (DMI PDP Parameters)


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Invert the sign of input value (DMI PDP Parameters)

Figure 2-14: Example for inversion of DMI8

Scaling and format conversion

The PDP parameter DMI/STI Value presentation and Input signal type specifies whichDMI type is connected to the binary input board.

STI values are always handled as 7 bit signed integer, range -63 ... +63. For DMI inputs,the parameter Maximum valuespecifies the binary value that is converted to 100 % of thescaled DMV value. The binary value of the STI is limited to the range 63 to +63.

Parameter: DMI/STI Value presentation (DMI/STI PDP Parameters)

Input signal type (DMI PDP Parameters)

Maximum value (DMI PDP Parameters)


Binary input board failure

Binary input boards can be set "out of service":


the board failed during normal operation

(hardware failure, I/O bus failure etc.) the board has been removed or subrack power was lost.

If a board is set out of service the configured digital measured values are to the invalidstate. All DMI/STI are set faulty. The RTU560 transmits the DMI/STI values of that boardto the NCC with the corresponding message and the qualifier IV = 1.

Binary input boards can be set in service again during runtime if:



the I/O bus is O.K.

DMI 8

Process Input

S 7 6 5 4 3 2 1

PV 0V 0V 0V 0V 0V 0V PV

1 0 0 0 0 0 0 1

1 1 1 1 1 1 1 0

0 1 1 1 1 1 1 0

Invert the

input value

Invert the

sign

= YES

= YES

= NO

= YES

0V = 0V; PV = Process voltage; S = Sign bit

= NO = NO

0 0 0 0 0 0 0 1= NO = YES


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When this happens the following sequence recovers the DMIs:

normalize the binary input boards

load all parameters for the configured DMIs/STIs (done by PDP)

read all values



A DMV can change qualifier status at runtime if:


if the maximum value specified for a DMI input is exceeded (qualifier 0V = 1)

if any digit of a BCD coded DMI input has an invalid code > 9 ( Qualifier IV = 1)


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2.4 Bit-str ing Input Value Processing

The RTU560 can handle bit patterns to read them and convert them into a bit-string inputvalue (BSI):

8 bit bit-string (BSI8)



The maximum length of a bit-string is the word of 16 bit (= one binary input board).Double word values are not supported.

A 32 bit bit-string input is only supported by selected subdevice communicationinterfaces.

If an eight bit pattern is selected the residual 8 bit of the binary input board can be usedfor another digital value, for pulse counter values or indications.


The data acquisition functions for digital measured values processed by the RTU560 canbe split into functions handled by:

IOC of the binary input board


Protocol specific communication interface part at a CMU


Binary input board functions:



Consistency check

Store events in FIFO with time stamp

CMU - PDP:



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The IOC of the binary input boards supports the bit-string input (BSI) functions. Theparameter of each function and each BSI is loaded from PDP at start up or if the boardmust be initialized during runtime.

The binary input board reads all 16 inputs periodically every millisecond regardless of thespecified data point type. The IOC handles the necessary activities for all 16 bits withinthat millisecond.


Parameter: Blocked (BSI PDP Parameters)

Digital filter

The configuration parameter Digital filterspecifies how many milliseconds an input mustbe stable before it is accepted as a new signal state. The typical value is 10 ms. Digital

filter are used to prevent ordinary contact bouncing.Parameter: Digital filter (BSI PDP Parameters)

Consistency check

A BSI is a bit pattern of 8 or 16 bit length. The value is valid only if all binary channels ofthe BSI are valid and stable for at least the consistency check time. This is given if noinput changed for the parameterized consistency check time. Any change on an inputchannel re-triggers the settling time.

The minimum settling time is defined by the PDP parameter Consistency check time. Theminimum consistency time is 100 milliseconds.

Parameter: Consistency check time (BSI PDP Parameters)

FIFO storage of the binary input boards

If a BSI has changed and is stable for at least the consistency time, it is stored into theFIFO and transmitted to the PDP.


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Binary Input Board failure

A binary input board can be set "out of service":




If a board is set out of service the configured digital measured values are to the invalidstate. All BSI are set faulty. The RTU560 transmits the BSI values of that board to theNCC with the corresponding message and the qualifier IV = 1.

A binary input board can be set in service again during runtime if:



the I/O bus is O.K.

When this happens, the following sequence recovers the BSIs:


load all parameters for the configured BSIs (done by PDP)

read all values



A BSI can change qualifier status at runtime if:



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2.5 Integrated Total Processing

2.5.1 Integrated Total Value Types

There are two types of integrated total values (ITI) defined in the RTU560:

End of period reading counters (EPR)

Intermediate reading counters (IR)

Both types have only one source and the IR is only an intermediate value of thecorresponding EPR. That means there is one ITI which is transmitted periodically in fixedperiods.

Figure 2-15: Integrated Total Values Defini tion for EPR and IR

Integrated Total Value presentation

Although the internal value representation is 32 bit signed integer the RTU560 supportson its local inputs positive ITI values only. This allows ITI values between:

0 .. and...+ 2 147 483 647

Period Period PeriodPeriod

Intermediatereading

cycle

End ofPeriodreading

End ofPeriodreading

End ofPeriodreading

End ofPeriodreading

Counts

time

Integrated Total Values with reset to zero at end of period

The IR reading cycle must be 1/n of end of period time

e.g.: if period = 60 minutes and n = 5 the IR cycle = 12 min

IRreading


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The process data acquisition functions for ITIs processed by the RTU560 can be split intofunctions handled by:

IOC of the binary input boards


Protocol specific communication interface part at a CMU


23BE23 functions:



Increment integration register

Freeze integration register into relocation register

CMU - PDP:

Freeze and read ITIs periodically



The IOC of the binary input boards supports the integrated total functions. The parameterof each function is loaded from PDP at start up or if it must be initialized. Parameters canbe set individually per input.

The binary input boards read all 16 inputs each millisecond. If the channel is configured

for integrated total a signal change of 0->1 is accepted after digital filtering to be a pulsecount and increments the pulse counter register.

Whenever the PDP sent a broadcast command to freeze counter values, the the binaryinput boards read the actual integration register and stores the contents into therelocation register. The PDP receives the f rozen ITI value from the 23BE23/23BE40.

Digital filter

The configuration parameter Digital filterspecifies how many milliseconds an input mustbe stable before it is accepted as a new signal state. The typical value is 10 ms. Digitalfilter are used to prevent ordinary contact bouncing.

Parameter: Digital filter (ITI PDP Parameters)


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Integrated Total Frequency

The binary input boards can read ITI counter increments with a frequency of max. 120Hz. The default digital filter is 10 ms (necessary when normal relay contacts are used).The ratio for the 0 and 1 state should be 1:1.

Freeze ITI value

EPR or IR readings are forced by the PDP periodically. The PDP sends a broadcastcommand to all I/O boards: "freeze ITI registers".

Each binary input board on which ITIs are configured stores the actual integrated totalregister contents into a relocation register. This is done within the normal signalprocessing, the integrated total register continues counting. The frozen values aretransmitted afterwards to the PDP.


Reading ITI counter values and update ITI status

Reading is done:

for each configured IR cycle

for each configured EPR period

The frozen ITI values are read from all ITIs which are configured for the actual period. It isnot necessary to have all ITIs in the same EPR periods or IR cycles.

There are some qualifier information, which inform the NCC about the quality of the ITI.These qualifiers are updated at each ITI reading.

EPR / IR parameters

With the PDP parameterAcquisition of end of period reading ITIthe transmission of EPRreadings can be switched off or the EPR period in minutes is specified. The parameterEnd of period wrap around counterspecifies that the ITI value is not reset after an EPR

reading.

Parameter: Acquisition of end of period reading ITI (ITI - PDP parameters)

End of period wrap around counter (ITI - PDP parameters)

With the PDP parameter Acquisition of intermediate reading ITI the transmission of IRreadings can be switched of or the IR period is specified. With Unit of IR cycle it ispossible to decide whether IR period is defined in second or minute cycles.

Parameter: Acquisition of intermediate reading ITI (ITI - PDP parameters)

Unit of IR cycle (ITI - PDP parameters)

CA = Counter was adjusted since last readingThis flag is set if the counter is:

restarted due to RTU560 restart

the time changed during the period / cycle(new time synchronization)

If the RTU560 system time has changed due to a new received time base (hardsynchronization) the CA qualifier is set. CA is set if the time changed more than 5seconds from the old system time.


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The flag is set in the first telegram of an intermediate value (IR) and in the first telegramof an end of period value (EPR). If the EPR telegram comes first the qualifier is not set inthe following IR telegram.

IV = ITI is invalid

This flag is set if the ITI value is not valid because the PDP could not receive the valuefrom the binary input board.

Figure 2-16: Reading ITI wi thin the RTU560

IT = Invalid t ime

This flag is set in the time information element of the ITI telegram until the RTU560 has avalid system time and is synchronized after start up.


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Binary Input Board failure

A binary input board can be set "out of service" if:




If a board is set out of service the configured ITIs qualifiers are set to invalid due toboard failure. The RTU560 transmits all ITI messages of that board to the NCC with anITI message and the qualifier IV = 1.

A binary input board can be set in service again during runtime if:



the I/O bus is O.K.

When this happens the following sequence recovers the pulse counter values:


load all parameters for the configured channels (done by PDP part of CMU)

read all values and update status

Reset qualifiers IV for affected ITIs


An integrated total value can change qualifier status at runtime if:



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2.6 Direct Interfacing of Current and Voltage Transformer

The Current/Voltage Transformer Interface 560CVT02/10 is used for monitoring inputsignals from three independent phases with 3 or 4 wire connections. The following

measurements are available:Measurement Measuring Path(s)

Voltage (V) 1-N, 2-N, 3-N, 1-2, 2-3, 3-1

Current (A) 1, 2, 3, N

Active Power 1, 2, 3,

Reactive Power

Apparent Power

Power Factor 1, 2, 3,

Frequency (Hz) Phase 1 only

Accumulated values are stored in energy registers of the 560CVT02/10 as long integervalues. On power up these values are reset to zero. The accumulated values arecyclically transmitted to the RTU560:

Active Energy 3-phase

Apparent Energy 3-phase

Reactive Energy (Ind.) 3-phase

Reactive Energy (Cap.) 3-phase

The 560CVT02/10 provides a measure of the distortion (THD), in each phase voltage andcurrent waveform, as a percentage deviation from pure 50 Hz or 60 Hz sine waves by

Fast Fourier Transform algorithm (FFT):

U1, U2, U3 % THD

I1, I2, I3 % THD

The measurements (AMI, MFI) are transmitted by the subdevice communicationinterface.

While MFIs are handled in the same way, AMIs are treated differently by the 560CVT02and the 560CVT10. To convert these values into a normalized representation

AMIs are using the parameters primary rated valueand measurement range(560CVT02)

AMIs are using the highest possible value according to the conversion table in theinstruction manual (560CVT10)

All measurements are representing the secondary output of the transformer.

Parameter

Primary rated voltage (560CVT02 parameter)Voltage measurement range (560CVT02 parameter)Primary rated current (560CVT02 parameter)Current measurement range (560CVT02 parameter)

Potential transformer ratio (560CVT10 parameter)Current transformer ratio (560CVT10 parameter)


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For example:

Secondary rated current = 5 Ampere (Value range: 1 5 Ampere)

Current measurement range = 0.5 (Value range: 0.01 1.20)

100 % = 2.5 Ampere (secondary)

Example 120 VRange = 1,0

Value

Lower Limit - 120 Volt - 100 %

0 Volt 0

Upper Limit + 120 Volt + 100 %

The Frequencyis detected at the phase 1 voltage signal and converted to a normalizedrepresentation, using the parameter nominal frequency:

Parameter:Nominal frequency (560CVT02 - parameter)

Frequency Example 50 HzNominal frequency

Value

Nominal frequency * 90 % 45,0 Hz - 100 %

Nominal frequency 50,0 Hz 0

Nominal frequency * 110 % 55,0 Hz + 100 %

The Power Factor (Phase 1, 2, 3 and ) is also a normalized value:

Power factor Value

- 1,000 - 100 %

0 0

+ 1,000 + 100 %

The Total Harmonic Distortion THD (V and C, Phase 1, 2 and 3) is transmitted inpercentage as a normalized value:

THD Value

- - 100 %0 0

100,0 % + 100 %

All Energy Values are cyclically requested by the RTU560 subdevice communicationinterface and transmitted as Integrated Total Information (ITI):

Parameter:

IR / EPR cycle time (560CVT02/10 - parameter)

Wrap around, Pulse quantity (560CVT02/10 - parameter)


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2.7 Logic Functions

The Logic function of the RTU560 provides the possibility to deduce virtual processinformation from process information and system events using logical operations likeAND, OR, Dynamic OR or NOR.

OR groups (>=) AND groups (&)

NOR groups

Dynamic OR groups

Security indication

Security alarm

These Group information are single point information (SPI) data objects that arecalculated from other SPIs or System Events (SEV) or in case of Security indicationand Security alarm - Security Events by logical operations. A group information dataobject can be generated out of all single point information (SPI) and System Events

processed in the RTU560. Group information can also be an input to another groupinformation.

The number of input signals per group information is limited to 32 signals.

The group information output is communicated as SPI event on the internalcommunication. The calculation is done event driven, that means every change of aninput object leads to a recalculation of the deduced process information object. They arecalculated according to the configured logical function type from the selected inputobjects of type SPI or SEV.

The time stamp of the event will be the time of the input signal which forces the newevent message.

OR group

The output signal of an OR group is set to 1 when at least one input signal is set to 1. Thefirst signal, which is set to 1, forces the transmission of the OR group signal.

The output signal of an OR group is set to 0, when all input signals are 0. The trailingedge of the last signal which is set to 0 forces the transmission of the OR group signal.

AND group

The output signal of an AND group is set to 1 when all input signals are set to 1. The lastinput signal which is set to 1 forces the transmission of the AND group signal.

The output signal of an AND group is set to 0, when at least one input signal goes to 0.The trailing edge of this signal forces the transmission of the AND group signal.

NOR group

The output signal of a NOR group is set to 0 when at least one input signal is set to 1.The first signal which is set to 1 forces the transmission of the NOR group signal.

The output signal of a NOR group is set to 1, when all input signal are 0. The trailing edgeof the last signal which is set to 0 forces the transmission of the NOR group signal.

DynamicOR group

The output signal of a dynamic OR group is set to 1 every time a input signal is set to 1.Every signal which is set to 1 forces the transmission of the OR group signal.


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The output signal of a dynamic OR group is set to 0, when all input signal are 0. Thetrailing edge of the last signal which is set to 0 forces the transmission of the OR groupsignal.

Security indication and Security alarm

These two functions differ from all other logic functions by their input parameters:

Generally, these functions have security events as input parameter.Security indication

If one ore more input security event occurs, a pulse of approximately 100ms is generatedat the SPI output.

Security alarm

A security alarm is similar to a Security indication, but the output is triggered only if anyinput event has occurred several times within a specified supervision time period. Theevent count and the supervision time can be configured in RTUtil560.

In case of redundant CMUs the current event count and the current elapsed time will bereset if the active CMU fails, so it's recommended to monitor security event # 5160 ("RTUnew started") to be able to recognize this situation.

Qualifier for group signals

A group signal qualifier represents the logical OR of the qualifiers of all input signals ofthe group information. That means, that if the state of one of the inputs is not equal toO.K., the output of the logic function is set to this state.


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3 SCADA Command Direction

The following SCADA functions are described for the binary output boards23BA20, 23BA40 and 23BO61, and the analogue output boards 23AA21 and

23AO60 as well as the binary outputs of the integrated multi input/output boardwithin the 560CIG10. In addition the functionality of the command supervisionboards 23BA22/23, 23BO62 and the supervision function of the 560CIG10 isdescribed.

The RTU560 knows following output command types:

Command Output

o Single Command Output (SCO)

o Double Command Output (DCO)

Regulation Step Command Output (RCO)

Setpoint Command Outputo Analogue Setpoint Command Output (ASO)

o Digital Setpoint Command Output (DSO)

Bit-string Output Command (BSO)

3.1 Function Distribution

Within RTU560, the different output boards and, if requested, the commandsupervision board 23BA22/23, are responsible to do the command outputs. Theyare coordinated and monitored by the PDP.

The IOCs of the output boards are responsible to switch the output relays or to setthe analog output value. They supervise and monitor also the hardware. Whichkind of output is configured and wired on which channel is loaded by the PDP tothe boards during initialization in a similar form as for the input boards.

3.2 Command Output Procedures

Commands for objects can be given either in a one-step procedure (direct operate)or for higher security requests in a two-step procedure (select before operate). Thetwo-step procedure decreases the residual error probability in command directionessentially.

If the parameter Select before operate only is selected, a select before operateprocedure is necessary. Bit-string outputs (BSOxx) does not support thisparameter.

Parameter: Select before operate only (PDP Parameters)

If the PDP receives a SELECT command, it checks whether the object is availableand if no other object is already reserved. If the check is successful, itacknowledges the reservation with a positive confirmation. The reservation is validfor 20 seconds. Within that time window, either the corresponding EXECUTECommand or a DESELECT command should be received. If not, the PDP clearsthe reservation of the object.

If an EXECUTE command is received within the allowed time, it is checked, if the

referring object is equal to the reserved object. If both objects are the same, thecommand is executed, otherwise the EXECUTE command is rejected and negativeconfirmed. The command procedure is finished, when the activation termination istransmitted for that command.


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RTU560 Function Description Part 5: SCADA Functions SCADA Command Direction

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While a command object is selected, no other command objects within theinterlocking scope of the selected one can be selected. Other selections will berejected. If no object is selected, multiple process command objects can beexecuted in parallel using direct operate procedure.

The scope of command selection interlocking depends on the configuration ofparameter Process command interlocking mode.

Parameter: Process command interlocking mode (RTU Parameters)

1. Interlocking per IO device / IO bus and group Selection is interlocked against other commands of same I/O bus segmentand same command group (Command groups are Object Commands,Regulation Commands and Setpoint Commands).

2. Interlocking per objectSelection is interlocked against same object only

3. Interlocking per object with command prioritySelection is interlocked against same object only, but selection can bebroken by a command originated from an originator (e.g. HCI, PLC,Integrated HMI) with higher command priority. Whereas HCIs with lowesthost numbers has highest priorities, followed by PLCs, Integrated HMIs andRTU560 webservers. Select and execute commands can break theselection.

In case a process command is rejected, because of a selection mismatch orcommand confirmation is pending, a system event SEV#242 .. SEV#260: Processcommand collision with command of X is send to the originator of the rejectedcommand. The system events contain information about the originator whichoriginates the command causes the rejection.


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SCADA Command Direction RTU560 Function Description Part 5: SCADA Functions

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3.3 Object Command Output

Object command outputs (SCO or DCO):

can be wired for one, 1.5 and two pole switching

allows additional (1 out of n)-check (command supervision)1.5 pole and two pole switching allows two step commands (Select beforeoperate SBO sequence)

allows command termination by a response indication

allows persistent output

3.3.1 Single Object Command Output

A single command has only one output relay. It can be configured pulse ON orOFF command or as persistent output.

Parameter: Command type (SCO PDP Parameters)Single object commands can be wired with one relay contact per command (1 poleconnection) or with two relay contacts per command (2 pole connection).

Single Object commands are pulse outputs whereas the pulse duration is specifiedby the parameter Command pulse length per command. Only the configureddirection is used for pulse output. The not configured direction is ignored. Onerelay is occupied within a binary output board.

Parameter: Command pulse length (SCO PDP Parameters)

Figure 3-1: Single Command definition: pulse output


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Single object commands are configurable as persistent output. In persistent modean ON command switches the relay persistent on and the OFF command switchesthe relay to off.

Figure 3-2: Single Command definition: persistent output

3.3.2 Double Object Command Output

A double command has two independent output relays:

one relay for ON direction

one relay for OFF direction

Double object commands can be wired with one relay contact per command (1pole connection) or with two relay contacts per command (2 pole connection).

Double Object commands can be pulse outputs whereas the pulse duration isspecified by the parameter Command pulse length per command. Only onechannel ON or OFF can be active at the same time. The two relays occupy twoconsecutive bits within an output board. The ON-relay is normally on the oddchannel (1, 3, 5 ) and the OFF-relay on the even channel (2, 4, 6 ).

Parameter: Command pulse length (DCO PDP Parameters)

Figure 3-3: Double Command definition: pulse output

The definition of the bit position for ON and OFF can be changed for the whole

configuration. If changed, this definition is also valid for DPI and RCO commands.



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Termination of Command Output by Response Indication

The pulse duration of an object command can be limited to the runtime of theswitching device (e.g. isolator). The run time end is recognized by the new positionindication. To prevent that the command is stopped before the new position issettled, a Command release delay time can be specified.

The use of a response indication is specified by the parameters of the Responseindicationfor each object command. The response delay time can be specified bythe parameter Command release delay time. The default is 200 ms.

Parameter: Response indication (SCO/DCO PDP Parameters)Parameter: Command release delay time (SCO/DCO PDP Parameters)

Figure 3-4: Response Indication procedure

The response indication is a SPI or DPI message. Therefore, only the endpositions (ON/OFF) can stop the command. It is not required that the reportedindication state and the command direction (ON/OFF) do match.

A new command from NCC is accepted only when the command is switched off,that means after the response delay time and the final termination of the command

with ACTTERM to NCC.


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Object Command output withou t supervision

The output board is doing the final output by switching the output relay(s). TheBinary output boards monitor and check an output by:

reading back the output bit pattern from the relay coils driver

supervision of the 24 V DC which switches the output relays

monitoring the output pulse time

indicating the command state by LEDs

Figure 3-5 shows the principle wiring for object commands in one pole technique.

In two pole technique two relays per command direction are needed and will beswitched by the binary output board (e.g. k1 and k9), see Figure 3-6. In that formobject commands and regulation step commands can be mixed within a board.

Figure 3-5: Process commands wi thout supervision (1-pole)

Process Voltage


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Figure 3-6: Process command wi thout supervision (2-pole)

The coordination of the output board is done by the PDP. The interaction is shownin Figure 3-7. If a process command is received to switch the selected outputchannel, the assigned output board is requested to do the output.

Procedure:

Check if no other output is active etc.

Switch selected output relay

Start output pulse timer

Transmit a positive acknowledge (output active) to the PDP

Switch off output relay when the pulse time has elapsed

Transmit output deactivated to PDP

The PDP monitors the output commands. If it does not receive the acknowledgeinformation within time, it will stop the output by forcing the output board to stop.The binary output board acknowledges output active will response the commandwith Activation Confirmation to NCC.

Process Voltage


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Figure 3-7: Interaction PDP command output without commandsupervision

Command output with supervision

To increase the security that only one interposing relay is switched at a time whena command is given, object commands can be expanded with the (1 out of n)-check function.

Figure 3-8 and Figure 3-9 show the principle wiring between the output board andthe additional required command supervision board.


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Figure 3-8: Object command outpu t wi th supervision (1.5-pole)


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Figure 3-9: Object command outpu t wi th supervision (2-pole)


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Figure 3-10: Interaction PDP - Command output with command supervision


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The coordination between the two output boards is done by the PDP. Theinteraction is shown in Figure 3-10. When a process command is received, theoutput relay is switched first with a pulse time which is longer than the configuredoutput pulse duration for that channel. After the output board has acknowledgedthat the output relay is switched on, the supervision board is started to check theoutput circuit and if positive to do the final output with the configured time for that

channel.The 23BA22/23 allows checking two different output circuits with different nominalresistances. But only one channel can be active at the same time (P1 or P2). If the23BA22/23 receives a request to test and switch a command on P1 or P2 thefollowing sequence is started:

Check that no other output is active etc.

Select P1 or P2 for checking

Start to measure the resistance in the switched output channel (interposingrelay)

Compare the measured resistance against the parameterized upper and

lower limits Abort all activities and transmit a negative acknowledge if the resistance is

out of limits

Switch the auxiliary relays from TEST to SWITCH position if theresistance check is O.K.

Start the output pulse by switching the GO relays which feed the processvoltage to the selected interposing relay

Start output pulse timer

Transmit a positive acknowledge (command running) to PDP

Switch off GO relay when the pulse time elapsed

Switch back to TEST position

Transmit command stopped to PDP

The PDP will then stop the output board by a stop command. The PDP part of theCPU monitors the output commands. If it does not receive the acknowledgeinformation within time, it will stop the output by forcing the supervision board toreset and the output board to stop output.

The assignment between supervision board and the output board and the upperand lower resistance limits have to be parameterized for each channel on thecommand supervision board.

Two command supervision channels CSC (P1/P2) can be defined on each

supervision board. On the 23BA20 board can be selected which commandsupervision channel monitors the board. For 1.5 pole connection, two channels canbe selected (relays 1-8 and relays 9-16) .The command supervision is valid for allSCO and DCO commands on this board.

It must be regarded that channels connected to the same route (R1 / R2) musthave the same supervision channel CSC n.

Parameter: Check circuit number (CSC General Parameters)

Low limit resistance (CSC General Parameters)

High limit resistance (CSC General Parameters)


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23BA22/23 LOCAL mode

The 23BA22/23 board has a push-button on the front panel which allows inhibitingany active output. This button is marked with LOC and a LED indicates if LOCAL isactive or not. To switch from remote to local and vice versa the push-button mustbe pressed twice within 5 seconds. The LED LOC flashes -after the push-button ispressed once- for five seconds.

As long as LOCAL mode is active, the 23BA22/23 discards any command andreturns negative acknowledgements. The position of the LOCAL/REMOTE switchis sent to the NCC with system events # 64 to #95.

If the LOC push button is pressed twice again, the 23BA22/23 switches back toremote mode and will accept and handle commands in the normal way.

3.3.3 Object command output limitations

Depending on the selected command output board, the user has to take care of thefollowing limitations:

Feature 23BA20 23BA40 23BO62 23BO61 560CIG10

1 polewithoutsupervision

Yes Yes Yes Yes Yes

2 polewithoutsupervision

Yes Yes YesYes

Yes

1.5 polewithsupervision

With23BA22/23

No With23BO63

No Onboard

2 polewithsupervision

With23BA22/23

No With23BO63

No Onboard


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3.4 Regulation Step Command Output

3.4.1 Functionality

Regulation step command output (RCO)

can be wired for one and two pole switching, and allows one and two stepcommands (select before operate sequence)

cannot be wired with command supervision

cannot be terminated by a response indication

The object command pulse length is described by the parameter PULSE LENGTH.The pulse duration for HIGHER and LOWER is the same.

Parameter: Command pulse length (RCO PDP Parameters)

Re-trigger of regulations commandsThe output pulse duration of a regulation command can be expanded if the samecommand is received within the output pulse time and can be sent to the outputboard before the time elapsed. The binary output board starts the timer again.

An output pulse can also be shortened by a new command with DEACTIVATIONflag. If a DEACTIVATION command is received, the running regulation commandis stopped immediately (Support is communication protocol dependant).

Figure 3-11: Re-trigger/stop of a regulation command

The definition of the bit position for HIGHER and LOWER can be changed for thewhole configuration. If changed, this definition is also valid for DPI and DCOcommands.


Nominal

pulse duration

Command output relay

Option

RCO

SEL

Start

RCO

ACT

Retrigger

RCO

ACT

Retrigger

RCO

ACT

Retrigger

RCO

ACT

Stop

RCO

DEACT

Pulse duration

without stop

Nominal

pulse duration

Command output relay

Option

RCO

SEL

Start

RCO

ACT

Retrigger

RCO

ACT

Retrigger

RCO

ACT

Retrigger

RCO

ACT

Stop

RCO

DEACT

Pulse duration

without stop


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3.4.2 Regulation command output limitations

Depending on the selected command output board, the user has to take care of thefollowing limitations:

Feature 23BA20 23BA40 23BO62 23BO61 560CIG10

Regulationcommand

Yes Yes Yes Yes Yes


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3.5 Setpoint Command Output

A set point command is specified by an analog or digital set point value output. Theoutput can be done with or without strobe. For a strobe output, the value is valid for

the receiving unit during the additional strobe pulse output. One or two stepcommands are possible. The set point command types are:

analogue output value (ASO)Analogue output channel on an analogue output board(current or voltage output)

digital output value (DSO)Digital output on a binary output board

3.5.1 Analogue Setpoint Command Output

The analogue set point command output (ASO) can be done in two ways, withstrobe or without strobe. The strobe output allows triggering the concerned unitwhen a new value is received. If this is not requested, the set point command canbe done without strobe.

Bipolar, Unipolar and Live Zero conversion

The analogue output value is converted to an analogue output signal by theanalogue output board. The Output signal type allows specifying unipolar outputsignals. That means, a negative ASO value is set to zero.

Output signals with live zero presentation (standard = 4.20 mA) are transformed bythe PDP. The conversion is done in the form that:

0% of the normalized ASO value becomes 20 % of the output signal range(Standard: 4 mA)

100 % of the normalized ASO value becomes 100 % of the input signalrange(Standard: 20 mA).

Figure 3-12: Live Zero Output Conversion

The configuration parameter Output signal typespecifies if the output is a bipolar, aunipolar or a live zero signal. The configuration parameter Output signal rangespecifies the hardware setting of the 23AA20 board.

Parameter: Output signal range (ASO PDP Parameters)Output signal type (ASO PDP Parameters)

100 %

20 mA (100%)4 mA (0%)

Output Value

0 %


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Scaling

The PDP converts the value of a normalized ASO. The configuration parameterConversion factor specifies the percentage of the maximum output signal that isdefined as 100 % of the normalized value.

Parameter: Conversion factor (ASO PDP Parameter)

Figure 3-13: Analogue Value Conversion ASO

-20 -15 -10 -5 5 10 15 20

Output signal

[digits]

[e.g. mA]

-100 -75 -50 -25 25 50 75 100 [%]

e.g. conv. factor = 75 %

- 100 %

Normalized ASO value

+ 100 %


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Analogue Setpoint command w ithout st robe

The analog output stays stable until a new ASO is received.

Analogue Setpoint command w ith s trobe

For analogue setpoints with strobe, the corresponding Strobe output channel(SOC) should be configured to any output channel of a binary output board. The

strobe Pulse length is configurable. The default value is 500 milliseconds. TheASO must be configured to an analogue output board.

Parameter: Pulse length (SOC PDP Parameters)

Strobe (SOC) (ASO PDP Parameters)

The PDP coordinates the output of the analogue output value and the strobe pulse.There is a delay of approx. 50 ms between the output of the analogue value andthe strobe. This delay allows the value to become stable. The analogue outputstays stable until a new ASO is received.

Figure 3-14: Set Point Command for Analogue Output


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3.5.2 Digital Setpoint Command Output

A digital setpoint output (DSO) is an output of a normalized value on a binaryoutput board. The following types are possible:

Digital Setpoint Output 8 bit (DSO8)

Digital Setpoint Output 16 bit (DSO16)

The RTU560 knows conversions for:

Binary data (BIN)

Binary coded decimals (BCD)

Gray code (GRAY)

The maximum length of a digital measured value is a word of 16 bit (= one binaryoutput board, Double word values are not supported.

Digital Setpoint value presentation

Each type is converted by the PDP.

Figure 3-15: Digital Setpoint Value presentation

1234567891011131415 1216 23BA20 Output Channel

16 bit unsigned binary data(a)

15 bit + sign binary data(b)

(d)

(c)

(e)

7 bit + sign binary data

0..9 0..9 0..9 0..90..9 0..9 0..9 0..9 4 Decade BCD unsigned

(f)

(g)

Conversion by PDP

S = Sign bit / Sign position

(i)

S

S 0..9 0..9 0..90..7 0..9 0..9 0..9

S

0..9 0..9

0..7 0..9S

S

S

8 bit unsigned binary data

4 Decade BCD signed

2 Decade BCD unsigned

2 Decade BCD signed

16 bit gray code

15 bit signed gray code

8 bit gray code

7 bit signed gray code

(h)

(j)

(k)

(l)


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Scaling and Format Conversion

A digital setpoint output is converted from a normalized value (+/- 100%) to a bitpattern output on 23BA20/23BA40 by the PDP. The PDP parameter DSO valuepresentationand Output signal

E560 FD Rel10 Part5 SCADA Functions

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