3. 489 OPERATION OVERVIEW

3-1

3

3.1.1.

489 FACEPLATE

.

Figure 3-1 489 FACEPLATE

3

489 OPERATION3.1

OVERVIEW

808754E3.CDR

489 IN SERVICE BREAKER OPEN R1 TRIP

R2 AUXILIARY

R3 AUXILIARY

R4 AUXILIARY

R5 ALARM

R6 SERVICE

SETPOINT ACCESS BREAKER CLOSED

COMPUTER RS232 HOT STATOR

MESSAGE

VT FAILURE

BREAKER FAILURE

489 Generator Management Relay

PROGRAM PORT SETPOINT 7 8 9

4 5 6

1 2 3

. 0 HELP

MESSAGE

VALUE

ACTUAL

ESCAPE

ENTER

TM

RESET

NEXT

RESETPOSSIBLE

COMPUTER RS485

AUXILIARY RS485

ALT. SETPOINTS

489 STATUS GENERATOR STATUS OUTPUT RELAYS

NEG. SEQUENCE

GROUND

LOSS OF FIELD

gg

OVERVIEW 3. 489 OPERATION

3-2

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3.1.2.

DISPLAY

Figure 3-2 489 DISPLAY

All messages are displayed on a 40 character vacuum fluorescent display to make them visible under poor lighting conditions. Messagesare displayed in plain English and do not require the aid of an instruction manual for deciphering. While the keypad and display are notactively being used, the display will default to user defined status messages. Any trip or alarm will automatically override the defaultmessages and appear on the display.

LAMP TEST: Press Help button for 2 seconds to initiate lamp test.

3.1.3.

LED INDICATORS

489 STATUS GENERATOR STATUS OUTPUT RELAYS

R1 TRIP

R2 AUXILIARY

R3 AUXILIARY

R4 AUXILIARY

R5 ALARM

R6 SERVICE

BREAKER OPEN

BREAKER CLOSED

HOT STATOR

NEG. SEQUENCE

GROUND

LOSS OF FIELD

VT FAILURE

BREAKER FAILURE

489 IN SERVICE

SETPOINT ACCESS

COMPUTER RS232

COMPUTER RS485

AUXILIARY RS485

ALT. SETPOINTS

RESETPOSSIBLE

MESSAGE

Figure 3-3 489 LED INDICATORS

There are three groups of LED indicators. They are 489 Status, Generator Status, and Output Relays.

489 STATUS LED INDICATORS

489 IN SERVICE: Control power is applied & all monitored I/O and internal systems are OK & the 489 has been programmed & the489 is in protection mode, not simulation mode. When in simulation or testing mode, the LED indicator will flash.

SETPOINT ACCESS: Access jumper is installed and passcode protection has been satisfied; setpoints may be altered and stored.

COMPUTER RS232: Flashes when there is any activity on the comm. port. Remains on solid if incoming data is valid.

COMPUTER RS485: Flashes when there is any activity on the comm. port. Remains on solid if incoming data is valid and intendedfor the slave address programmed in the relay.

AUXILIARY RS485: Flashes when there is any activity on the comm. port. Remains on solid if incoming data is valid and intendedfor the slave address programmed in the relay.

ALT. SETPOINTS: Flashes when the alternate setpoint group is being edited, but the primary setpoint group is active. Remains onsolid if the alternate setpoint group is active. The alternate setpoint group feature is enabled as one of the assignable digital inputs.The alternate setpoints group can be selected manually through the DUAL SETPOINTS digital input page.

RESET POSSIBLE: A trip or latched alarm may be reset. Pressing the [RESET] key will clear said trip or alarm.

MESSAGE: Flashes when a trip or alarm occurs. Pressing the next key will scroll through diagnostic messages. Remains solidwhen setpoint and actual value messages are being viewed. Pressing the [NEXT] key will return the display to the defaultmessages.

3. 489 OPERATION OVERVIEW

3-3

3

GENERATOR STATUS LED INDICATORS

BREAKER OPEN: Uses the breaker status input signal to indicate that the breaker is open and the generator is offline.

BREAKER CLOSED: Uses the breaker status input signal to indicate that the breaker is closed and the generator is online.

HOT STATOR: Indicates that the generator stator is above normal temperature when one of the stator RTD alarm or trip elements ispicked up or the thermal capacity alarm element is picked up.

NEG. SEQUENCE: Indicates that the negative sequence current alarm or trip element is picked up.

GROUND: Indicates that at least one of the ground overcurrent, neutral overvoltage (fundamental), or neutral undervoltage (3rdharmonic) alarm/trip elements is picked up.

LOSS OF FIELD: Indicates that at least one of the reactive power (kvar) or field-breaker discrepancy alarm/trip elements is pickedup.

VT FAILURE: Indicates that the VT fuse failure alarm is picked up.

BREAKER FAILURE: Indicates that the breaker failure or trip coil monitor alarm is picked up.

OUTPUT RELAY LED INDICATORS

R1 TRIP: R1 Trip relay has operated (energized).

R2 AUXILIARY: R2 Auxiliary relay has operated (energized).

R3 AUXILIARY: R3 Auxiliary relay has operated (energized).

R4 AUXILIARY: R4 Auxiliary relay has operated (energized).

R5 ALARM: R5 Alarm relay has operated (energized).

R6 SERVICE: R6 Service relay has operated (de-energized, R6 is failsafe, normally energized).

3.1.4.

RS232 PROGRAM PORT

Figure 3-4 RS232 PROGRAM PORT

This port is intended for connection to a portable PC. Setpoint files may be created at anylocation and downloaded through this port using the 489PC program. Local interrogation ofSetpoints and Actual Values is also possible. New firmware may be downloaded to the 489 flashmemory through this port. Upgrading of the relay firmware does not require a hardware EPROMchange.

OVERVIEW 3. 489 OPERATION

3-4

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3.1.5.

KEYPAD

Figure 3-5 489 KEYPAD

The 489 messages are organized into pages under the mainheadings, Setpoints and Actual Values. The [SETPOINT] key isused to navigate through the headers of pages of programmableparameters. The [ACTUAL] key is used to navigate through theheaders of pages of measured parameters.

Each page is broken down further into logical subgroups ofmessages. The [MESSAGE] up and down keys may be used tonavigate through the subgroups.

The [ENTER] key is dual purpose. It is used to enter thesubgroups or store altered setpoint values.

The [ESCAPE] key is also dual purpose. It may be used to exit thesubgroups or to return an altered setpoint to its original valuebefore it has been stored.

The [VALUE] up and down key is used to scroll through variables in the setpoint programming mode. It will increment and decrementnumerical setpoint values. Alternatively, these values may be entered with the numeric keypad.

The [HELP] key may be pressed at any time for context sensitive help messages.

3.1.6.

ENTERING ALPHANUMERIC TEXT

In order to allow the 489 to be customized for specific applications, there are several places where text messages may be programmed.One example is the MESSAGE SCRATCHPAD. To enter alphanumeric text messages, the following procedure should be followed:

Example: to enter the text, "Generator #1"

press [.] to enter text edit mode,

press the [VALUE!"] or [VALUE #] key until 'G' appears, press [.] to advance the cursor to the next position,

repeat step 2 for the remaining characters: e,n,e,r,a,t,o,r, ,#,1

press [ENTER] to store

3.1.7.

ENTERING +/- SIGNS

The 489 does not have a + or - key. Negative numbers may be entered in one of two manners. First, immediately pressing the [VALUEUP] or [VALUE DOWN] key will cause the setpoint to scroll through its range including any negative numbers. Alternately, once a setpointmessage is entered, after pressing at least one numeric key, pressing the [VALUE UP] or [VALUE DOWN] key will cause the sign tochange if applicable.

3. 489 OPERATION OVERVIEW

3-5

3

3.1.8.

SETPOINT ENTRY

In order to store any setpoints from the front panel keypad, terminals C1 and C2 (access terminals) must be shorted. (A key switch maybe used for security). There is also a Setpoint Passcode feature that may be enabled to restrict access to setpoints from the keypad andcommunication ports. The passcode must be entered to allow the changing of setpoint values. A passcode of 0 effectively turns off thepasscode feature and only the access jumper is required for changing setpoints. If no setpoint changes are made for 30 minutes, accessto setpoint values will be restricted until the passcode is entered again. To prevent setpoint access before the 30 minutes expires, theunit may be turned off and back on, the access jumper may be removed, or the SETPOINT ACCESS: Permitted setpoint may bechanged to Restricted. The passcode for the front panel keypad cannot be entered until terminals C1 and C2 (access terminals) areshorted. When setpoint access is allowed for the front panel keypad, the 'SETPOINT ACCESS' indicator on the front of the 489 unit willbe lit.

The following procedure may be used to access and alter any setpoint message. This specific example will refer to entering a validpasscode in order to allow access to setpoints if the passcode was '489'.

1.The 489 programming is broken down into pages by logical groups. Press [SETPOINTS] to cycle through the setpoint pages until thedesired page appears on the screen. Press [MESSAGE t] to enter a page.

SETPOINTS S1 489 SETUP

2.Each page is broken further into subgroups. Press [MESSAGE #] and [MESSAGE "] to cycle through subgroups until the desiredsubgroup appears on the screen. Press [ENTER] to enter a subgroup.

PASSCODE [ENTER] for more

3.Each sub-group has one or more associated setpoint messages. Press [MESSAGE #] and [MESSAGE "] to cycle through setpointmessages until the desired setpoint message appears on the screen.

ENTER PASSCODE FORACCESS:

4.The majority of setpoint messages may be may be altered in a simple fashion by pressing [VALUE "] and [VALUE #] until the desiredvalue appears and pressing [ENTER]. Setpoints that are strictly numeric may also be entered by pressing the numeric keys (includingdecimals) and pressing [ENTER]. If a setpoint is entered that is out of range, the original setpoint value will reappear. If a setpoint isentered that is out of step, an adjusted value will be stored (e.g. 101 for a setpoint that steps 95,100,105 will store as 100). If a mistakeis made entering the new value, pressing [ESCAPE] will cause the value to revert to its original value. Text editing is a special casedescribed in detail in 3.1.6 ENTERING ALPHANUMERIC TEXT. Each time a new setpoint is successfully stored, a message will flashon the display stating 'NEW SETPOINT HAS BEEN STORED'.

ENTER PASSCODE FORACCESS: $$$

Press [4], [8], [9],[ENTER]FLASH:

NEW SETPOINT HASBEEN STORED

RETURNS:SETPOINT ACCESS:PERMITTED

5.Press [ESCAPE] to exit a subgroup.

PASSCODE [ENTER] for more

6.Pressing [ESCAPE] numerous times will always bring the cursor to the top of the page.

SETPOINTS S1 489 SETUP