LV Compact Soft starter Familiarisation Presentation - SSUK
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Transcript of LV Compact Soft starter Familiarisation Presentation - SSUK
LV-AS Soft StarterProduct Introduction and Familiarisation
Overview
• 18 A ~ 200 A (7.5 ~ 110 kW @400 VAC)
• Soft start/stop + essential motor and
system protection
• Compact and cost-effective
• Easy to configure
Current Ratings
• Current rating
– 18 A ~ 200 A
– 7.5 ~ 220 kW @ 400 VAC
AC53b 4.0-6:354
AC53b 4.0-6:594
0018A
0034A
0042A
0048A
0060A
0075A
0085A
0100A
0140A
0170A
0200A
Models
Supply Voltage Options
Maximum Voltage Rating
• Mains voltage:
V4 = 200~440 VAC
V6 = 200~575 VAC
LV-DS-140-V4-C1
All LV-AS models are available
in two control voltage
configurations.
LV-AS -140-V4-C1
Control Supply Voltage
C1 = 110-240 VAC or 380-440 VAC
C2 = 24 VAC / VDC (eg PLC control)
Control Voltage Options
Standard Approvals
• CE: IEC 60947-4-2
• C Tick
• RoHS: Compliant with EU Directive
2002/95/ECCCC
Environmental
• IP20: - 18 ~ 100 A
- 140 ~ 200 A (when installed
with optional finger guards)
• IP00:
- 140 ~ 200 A
FEATURES AND BENEFITS
Key Selling Points
• Easy and economic to install
• Soft start/stop plus motor/system
protection
• Fast and easy to configure
Economic to Install
• Compact design minimises panel space
• Integrated bypass
• Relay outputs to assist system integration
Motor Control and Protection
• Offers the most popular soft start and soft
stop methods.
• Essential motor and system protection –
no need for dedicated protection
equipment, no need to pay for
unnecessary features.
Balanced Vector Control
• The affordability of two phase control, with
operating characteristics closer to
three phase control.
K1M
4/T2
1/L1
3/L2
5/L3
2/T1
6/T3
3 PHASE
SUPPLY TO MOTOR
Interface
• Easy to use setting dials
• Status feedback
• Trip codes
ECONOMIC TO INSTALL
Compact Physical Design
• Small footprint to minimise panel space requirement.
• Din Rail Mount up to 60A
Three frame sizes in total 18~60A 75~100A 140~200A
Built-in Bypass
• Built-in bypass (≤200 A) reduces heat
dissipation, eliminating costs of external
fans or bypass contactors.
Relay Outputs
• Fixed Output Relay (13-14)
– designed to control a line contactor
– relay is closed while the soft starter is starting,
running or stopping the motor
Relay Outputs
• Programmable Output Relay (23-24)
• Is designed to provide a N/O contact which reports the soft starter
status , it can be configured to indicate a trip or run (operating in
bypass) .
• Trip Output
– operates when the soft starter trips
– use to operate a shunt trip of an upstream Circuit Breaker or
signal the trip status to an automation system
• Run Output
– operates on completion of the start ramp
– use to operate a contactor for power factor correction capacitors
or signal the run status to an automation system
Electrical Schematic
Soft starter
installed with a
system protection
circuit breaker
complete with a
shunt trip device
Installation
USER-FRIENDLY INTERFACE
Simple Interface
Ready Run
Off No control power Motor not running
On Ready Motor running at full
speed
Flash Tripped Motor starting or
stopping
Simple Interface
• Easy access to configuration
dials on front of unit.
• Fast and easy to configure –
8 settings
• Status feedback LEDs
Adjustments
• Eight adjustments can be made on the LV-AS soft starters:
– Current Limit
– Current Ramp
– Stop Ramp Time
– Motor FLC
– Motor Trip Class
– Excess Start Time
– Phase Sequence Protection
– Auxiliary Relay Function
LV-AS Setup
• Motor FLC –
– All motor protections are based on this
setting.
– The minimum “Motor FLC” setting is 50%
of the LV-AS nameplate rating. Range
50-100%
Example – LV-AS-018 18A
If the motor FLC on the motor nameplate = 15A
The motor FLC (% soft starter FLC) = Motor
FLC ÷ LV-AS FLC
15A FLC ÷ 18A LV-AS FLC = .83 or 83%
setting
Constant Current
• Ideal where start current must be kept
below a particular level.
• Current is passed at the selected level
until the motor has accelerated.
Initial current
Current limit
Full voltage current
1
2
3
• Current Limit – (%FLC) Factory setting
350%. It provides the maximum start current
from 250 – 475% FLC covering all types of
general applications.
• 60% of motor applications are for centrifugal
pumps.
• These have quadratic load characteristics
measured as TN2 (torque is proportional to
speed squared)
LV-AS Setup
Current Ramp• Current rises from a specified starting level to a
maximum limit, over an extended period of time.
• Useful for applications where:
– the load can vary between starts
– the load breaks away easily, but starting time
needs to be extended
– the electricity supply is limited (eg generator
sets)
Current Ramp
4
Initial current
Start ramp time
Current limit
Full voltage current
1
2
3
• Current Ramp – (% FLC/Ramp Time)
Factory setting = Off
• The LV-AS offers current ramp soft starting.
During a current ramp soft start , the LV-AS
raises the current to an initial level, then
increases the current to the current limit , over a
user defined period (up to 15 seconds)
LV-AS Setup
Stop Methods
• Soft starters help eliminate the damaging
effects of fluid hammer.
Stop Method Performance Effect
Coast to stop Natural load run down
Timed voltage ramp Extended run down time
Timed Voltage Ramp
• Reduces voltage to the motor gradually over a
defined time.
• Load may continue to run after the stop ramp is
complete.
• Useful for applications where the stop time
needs to be extended, or to avoid transients on
generator set supplies.
Timed Voltage Ramp
Stop time1
• Soft Stop – Factory setting – No soft stop
• The LV-AS offers a timed voltage ramp soft stop.
The soft starter reduces its output voltage over a
specified period (0 to 20 Seconds) , adding
inertia to the load and allowing the motor to slow
down gradually
• Coast to Stop
• A setting of 0 seconds removes voltage
immediately allowing the motor to coast to
stop
LV-AS Setup
• Motor Trip Class – Class 10 general setting
• Excess Start Time – Factory setting = 10
( used in case the motor stalls or a characteristic
has changed)
• Added backup – even when the excess start time
is set to off it automatically defaults to 120 seconds
• Phase Sequence/Aux Relay Set
• (Example Can tell a PLC if the LV-AS trips)
• Any rotary switch settings adjusted during run
will only take effect on the next start.
LV-AS Setup
ESSENTIAL PROTECTION
Diagnostic Trip Codes• X1 Power Circuit Fault –Check mains supply – shorted SCRs
• X2 Excess Start Time – Check load, increase current limit or adjust setting
• X3 Motor Overload – Allow motor to cool, reset & restart. 105%
• X4 Motor Thermistor – Check motor ventilation and connection B4&B5.
• X5 Phase Imbalance- Check line current L1,L2 & L3
• X6 Supply Frequency –Trip points <40Hz and >72Hz , loss of 3 phases
• X7 Phase Sequence – check phase rotation & rotary pot setting
• X8 Communication Failure – Network – between interface and network
• X9 Communication Failure – Starter – between starter and interface
• X10 Bypass Relay Overload – Check application during run
Motor/Starter Protections
• Motor Overload (thermal model)
• Excess Start Time
• Bypass Relay Overload
- bypass relay temperature
- 600% FLC
• Motor Thermistor (built-in thermistor input)
System Protections
• Power Circuit Fault (mains supply, motor circuit,
starter SCRs)
• Phase Imbalance
• Supply Frequency (<40Hz and >72Hz)
• Phase Sequence
• Communication Failure (between
communication module and starter or network)
OPTIONS
Communication Options
• Plug-in communication modules:
– USB
– Modbus
– DeviceNet
– Profibus
– ModbusTCP
– EthernetIP
– Profinet
Remote Operator
• Operational control (start, stop, reset)
• Operating feedback (status, current and
temperature)
• Maximum cable distance 100 m
Software Tools
• WinStart
– Sales Engineer software
(not for end users)
– Selects the right starter for
the application
• WinMaster
– Control, monitor and
program starters remotely
BALANCED VECTOR
CONTROL
Balanced
Vector Control
Typical two phase waveforms Three phase
starting waveform
Balanced Vector Control
• Two phase control with the waveform
symmetry of three phase control.
• A superior control algorithm that minimises
the imbalance between the controlled and
uncontrolled phases.
• Balanced vector control gives:
– more uniform motor acceleration torque
– more evenly balanced phase currents
– lower noise & vibrations
Balanced Vector Control
• Compared with other two phase starters:
– More starts per hour
– Heavier duty loads
– Larger motors
Balanced Vector Control