Transcript Sales Opportunities VersiStart i III VersiStart i III Family VersiStart i III Range Ranges • • • 23 Models 23A ~ 1600A 7.5kW ~ 800kW Voltage Ranges • • 200 ~ 525VAC 380

Sales Opportunities
VersiStart i III
VersiStart i III Family
VersiStart i III Range
Ranges
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23 Models
23A ~ 1600A
7.5kW ~ 800kW
Voltage Ranges
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200 ~ 525VAC
380 ~ 690VAC
Protection
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IP20 VS i III-0023B ~ VS i III-0105B
IP00 VS i III-0145B ~ VS i III-1600C
Certification
VersiStart i III Highlights
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LCD Graphical Display with 8 Languages
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Extensive Metering Screens
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Performance Graph Screens
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Extensive User Friendly Menu for Programming
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Real-time Clock
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Power-through Operation
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Emergency Run and Stop
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Adjustable bus-bars for 360A+
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Serial Communication Modules – Modbus,
DeviceNet, Profibus, USB
Industry Types
Water Supply
Local government, water utilities etc
Water Treatment
Local government, waste water & sewage utilities etc
Irrigation
Food & Beverage
Slaughter houses, frozen foods, cool stores, beverage
manufacturers etc
Forestry
Saw Mills, Pulp & Paper Processors etc
Quarries & Mining
HVAC
Building Services
Petrochemical Production
Marine
Generator Set Supplies
Water Supply
Pumps
Water Treatment
Pumps
Aerators
Milliscreens
Irrigation
Pumps
Food and Beverage
Pumps
Compressors
Centrifuges
Conveyors
Fans
Forestry
Bandsaws
Slabber
Chippers
Edgers
Debarkers
Hydraulic Power Packs
Fans
Refiners
Pumps
Quarrying and Mining
Crushers
Conveyors
Screens
Fans
Pumps
HVAC & Building Services
Chiller Compressors
Escalators
Fans
Pumps
Petrochemical Production
Centrifuges
Compressors
Fans
Pumps
Marine
Bow Thrusters
Winches
Compressors
Fans
Pumps
Generator Set Supplies
Large Machines run off Limited Supplies
Soft Start Benefits for Pumps
Gentle Acceleration
Minimises pressure surges during start thus
preventing mechanical damage to pipes, valves,
transducers, etc.
Related VS i III Functions: Current Limit, Current Ramp, Torque Control,
AAC
AAC Setup: Constant Acceleration, Early Deceleration
Minimum Start Current
Reduces electrical disturbance on the supply. This is
very important where large pumps are installed in
residential areas.
Limits demand on the supply. This can reduce
reticulation costs when supplying power to large
pumps installed in remote areas, e.g. farm irrigation
pumps.
Related VS i III Functions: Current Limit ,Current Ramp
Soft Start Benefits for Pumps
Soft Stop
AAC‘s Adaptive Deceleration enables elected profiles
fitting to the application to extend and control the
pump stopping eliminating the damaging effects of
fluid hammer often associated with uncontrolled pump
stopping.
This will reduce the need for regular
maintenance/repair and extend the life of pumps,
valves, pipes, transducers, etc.
New installation costs can be reduced because the
system design need not allow for repetitive high
pressure surges. For example, pressure surge tanks
and motorised valves become unneccessary and the
specification of pipes, valves, transducers, etc, can be
reduced.
Related VS i III Function: AAC’s Adaptive deceleration Control
Soft Start Benefits for Pumps
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
In the petrochemical industry this feature can be vital
for safety. If excessive motor temperature goes
undetected, a hazardous situation exists.
Related VS i III Function: Motor Thermal Capacity
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Pumps
Phase Sequence Protection
The sequence of the incoming three phase supply is
monitored. If a change is detected, the VS i III will
prevent a start.
This is important in applications where damage can
occur if the pump runs in reverse direction.
Related VS i III Function: Phase Sequence Protection
Undercurrent Protection
Motor current is monitored and if the level detected is
less than that set for undercurrent protection, the VS i
III will trip.
This can be used to detect blocked pipes or lack of
fluid thus preventing pump damage.
Related VS i III Function: Undercurrent Trip point, Undercurrent Protection
Delay
Soft Start Benefits for Pumps
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor in the event of
a jammed or stalled pump.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected
is higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
This will prevent damage to the motor, pump and
couplings caused by abnormally large solids jamming
the pump, eg tree debris in a flood pump or large
rocks in a slurry pump.
Related VS i III Function: Instantaneous Overload Trip Point
Soft Start Benefits for Pumps
Current Flags
The low current and high current flag set points can
give indication that there is a mechanical problem
within the system. eg a low current flag could indicate
a blocked pipe and a high current flag could indicate a
broken pipe.
Related VS i III Function: Low & High Current Flag, Relay Output A, B or C
Pump Load Monitoring
0-20mA / 4-20mA analogue output can be used to
monitor the pump loading.
Related VS i III Function: Analog Output A
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings. This is useful in
emergency situations, such as allowing the sprinkler
system to remain operational.
Related VS i III Function: Input A
Soft Start Benefits for Pumps
Power-Through Operation
2-phase start and stop operation can still be performed
in the event where one thyristor fails. Thus minimizing
downtime for the user.
Related VS i III Function: Shorted SCR Action
Automatic Alarm Resetting
This feature can be very useful in unmanned pump
stations because it can eliminate unneccessary site
visits in the event of a trip.
Related VS i III Function: Auto-Reset – Trip Types, Auto Reset, Number of
Resets, Group Delays
Automatic Start-Stop timers
The application can be set to start and stop by time of
day or delay
Related VS i III Function: Start/Stop Timers section
Soft Start Benefits for Pumps
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Soft Start Benefits for Compressor Chillers
Gentle Acceleration
Minimises torque transients during start thus
preventing mechanical damage to couplings, belts,
bearings and the compressor.
Related VS i III Functions: Current Limit, Current Ramp, Setup: Constant
Current
Minimum Start Current
Reduces electrical disturbance on the supply.
Related VS i III Functions: Current Limit, Current Ramp
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Compressor Chillers
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Motor Overload Protection – Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Related VS i III Function: Motor Thermal Capacity
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Compressor Chillers
Phase Sequence Protection
The sequence of the incoming three phase supply
is monitored. If a change is detected, the VS i III
will prevent a start.
This is important in applications where damage can
occur if the compressor runs in reverse direction.
Related VS i III Function: Phase Sequence Protection
Undercurrent Protection
Motor current is monitored and if the level detected
is less than that set for undercurrent protection,
the VS i III will trip.
This can be used to detect broken couplings and
belts.
Related VS i III Function: Undercurrent Trip point, Undercurrent
Protection Delay
Soft Start Benefits for Compressor Chillers
Excess Start Time
If a successful start is not achieved within the
excess start time setting, the VS i III will trip.
This will prevent damage to the motor in the event
of a jammed or stalled compressor.
It can also detect failure of the Off Loader device.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected
is higher than that set for the Instantaneous
overload protection, the VS i III will immediately
trip.
This will prevent damage to the motor, compressor
and couplings caused by a lock up situation. eg
liquid ammonia entering the compressor.
Related VS i III Function: Instantaneous Overload Trip Point
Soft Start Benefits for Compressor Chillers
High Current and Motor Temperature Flags
The high current flag can give warning of
compressor overload and allow load shedding
before the VS i III trips.
The motor temperature flag can give warning of an
approaching motor overload and allow load
shedding before the VS i III trips.
Related VS i III Function: High Current Flag, Relay Output A – Function
Assignment
Compressor Load Monitoring
0-20mA / 4-20mA analogue output can be used to
monitor the compressor load.
Related VS i III Function: Analog Output A
Soft Start Benefits for Compressor Chillers
Dual Parameter Settings
Primary and secondary motor settings can be
selected. This feature can be used for dual speed
motor dahlander type control which is often used to
optimise compressor performance.
Related VS i III Function: Primary and Secondary Motor Settings
Restart Delay
This feature allows a time delay between the end of
one stop and the next start. This can be used to
avoid short cycling thus increasing motor,
compressor and coupling life.
Related VS i III Function: Restart Delay
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Soft Start Benefits for Fans
Gentle Acceleration
Minimises torque transients during start thus
preventing mechanical damage to couplings, belts
and bearings.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply.
Related VS i III Functions: Current Limit, Current Ramp
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings. This is can be crucial
in emergencies to allow fans to continue ventilation.
Related VS i III Function: Input A
Soft Start Benefits for Fans
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails.
Thus minimizing downtime for the user.
Related LPRA Function: Shorted SCR Action
Motor Overload Protection - Dual Thermal
Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Related VS i III Function: Motor Thermal Capacity
Soft Start Benefits for Fans
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control
equipment to be installed.
Related VS i III Function: Thermistor Input Terminals
Phase Sequence Protection
The sequence of the incoming three phase supply is
monitored. If a change is detected, the VS i III will
prevent a start.
This is important in applications where damage may
occur if the fan runs in reverse direction.
Related VS i III Function: Phase Sequence Protection
Soft Start Benefits for Fans
Undercurrent Protection
Motor current is monitored and if the level detected
is less than that set for undercurrent protection, the
VS i III will trip.
This can be used to detect broken couplings and
belts.
This protection can be disabled
Related VS i III Function: Undercurrent, Undercurrent Delay.
Note: This protection can be disabled
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor in the event
of a jammed or stalled fan.
Can give early indication of bearing failure.
Related VS i III Function: Excess Start Time
Soft Start Benefits for Fans
Undercurrent Flag
The low current flag can give warning of a
mechanical problem within the system, e.g. it could
indicate a clogged fan filter.
Related VS i III Function: Undercurrent , Undercurrent Delay, Relay
Output – Function Assignment
Fan Load Monitoring
Via an optional remote operator a analogue output
can be used to monitor the fan loading. This allows
the VS i III to be directly interfaced with a building
management system without the need for extra
equipment.
Related VS i III Function: 0-20mA / 4-20mA Programmable Output
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Soft Start Benefits for Conveyors
Gentle Acceleration
Minimises torque transients and extends starting
time for gentle run up of the conveyor.
Reduces the risk of product damage caused by jerky
starts.
Provides optimimum conveyor starting regardless of
product loading, i.e. loaded/unloaded.
Prevents mechanical damage to couplings, drums,
belts and bearings.
Prevents conveyor belt slap during start.
Reduces stress on counter balances and weights.
Related VS i III Functions: Current Limit, Current Ramp, Setup: Constant
Current
Soft Start Benefits for Conveyors
Minimum start current
Reduces electrical disturbance on the supply.
Related VS i III Functions: Current Limit, Current Ramp
Soft Stop
Extends conveyor stopping time thus reducing the
risk of product damage caused by sudden stops.
Related VS i III Functions: Soft Stop Ramp Time
Soft Start Benefits for Conveyors
Motor Overload Protection - Dual Thermal
Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
This is ideal for a situation where a restart is
required after an emergency stop or when large
loads are dumped on the conveyor.
Related VS i III Function: Motor Thermal Capacity
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control
equipment to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Conveyors
Phase Sequence Protection
The sequence of the incoming three phase supply is
monitored. If a change is detected, the VS i III will
prevent a start.
This is important in applications where damage can
occur if the conveyor runs in reverse direction.
Related VS i III Function: Phase Sequence Protection
Undercurrent Protection
Motor current is monitored and if the level detected
is less than that set for undercurrent protection, the
VS i III will trip.
This can be used to detect broken couplings and
conveyor belts.
Related VS i III Function: Undercurrent Trip point, Undercurrent
Protection Delay
Soft Start Benefits for Conveyors
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor caused by a
jammed or excessively overloaded conveyor during
start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected
is higher than that set for the instantaneous
overload protection, the VS i III will immediately
trip.
This will prevent damage to the motor, conveyor and
couplings caused by severe product overload or a
stalled conveyor .
Related VS i III Function: Instantaneous Overload Trip Point and Delay
Soft Start Benefits for Conveyors
Dual Parameter Settings
Primary and secondary motor settings can be
selected. This feature can be used where the primary
settings are selected for normal conveyor operation
and the secondary settings are selected for
emergency situations to start the conveyor fully
loaded.
Related VS i III Function: Primary and Secondary Motor Settings
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Conveyors
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails.
Thus minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Crushers
Gentle Acceleration
Minimises torque transients for gentle crusher
starting thus extending coupling, belt and bearing
life.
Related VS i III Functions: Current Limit, Current Ramp. Setup: Constant
Current
Minimum Start Current
Reduces electrical disturbance on the supply.
Limits the demand on the supply. This is important in
remote sites where generator sets are used for
reticulation.
Related VS i III Functions: Current Limit, Current Ramp,
Soft Start Benefits for Crushers
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Maximises product throughput by allowing the motor
to operate at its upper thermal limit.
Provides reliable motor protection while allowing the
crusher to ride through temporary product overload
situations.
Related VS i III Function: Motor Thermal Capacity
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Crushers
Phase Sequence Protection
The sequence of the incoming three phase supply is
monitored. If a change is detected, the VS i III will
prevent a start.
This is important in applications where damage can
occur if the crusher runs in reverse direction.
Related VS i III Function: Phase Sequence Protection
Undercurrent Protection
Motor current is monitored and if the level detected
is less than that set for undercurrent protection, the
VS i III will trip.
This can be used to detect broken couplings and
crusher belts.
Related VS i III Function: Undercurrent Trip point, Undercurrent Delay
Soft Start Benefits for Crushers
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor caused by a
jammed or excessively overloaded crusher during
start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected
is higher than that set for the instantaneous
overload protection, the VS i III will immediately
trip.
This will prevent damage to the motor, crusher and
couplings caused by severe product overload or a
stalled crusher while running, eg, oversized rock
jammed in crusher rollers.
Related VS i III Function: Instantaneous Overcurrent Trip Point and Delay
Soft Start Benefits for Crushers
Dual Parameter Settings
Primary and secondary motor settings can be
selected. This feature can be used where the primary
settings are selected for normal crusher operation
and the secondary settings are selected for
emergency situations to start the crusher fully
loaded.
Related VS i III Function: Primary and Secondary Motor Settings
Crusher Load Monitoring and Control
The 0-20mA / 4-20mA analogue output signal can be
used to monitor crusher loading and can be
interfaced with the infeed conveyor control system to
maximise product throughput.
Related VS i III Function: Analog Output Function, scale and adjustments
Soft Start Benefits for Crushers
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails.
Thus minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Centrifuges
Gentle Acceleration
Centrifuges are typically high inertia machines
started with star/delta starters. Using this start
method can take up to 15 minutes to reach full
speed. The VS i III will shorten the start time thus
reducing thermal stress on the motor and supply
cables. It will also eliminate torque transients
experienced with star/delta starting and reduce
mechanical stress on gearboxes, couplings, belts and
bearings.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Soft Start Benefits for Centrifuges
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity. Traditional centrifuge
starting methods require the motor protection to be
bypassed during start because of the long run up
time. No motor protection is present at this critical
stage. The VS i III Motor Overload Protection - Dual
Thermal Model will give optimum motor protection
during starting and running of the centrifuge.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Centrifuges
Phase Sequence Protection
The sequence of the incoming three phase supply is
monitored. If a change is detected, the VS i III will
prevent a start.
This is important in applications where damage can
occur if the centrfuge runs in reverse direction.
Related VS i III Function: Phase Sequence Protection
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor caused by a
seized gearbox, couplings, belts and bearings during
start up.
Related VS i III Function: Excess Start Time
Soft Start Benefits for Centrifuges
Dual Parameter Settings
Centrifuges can take a long time to stop. Primary
and secondary motor settings can be used to control
a soft braking system installed to reduce the
stopping time. This will reduce the process time and
increase productivity.
Related VS i III Function: Primary and Secondary Motor Settings
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Centrifuges
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails.
Thus minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Bandsaws Headrigs
Gentle Acceleration
Minimises torque transients for a gentle run up of the
bandsaw.
Reduces mechanical stress on couplings, belts and saw
blades thus lowering maintenance costs.
Slow acceleration allows for saw blades to be easily
aligned while the bandsaw is starting. This eliminates
the need to jog the bandsaw which places torque
shocks on the saw blades.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote timbermill sites where supply is
limited.
Related VS i III Functions: Current Limit , Current Ramp
Soft Start Benefits for Bandsaws Headrigs
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity. Bandsaws experience
regular overloads as part of their normal operation.
Motor thermal model will provide optimum protection
without nusiance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Bandsaws Headrigs
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and saw blades
caused by a jammed or excessively overloaded
bandsaw during start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
Lock up situations are common in bandsaw
applications. Instantaneous overload protection will
reduce the risk of sawblade damage due to torque
shocks experienced under these conditions
Related VS i III Function: Instantaneous Overcurrent Trip Point and Delay
Soft Start Benefits for Bandsaws Headrigs
Dual Parameter Settings
Primary and secondary motor settings can be used for
the control of a soft braking system.
Saw blades have a long run down time and need
changing several times a day. By using the soft
braking method run down time is reduced thus
reducing process time and increasing productivity.
Related VS i III Function: Primary and Secondary Motor Settings
Bandsaw Load Monitoring and Control
The 0-20mA / 4-20mA analogue output signal can be
used to monitor bandsaw loading and can be
interfaced with the infeed conveyor control system to
maximise product throughput.
Related VS i III Function: Analog Output Function, scale and adjustments
Soft Start Benefits for Bandsaws Headrigs
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Generator Sets
Optimum Starting Performance
The VS i III will optimise the starting performance of
any motor supplied by a generator set.
Start current is minimised reducing the kVA demand
on the alternator and the kW demand on the
primemover.
Load is gradually applied to the alternator. This will
assist in maintaining a constant voltage and frequency
during start providing a more overall stable system.
New motors may be used on existing generator sets
already operating at near full capacity.
Possibility of reduced generator set sizing on new
installations where motors are a signicant part of the
load.
Related VS i III Functions: Current Limit, Current Ramp, Setup: Constant
Current
Soft Start Benefits for Generator Sets
Frequency Protection
The VS i III monitors the supply frequency and can be
set to trip if it falls outside the protection tolerance.
This is useful on generator set applications for
detecting under and over frequency situations. The
allowable frequency tolerance is greater during start
enabling the generator set to ride through the motor
starting conditions.
Related VS i III Function: Frequency Protection: Check, Variation and Delay
Phase Loss Protection
Motor line currents are monitored and if a
programmed imbalance is detected the VS i III will
trip. This is useful for detecting a problem in the
alternator section of the generator set.
Related VS i III Function: Current Imbalance Sensitivity and Delay
Soft Start Benefits for Generator Sets
Undercurrent Protection
Motor current is monitored and if the level detected is
less than that set for the undercurrent protection, the
VS i III will trip.
This can be used to detect extended periods of
unloaded generator set operation which can cause
engine cylinders to glaze.
Related VS i III Function: Undercurrent Trip point, Undercurrent Delay
Soft Start Benefits for Generator Sets
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
Severe overload situations can cause the generator
set to become unstable and run below its safe
operating speed. This can be avoided using the
instantaneous overload protection function.
Related VS i III Function: Instantaneous Overcurrent Trip Point and Delay
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Generator Sets
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Chippers
Gentle Acceleration
Minimises torque transients for a gentle run up of the
chipper. This reduces mechanical stress on couplings,
belts and knife blades thus lowering maintenance
costs.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote sites where supply is limited.
Related VS i III Functions: Current Limit, Current Ramp.
Soft Start Benefits for Chippers
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity. Chippers experience
regular overloads as part of their normal operation.
Motor thermal model will provide optimum protection
without nuisance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Chippers
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and knife
blades caused by a jammed or excessively overloaded
chipper during start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
Lock up situations are common in chipper applications.
Instantaneous overload protection will reduce the risk
of knifeblade damage due to torque shocks
experienced under these conditions
Related VS i III Function: Instantaneous Overcurrent Trip Point and Delay
Soft Start Benefits for Chippers
Dual Parameter Settings
Primary and secondary motor settings can be used for
the control of a soft braking system.
By using the soft braking method run down time is
reduced. This will reduce process and maintenance
time and increase productivity.
Related VS i III Function: Primary and Secondary Motor Settings
Chipper Load Monitoring and Control
Via an optional remote operator a 4-20mA analogue
output signal can be used to monitor chipper loading
and can be interfaced with the infeed conveyor control
system to maximise product throughput.
Related VS i III Function: Analog Output Function, scale and adjustments
Soft Start Benefits for Chippers
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Aerators
Gentle Acceleration
Increases mechanical stability during start up to
reduce risk of tipping.
Minimises torque transients during start thus
preventing mechanical damage to couplings and
bearings.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply.
Related VS i III Functions: Current Limit, Current Ramp
Soft Start Benefits for Aerators
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Aerators
Phase Sequence Protection
The sequence of the incoming three phase supply is
monitored. If a change is detected, the VS i III will
prevent a start.
This is important in applications where damage can
occur if the aerator runs in reverse direction.
Related VS i III Function: Phase Sequence Protection
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Aerators
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Milliscreens
Gentle Acceleration
Milliscreens commonly use small motors with
gearboxes to produce high output torque. The VS i III
will reduce mechanical stress on gearboxes, couplings,
belts and bearings.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply.
Related VS i III Functions: Current Limit, Current Ramp
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Related VS i III Function: Motor Overload Protection
Soft Start Benefits for Milliscreens
Phase Sequence Protection
The sequence of the incoming three phase supply is
monitored. If a change is detected, the VS i III will
prevent a start.
This is important as damage can occur to the gearbox
and milliscreen if run in reverse direction.
Related VS i III Function: Phase Sequence Protection
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor caused by a
seized gearbox, couplings, belts and bearings during
start up.
Related VS i III Function: Excess Start Time
Soft Start Benefits for Milliscreens
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Slabbers
Gentle Acceleration
Minimises torque transients for a gentle run up of the
slabber. This reduces mechanical stress on couplings
and saw blades extending equipment life and lowering
maintenance costs.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote sites where supply is limited.
Related VS i III Functions: Current Limit, Current Ramp
Soft Start Benefits for Slabbers
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity. Slabbers experience
regular overloads as part of their normal operation.
Motor thermal model will provide optimum protection
without nuisance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Slabbers
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and saw blades
caused by a jammed or excessively overloaded
slabber during start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
Lock up situations are common in slabber applications.
Instantaneous overload protection will reduce the risk
of sawblade damage due to torque shocks experienced
under these conditions
Related VS i III Function: Instantaneous Overcurrent Trip Point and delay
Soft Start Benefits for Slabbers
Dual Parameter Settings
Slabbers have a long run down time and require
regular sawblade maintenance. Primary and secondary
motor settings can be used for the control of a soft
braking system.
The soft braking method will reduce run down time.
This will reduce process and maintenance time and
increase productivity.
Related VS i III Function: Primary and Secondary Motor Settings
Slabber Load Monitoring and Control
Via an optional remote operator 4-20mA analogue
output signal can be used to monitor slabber loading
and can be interfaced with the infeed conveyor control
system to maximise product throughput.
Related VS i III Function: Analog Output Function, scale and adjustments
Soft Start Benefits for Slabbers
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Edgers Arbors
Gentle Acceleration
Minimises torque transients for a gentle run up of the
edger.
Reduces mechanical stress on couplings and saw
blades extending equipment life and lowering
maintenance costs.
Prevents sawblade de-alignment.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote sites where supply is limited.
Related VS i III Functions: Current Limit, Current Ramp
Soft Start Benefits for Edgers Arbors
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity. Edgers experience
regular overloads as part of their normal operation.
Motor thermal model will provide optimum protection
without nuisance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Edgers Arbors
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and saw blades
caused by a jammed or excessively overloaded edger
during start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
Jamming is common in edger applications.
Instantaneous overload protection will reduce the risk
of sawblade damage and de-alignment under these
conditions.
Related VS i III Function: Instantaneous Overcurrent Trip Point and delay
Soft Start Benefits for Edgers Arbors
Edger Load Monitoring and Control
Via an optionalremote operator a 4-20mA analogue
output signal can be used to monitor edger loading
and can be interfaced with the infeed conveyor control
system to maximise product throughput.
Related VS i III Function: Analog Output Function, scale and adjustments
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Edgers Arbors
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Debarkers
Gentle Acceleration
Minimises torque transients for a gentle run up of the
debarker.
Reduces mechanical stress on couplings and saw
blades extending equipment life and lowering
maintenance costs.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote sites where supply is limited.
Related VS i III Functions: Current Limit, Current Ramp
Soft Start Benefits for Debarkers
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Motor thermal model will provide optimum protection
without nusiance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Debarkers
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor, ring gear and
saw blades caused by a jammed or excessively
overloaded debarker during start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
In the case of a jammed log, instantaneous overload
protection will reduce the risk of ring gear and saw
blade damage.
Related VS i III Function: Instantaneous Overcurrent Trip Point and delay
Soft Start Benefits for Debarkers
Debarker Load Monitoring and Control
The 0-20mA / 4-20mA analogue output signal can be
used to monitor debarker loading and can be
interfaced with the infeed conveyor control system to
maximise product throughput.
Related VS i III Function: Analog Output Function, scale and adjustments
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Soft Start Benefits for Debarkers
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Hydraulic Power Packs
Gentle Acceleration
Hydraulic Power Packs are commonly used to power
conveyor systems which feed logs through process
machinery. Torque transients are minimised for a
gentle run up.
Reduces mechanical stress on fluid couplings and
other moving parts extending equipment life and
lowering maintenance costs.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote sites where supply is limited.
Related VS i III Functions: Current Limit, Current Ramp
Soft Start Benefits for Hydraulic Power Packs
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Motor thermal model will provide optimum protection
without nuisance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Hydraulic Power Packs
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and other
moving equipment caused by a jammed log in the
process line during start up.
Related VS i III Function: Excess Start Time
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Hydraulic Power Packs
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Refiners
Gentle Acceleration
Minimises torque transients for a gentle run up of the
refiner. This reduces mechanical stress on couplings,
belts and knife blades thus lowering maintenance
costs.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote sites where supply is limited.
Related VS i III Functions: Current Limit, Current Ramp.
Soft Start Benefits for Refiners
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity. Refiners experience
regular overloads as part of their normal operation.
Motor thermal model will provide optimum protection
without nusiance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Refiners
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and knife
blades caused by a jammed or excessively overloaded
refiner during start up.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
Lock up situations are common in refiner applications.
Instantaneous overload protection will reduce the risk
of knifeblade damage due to torque shocks
experienced under these conditions.
Related VS i III Function: Instantaneous Overcurrent Trip Point and Delay
Soft Start Benefits for Refiners
Dual Parameter Settings
Primary and secondary motor settings can be used for
the control of a soft braking system.
By using the soft braking method run down time is
reduced. This will reduce process and maintenance
time and increase productivity.
Related VS i III Function: Primary and Secondary Motor Settings
Refiner Load Monitoring and Control
The 0-20mA / 4-20mA analogue output signal can be
used to monitor refiner loading and can be interfaced
with the infeed conveyor control system to maximise
product throughput.
Related VS i III Function: Analog Output Function, scale and adjustments
Soft Start Benefits for Refiners
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Winches
Gentle Acceleration
Minimises torque transients for gentle winch starting
thus extending coupling, winch line and bearing life.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply.
Limits the demand on the supply. This is important in
marine situations where generator sets are used for
reticulation.
Related VS i III Functions: Current Limit, Current Ramp.
Soft Start Benefits for Winches
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Maximises productivity by allowing the motor to
operate at its upper thermal limit.
Provides reliable motor protection while allowing the
winch to ride through temporary overload situations.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Winches
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor caused by a
jammed or excessively overloaded winch during start
up.
Related VS i III Function Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
This will prevent damage to the motor, winch line and
couplings caused by severe overload or a stalled winch
line.
Related VS i III Function: Instantaneous Overcurrent Trip Point and Delay
Soft Start Benefits for Winches
Dual Parameter Settings
Winches are generally controlled in a forward and
reverse mode of operation. Primary and secondary
motor settings can be used to control the different
winch directions.
Related VS i III Function: Primary and Secondary Motor Settings
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Winches
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Screens
Gentle Acceleration
Reduces mechanical stress on couplings bearings and
other moving parts extending equipment life and
lowering maintenance costs.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Reduces electrical disturbance on the supply by
minimising the required start current. This is
important at remote sites where supply is limited.
Related VS i III Functions: Current Limit, Current Ramp
Soft Start Benefits for Screens
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Motor thermal model will provide optimum protection
without nusiance tripping.
Maximum product throughput can be achieved without
the risk of motor failure.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Screens
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and other
moving equipment caused by jamming during start
up.
Related VS i III Function: Excess Start Time
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Screens
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Escalators
Gentle Acceleration
Minimises torque transients and extends starting time
for gentle run up of the escalator.
Reduces the risk of personal injury caused by jerky
starts.
Prevents mechanical damage to couplings, belts and
bearings.
Extends equipment life and reduces maintenance
costs.
Reduces stress on counter balances and weights.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum start current
Reduces electrical disturbance on the supply. This can
be important when escalators are to be started on
building emergency supplies.
Related VS i III Functions: CurrentLimit , Current Ramp
Soft Start Benefits for Escalators
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
This is ideal for a situation where a restart is required
after an emergency stop.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Related VS i III Function: Thermistor Input Terminals
Soft Start Benefits for Escalators
Undercurrent Protection
Motor current is monitored and if the level detected is
less than that set for undercurrent protection, the VS i
III will trip.
This can be used to detect broken couplings and
belts.
Related VS i III Function: Undercurrent Trip point and Delay
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
This will prevent damage to the motor, couplings and
belts caused by a stalled situation.
Related VS i III Function: Instantaneous Overcurrent Trip Point and delay
Soft Start Benefits for Escalators
Dual Parameter Settings
Primary and secondary motor settings can be
selected. This feature can be used for the forward and
reverse running of the escalator. This could be critrical
in emergency situations.
Related VS i III Function: Primary and Secondary Motor Settings
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Escalators
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action
Soft Start Benefits for Bow Thrusters
Gentle Acceleration
Reduces mechanical stress by minimising torque
transients during start.
Prevents mechanical damage to bearings, couplings
and impellors.
Increases equipment life and reduces maintenance
costs.
Related VS i III Functions: Current Limit, Current Ramp, AAC.
AAC Setup: Constant Acceleration
Minimum Start Current
Electrically driven bow thrusters are often the largest
single load on a vessel. By reducing the motor
starting current to a minimum the demand on the
generator set supply is reduced.
Refer to the Generator Set section.
Related VS i III Functions: Current Limit, Current Ramp
Soft Start Benefits for Bow Thrusters
Soft Stop
Extends bow thruster stopping time thus reducing the
risk of impellors running in reverse direction due to
back pressure.
Related VS i III Function: AAC.
AAC Setup: Constant Deceleration
Under Frequency Protection
Electrical supply onboard a vessel is normally provided
by a generator set. This protection can stabilise the
electrical supply system during the staring of a bow
thruster. This will avoid unneccessary nusiance
tripping.
Related VS i III Function: Frequency Protection Check, Variation and Delay
Soft Start Benefits for Bow Thrusters
Motor Overload Protection - Dual Thermal Model
The VS i III mathematically calculates the motor
windings and body temperature allowing for safe use
of the motors thermal capacity.
Maximises performance by allowing the motor to
operate at its upper thermal limit.
Provides reliable motor protection while allowing the
bow thruster to ride through temporary overload
situations.
Related VS i III Function: Motor Overload Protection
Motor Thermistor Protection
Motor thermistors can be connected directly into the
VS i III thermistor input.
This eliminates the need for special control equipment
to be installed.
Reduces the fire hazard risk by preventing motor
winding burn out.
Related VS i III Function: Thermistor Input Terminal
Soft Start Benefits for Bow Thrusters
Excess Start Time
If a successful start is not achieved within the excess
start time setting, the VS i III will trip.
This will prevent damage to the motor and couplings
in the event of a jammed or stalled impellor during
starting.
Related VS i III Function: Excess Start Time
Instantaneous Overload Protection
Motor current is monitored and if the level detected is
higher than that set for the instantaneous overload
protection, the VS i III will immediately trip.
This will prevent damage to the motor and couplings
caused by large objects or broken impellor blades
jamming the impellor.
Related VS i III Function: Instantaneous Overcurrent Trip Point and delay
Soft Start Benefits for Bow Thrusters
Dual Parameter Settings
Primary and secondary motor settings can be
selected. This feature can be used for the forward and
reverse running of the bow thruster.
Related VS i III Function: Primary and Secondary Motor Settings
Miscellaneous Features
Old Star/Delta starters can be simply replaced using
the 6 Wire feature.
Related VS i III Function: Motor Connection
Emergency Run
The soft starter starts/continues to run until stopped,
ignoring all trips and warnings.
Related VS i III Function: Input A
Soft Start Benefits for Bow Thrusters
Power-Through Operation
2-phase start and stop operation can still be
performed in the event where one thyristor fails. Thus
minimizing downtime for the user.
Related VS i III Function: Shorted SCR Action