ABB PSR Manual page 7

Applications
Fans
Compressors
Conveyor belts
Common questions:
– How to avoid extended voltage drops due to long
starting time?
– Use an ABB softstarter equipped with current limit to
keep control of the starting current.
– How to extend the life of the driving belts?
– Our softstarters will reduce the mechanical stress during
start, thus avoiding slipping belts.
– How to ensure the operation of the fan?
– A softstarter with underload protection will detect broken
belts, making the operator immediately aware of the
problem.
Common questions:
– How to ensure a long life of the compressor?
– Using a softstarter for starting will reduce the accelerating
torque, thereby minimizing the mechanical stress.
– How to build a compact compressor unit?
– Using a compact softstarter like PSR or PSE will allow a
much more compact starting equipment than for instance
a star delta starter.
Common questions:
– How to reduce the need for service and repair of the
conveyor belt?
– A softstarter from ABB will cause minimal mechanical
stress on the conveyor belt.
– How to avoid that the conveyor belt is running in the
wrong direction?
– Use a softstarter with phase reversal protection.
– How to improve the efficiency of the conveyor belt?
– Using softstarters with high and low current warnings
allows you to load on and off the conveyor belt.
– How to ensure a successful start even after longer times
without operation?
– A softstarter with kick start function will provide sufficient
torque to be able to overcome the initial high friction from
a temporarily jammed belt.
1SFC132005C0201, rev.F | Softstarters 7