Page 7 - Catalog Softstarters PSR PSE PSTX

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Controlling conveyor belts Controlling compressors

Avoid overheating with overload protection Full control of current with current limit
Too much material on a conveyor belt may cause overload Many applications are sensitive to high or variable starting
and overheating, reducing the reliability and longevity of the currents. The feature current limit makes it possible to start
motor. ABB’s overload protection feature shuts down the the motor securely even in a weaker network, improving the
motor in case of overload, avoiding overheating. availability of the equipment and system. Reducing the current
means reducing the stress on cables, network and motor.
Increased flexibility with jog with slow speed
After stopping the belt, it may be necessary to run the motor Full voltage start for scroll compressors
at low speed to correctly position the belt before resuming For scroll compressors it is often necessary to start the
operation. The jog with slow speed feature makes it possible motor in a very short time while still maintaining a low starting
to position the belt manually, in both forward and reverse current. Full voltage start is a start mode that gives you
direction, before re-starting the belt. This improves process almost a direct start but without the current peak.
efficiency and eliminates the need for a variable speed drive, a
considerably more expensive solution for solving the problem. Phase reversal protection for problem-free commissioning
A motor rotating in the wrong direction, which may occur due
Continuous operation with limp mode to connecting the phases wrongly, may cause severe damage
Shorted thyristor is a possible problem for a softstarter, putting to a compressor. Using phase reversal protection, the motor
it out of operation until the component has been replaced. won‘t start in the wrong direction, avoiding costly compressor
Using limp mode, the softstarter will continue to work with one downtime and repairs.
thyristor shorted, avoiding costly unplanned stoppages.

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