ABB PSTX Series User Manual

18 Softstarters Type PSTX30...PSTX1250 User Manual short form 1SFC132082M9901
EN
Description
Faults
High current
A fault current, higher than 8 times the softstarter ratings, has
occurred. Check the circuits including the motor for any insulation
fault, phase to phase fault, or earth fault.
Phase loss
Voltage to one or more phases missing. Check that the mains are
connected and that no line contactor or breaker is open.
Heat sink overtemperature
The heat sink temperature is too high. Check the starting conditions
and the fans. Increase current limit if needed. Let the softstarter
cool down before restart.
Bad network quality
Excessive disturbances in the operational supplying network. Check
for harmonics or frequency disturbance in the supply network.
Shunt fault
The softstarter can not stop the motor due to internal short circuit.
Contact ABB sales ofce for service.
Low supply voltage
Too low control supply voltage on terminals 1 and 2. Check for volt-
age dips or interruptions.
Thyristor overload
The thyristors are overheated. Check the starting conditions and
the fans. Increase current limit if needed. Let the thyristors cool
down before restart.
Short circuit thyristor
One or several thyristors are shorted. Contact ABB sales ofce for
service.
Open circuit thyristor
One or several thyristors are not conducting. Contact ABB sales
ofce for service.
Unspecied fault
Internal fault in the softstarter. Disconnect and reconnect the supply
voltage. If fault remains, contact ABB sales ofce for service.
Invalid ID A valid softstarter ID has not been set.
Faulty connection Motor is connected in a faulty way.
Faulty usage
It is not allowed to use the functions jog, motor heating and stand
still break when the softstarter is connected inside delta.

ABB PSTX Series Specifications

General

Brand	ABB
Model	PSTX Series
Category	Controller
Language	English