ABB PSTX Series Installation And Commissioning Manual page 118

7.19 Faults
The Softstarter has a number of fault detection functions
to protect the Softstarter. Faults detection always runs as
default. The user cannot set the fault detection to off. If a
signal malfunctions in the Softstarter, the motor or in the
power network level, a fault occurs. Supervised faults can
be internal or external faults.
Internal fault:
The Softstarter has a fault. see chapter 10
Troubleshooting, and speak to ABB sales office if
necessary.
External fault:
There is a fault in the equipment that is connected to the
Softstarter. see chapter 10 Troubleshooting, and speak
to ABB sales office if necessary.
When a fault occur, the type of fault will be described
on the home screen and the red Fault LED light will
illuminate.
When a fault occurs, the unit does these basic actions:
1. The fault LED illuminates
7
2. The home screen gives the type of fault
3. The type of event is stored on the event list
4. The power supply to the motor which is connected
to the Softstarter is set to off (Direct stop).
You can set faults to have automatic reset or manual
reset. Every fault has a parameter option called
Operation, that you can set as:
• Stop-Automatic – The engine stops and resets
automatically after you correct the fault condition*.
• Stop-Manual – The engine stops and must be reset
manually after you correct the fault condition*.
• Indication – Emergency mode only, see chapter
7.20.1 Emergency mode.
* You cannot reset a fault before you correct the fault
condition.
You can set faults to an Event group by a parameter
option called Out. You can set the Event group for relay
output to control other devices in an application.
As default all parameters are set to the same Eventgroup.
You can add further actions for each fault, or change the
basic actions. If multiple faults occur they are all stored
in a sequence. Do a reset for each fault if manual reset is
selected.
118 Functions | Installation and commissioning manual | 1SFC132081M0201