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10.1 General
This chapter is a guide that can be used in case problems
would occur wit
h the softstarter or the application.
CAUTION
Hazardous voltage: Can cause death or serious
injury. Turn off and lock out all power that
supply this device before you start work on the
equipment.
CAUTION
Make sure that the softstarter is de-energized
before performing maintenance.
Do not open the softstarter or touch any live parts
when the main and supply voltage is connected.
ABB personell have to follow the
ABB CISE 15.4
instructions
The softstarter normally indicates a fault with LED Fault,
and the display shows which type of fault that has
occurred.
When a protection is activated it will be indicated with
LED Protection and the display shows what type of
protection which is active.
When a warning occurs, the type of warning will be shown
in the display.
Issues like i.e. humming sounds which are not displayed
by the softstarter can also be found in this chapter.
10.2 Troubleshooting
Table 1
Troubleshooting
Status
Possible cause
Solution
Motor humming / starts without given
start signal.
By-pass relay closed, due to
inaccurate handling.
(PSTX30...170 only).
•
Switch off operational voltage, control supply
voltage and remove USB cable from the computer if
connected. Switch on voltage in correct succession.
1. Control supply voltage on terminals
1 and 2. See
chapter 5.1.2 Control supply and
control circuit
.
2. Wait 4 seconds, and then switch
on operational voltage on terminals
L1, L2 and L3.
•
If same fault remains, contact your
ABB Sales Office..
By-pass contactor/relay stuck in
closed position.
•
Contact your ABB Sales Office.
Shorted thyristor.
•
Contact your ABB Sales Office.
Bad motor sound during start.
The motor connection is not
correct
.
•
Check and correct the wiring. Connect the control
supply voltage according to the circuit diagram. See
chapter 11 Wiring diagrams.
Incorrect ramp time for start.
•
Try different ramp times (some adjustments can be
necessary for best result).
See chapter 7 Functions.
10
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
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