General Problems And Faults - ABB PSE 18 Installation And Commissioning Manual

Status
Motor humming/starts without given start
signal.
Bad motor sound during start and opera-
tion.
Bad motor sound during stop.
Motor does not start when giving start
command using hardwire inputs.

10.5 General problems and faults

Possible cause
By-pass relay closed, due to abnormal
handling. (PSE18...PSE170 only).
By-pass contactor/relay stuck in closed
position.
Shorted thyristor.
The motor connection is not correct. (Must
be connected In Line).
The motor connection is not correct. (Must
be connected In Line).
Incorrect ramp time for start.
Incorrect Initial/End Voltage.
Incorrect current limit.
The motor is too small.
(current is out of measuring range).
Incorrect ramp time for stop.
Incorrect Initial/End Voltage.
Start and stop command given at the
same time.
Control wiring not correct.
Start and stop command given at the
same time.
Softstarters Type PSE18...PSE370 Installation and commissioning manual 1SFC132057M0201
Solution
• Switch off operational voltage and
control supply voltage. Switch on volt-
age in correct succession.
1. Control supply voltage on terminals
1 and 2. See chapter 5.2.4.
2. Wait 4 seconds, and then switching
on operational voltage on terminals
L1, L2 and L3. See chapter 5.2.3.
• If same fault remains, contact your
ABB Sales Office.
• Check and replace relay or contactor.
• If same fault remains, contact your
ABB Sales Office.
• Check and replace thyristor. Contact
your ABB Sales Office.
• Check and correct the wiring. Con-
nect the control supply voltage
according to a circuit diagram. See
Chapter 5 and Chapter 11.
Connecting Inside Delta not allowed.
PSE
• Check and correct the wiring. Con-
nect the control supply voltage
according to a circuit diagram. See
Chapter 5 and Chapter 11.
Connecting Inside Delta not allowed.
PSE
• Try different ramp times (some adjust-
ments can be necessary for best
result). See chapter 7.5.2.
• Try different settings for the parameter
Initial /End Voltage. See chapter 7.5.4,
or contact your ABB Sales Office.
• Try different settings for the parameter
Current Limit. See chapter 7.5.5, or
contact your ABB Sales Office.
• Check that the softstarter corre-
sponds to the motor size.
• Try different ramp times for stop (some
adjustments can be necessary for
best result). See chapter 7.5.3.
• Try different settings for the parameter
Initial /End Voltage. See chapter 7.5.4,
or contact your ABB Sales Office.
• Check that start and stop command
is not given at the same time.
• Check connection for start and stop.
See chapter 5.2.4.3.
• Check that start and stop command
is not given at the same time.
Chapter 10 87