ABB ACS 501 Installation & Start-Up Manual page 53

Chapter 5 – Fault Tracing
5-6
Fault Message
21 MOT CONT This fault is related to
components in the Motor
Control Card.
22 PAR REST Parameter restoring error.
Parameter checksum does not
match.
23 UNDER V 2 DC bus voltage does not rise
over 93% of V
seconds after connecting the
input power.
24 GND FAULT Ground Fault has been detected
in the motor or motor wiring.
Possible Cause
• Remove power, wait one
• If the problem persists, call
• Reset fault display (the
• Check all parameter settings
• Remove power, wait one
• Check supply voltage.
during five • Call ABB Technical Support.
N
• Check the motor and motor
ACS 501 Installation & Start-up Manual
Remedy
minute, then restore power.
ABB Technical Support.
Record the specific fault
code, you may be asked for
it.
display is reset allowing the
scrolling of parameters, but
the fault is not reset).
or restore the factor settings.
minute, then restore power to
check that the fault has
disappeared.
wiring for grounds faults.