Chapter 5 – Fault Tracing
5-8 ACS 501 Installation & Start-up Manual
Figure 5-3 Overcurrent Fault Flowchart
Overcurrent
trip.
Stop the drive. Disconnect ACS 501 from input power. If Auto Reset is on,
death or serious injury could result if power is not disconnected before
removing a mechanical fault.
Motor
stalled?
Disconnect
ACS 501 from
input power.
Motor
short circuit/
ground fault?
Cable
short circuit/
ground fault?
Reconnect
ACS 501
to input line power.
Restart
system.
Overcurrent
trip again?
Remove
mechanical
fault.
Restart
system.
Yes
No
Yes
Check and/or
replace motor.
Check and/or
replace cable.
Reconnect
ACS 501
to input line power.
Restart
system.
Check for
faults.
Yes
No
No
Yes
Internal fault.
Contact ABB
Technical Support.
Check for
faults.
No
Overcurrent
Code
1
2 & 3
4
265% x I
N
Exceeded
Gate Drive Fault
Interference Fault
Description
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