BENSHAW RSi-030-SG-4B, Service Manual

Page: 89 / 116

Pub.# 890046-10-00
Dec. 2015
Section 4, Page
7
of
32
Fault Display:
Over Curr-2
Auto Resettable:
No
Description:
Over Curr-2 ~ instantaneous at ~300% drive rated current (standard duty rating)
Check Fault History:
At parameter AFN-01 (most recent fault), hit the program button, then up
arrow to view data captured at time of fault (Hz, Volts, Amps, Status). AFN-02 through AFN-05
are previous faults.
Fault Causes Solutions
Over Current ‐ 2
Instantly
(on start
command)
Output Short Circuit ‐ motor
or cables.
With motor leads disconnected from drive,
Ohm check phase ‐ phase and phase ‐ ground.
Meggar test including motor leads.
Output Short Circuit ‐ IGBT's With motor leads disconnected, restart drive.
If drive still trips on OC ‐ 2, drive IGBT short.
See Power Device checks.
Long motor lead length.
Distance between drive and
motor is too long.
Add output reactor or long lead filter
(dV/dT).
Multiple motors connected
to output of drive.
Add output reactor or long lead filter
(dV/dT).
Motor leads run in parallel
with power leads, or in same
conduit.
Separate power and motor leads.
Power factor capacitors or
other surge filters
connected to output of drive
or at motor.
Remove capacitors or filters from output of
drive.
Control wiring ‐ Noise is
shield connection.
Remove shield connection at drive I/O
terminal strip.
Voltage Boost too high Decrease boost percentage (AFN ‐ 67, 68)
Motor cables laying in high
moisture environment.
Relocate cables.