Fault tracing
170
DC UNDERVOLT
(3220)
02.19 FW 2 bit 02
Intermediate circuit DC voltage is not sufficient
due to missing mains phase, blown fuse or
rectifier bridge internal fault.
DC undervoltage trip limit is 0.6 · U
1min
, where
U
1min
is minimum value of mains voltage
range. For:
400 V and 500 V units, U
1min
is 380 V
690 V units, U
1min
is 525 V.
Actual voltage in intermediate circuit
corresponding to mains voltage trip level is:
307 VDC for 400 V and 500 V units, and
425 VDC for 690 V units.
Check mains supply and fuses.
ENCODER A<>B
(7302)
Pulse encoder phasing is wrong: Phase A is
connected to terminal of phase B and vice
versa.
Interchange connection of pulse encoder
phases A and B.
ENCODER ERR
(7301)
02.19 FW 2 bit 05
Communication fault between pulse encoder
and pulse encoder interface module and
between module and drive
Check pulse encoder and its wiring, pulse
encoder interface module and its wiring and
parameter group 50 PULSE ENCODER
settings.
GD DISABLED
(FF53)
AGPS power supply of parallel connected R8i
inverter module has been switched off during
run. X (1…12) refers to inverter module
number.
Check Prevention of Unexpected Start-up
circuit.
Replace AGPS board of R8i inverter module.
GROUND FAULT
(2330)
02.18 FW 1 bit 4
(programmable
Fault Function
30.17)
Drive has detected load unbalance typically
due to ground fault in motor or motor cable.
Check there are no power factor correction
capacitors or surge absorbers in motor cable.
Check that there is no ground fault in motor or
motor cables: measure insulation resistances
of motor and motor cable.
If no ground fault can be detected, contact your
local ABB representative.
ID RUN FAIL
(FF84)
Motor ID Run is not completed successfully. Check maximum speed (parameter 20.02). It
should be at least 80% of motor nominal speed
(parameter 99.08).
IN CHOKE TEMP
(FF81)
Excessive input choke temperature Stop drive. Let it cool down.
Check ambient temperature.
Check that fan rotates in correct direction and
air flows freely.
INT CONFIG
(5410)
Number of inverter modules is not equal to
original number of inverters.
Check status of inverters. See 02.02 INT
FAULT INFO.
Check fibre optic cables between APBU and
inverter modules.
INV DISABLED
(3200)
Optional DC switch has opened while unit was
running or start command was given.
Close DC switch.
Check AFSC-0x Fuse Switch Controller unit.
Fault Cause What to Do
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