Fault tracing
171
INV OVERTEMP
(4290)
Converter module temperature is excessive. Check ambient temperature. If it exceeds
40 °C, ensure that load current does not
exceed derated load capacity of drive. See
appropriate hardware manual.
Check that ambient temperature setting is
correct (parameter 95.10).
Check converter module cooling air flow and
fan operation.
Cabinet installation: Check cabinet air inlet
filters. Change when necessary. See
appropriate hardware manual.
Modules installed in cabinet by user: Check
that cooling air circulation in cabinet has been
prevented with air baffles. See module
installation instructions.
Check inside of cabinet and heatsink of
converter module for dust pick-up. Clean when
necessary.
Reset and restart after problem is solved and
let converter module cool down.
I/O COMM ERR
(7000)
02.19 FW 2 bit 06
Communication error on control board,
channel CH1
Electromagnetic interference
Check connections of fibre optic cables on
channel CH1.
Check all I/O modules (if present) connected to
channel CH1.
Check for proper earthing of equipment. Check
for highly emissive components nearby.
LINE CONV
(FF51)
Fault on line side converter Shift panel from motor side converter control
board to line side converter control board.
See line side converter manual for fault
description.
MOD BOARD T
(FF88)
Overtemperature in AINT board of inverter
module.
Check inverter fan.
Check ambient temperature.
MOD CHOKE T
(FF89)
Overtemperature in choke of liquid cooled R8i
inverter module.
Check inverter fan.
Check ambient temperature.
Check liquid cooling system.
MOTOR PHASE
(FF56)
02.19 FW 2 bit 15
(programmable
Fault Function
30.16)
One of motor phases is lost due to fault in
motor, motor cable, thermal relay (if used) or
internal fault.
Check motor and motor cable.
Check thermal relay (if used).
Check Fault Function parameters. Disable this
protection.
MOTOR STALL
(7121)
02.19 FW 2 bit 14
(programmable
Fault Function
30.10…30.12)
Motor is operating in stall region due to e.g.
excessive load or insufficient motor power.
Check motor load and drive ratings.
Check Fault Function parameters.
Fault Cause What to Do
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