ABB ACS 800 Series, Firmware Manual

Page: 290 / 340

Fault tracing
290
DC OVERVOLT
(3210)
3.05 FW 1 bit 2
Excessive intermediate circuit DC voltage.
DC overvoltage trip limit is 1.3 ·
U
1max,
where
U
1max
is maximum value of mains voltage
range. For 400 V units, U
1max
is 415 V. For
500 V units, U
1max
is 500 V. Actual voltage in
intermediate circuit corresponding to mains
voltage trip level is 728 V DC for 400 V units
and 877 V DC for 500 V units.
Check that overvoltage controller is on
(parameter
20.05 ).
Check mains for static or transient overvoltage.
Check brake chopper and resistor (if used).
Check deceleration time.
Use coast-to-stop function (if applicable).
Retrofit frequency converter with brake
chopper and brake resistor.
DC UNDERVOLT
(3220)
3.06 FW 2 bit 2
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. For 690 V units, U
1min
is 525 V. Actual
voltage in intermediate circuit corresponding to
mains voltage trip level is 307 V DC for 400 V
and 500 V units, and 425 V DC for 690 V units.
Check mains supply and fuses.
EARTH FAULT
(2330)
3.05 FW 1 bit 4
(programmable
Fault Function
30.17 )
Drive has detected load unbalance typically
due to earth 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 earth fault in motor or
motor cables:
- measure insulation resistances of motor and
motor cable.
If no earth fault can be detected, contact your
local ABB representative.
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)
3.06 FW 2 bit 5
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 ENCODER MODULE
settings.
EXTERNAL FLT
(9000)
3.06 FW 2 bit 8
(programmable
Fault Function
30.03 )
Fault in external device. (This information is
configured through one of programmable
digital inputs.) Check external devices for faults.
Check parameter
30.03 EXTERNAL FAULT.
FAN OVERTEMP
(FF83) Excessive temperature of drive output filter fan.
Supervision is in use in step-up drives. Stop drive. Let it cool down.
Check ambient temperature.
Check fan rotates in correct direction and air
flows freely.
FORCED TRIP
(FF8F) Generic Drive Communication Profile trip
command See appropriate communication module
manual.
FAULT CAUSE WHAT TO DO