ABB ACS800 Series Firmware Manual page 181

Fault Cause
COMM MODULE Cyclical communication between drive and
master is lost.
(7510)
02.19 FW 2 bit 12
(programmable
Fault Function
30.18, 30.19)
CTRL B TEMP Control board temperature is above 88 °C.
(4110)
02.19 FW 2 bit 07
CURR MEAS Current transformer failure in output current
measurement circuit
(2211)
CUR UNBAL xx Drive has detected excessive output current
unbalance in inverter unit of several parallel
(2330)
connected inverter modules. This can be
02.19 FW 1 bit 04
caused by external fault (earth fault, motor,
(programmable
motor cabling, etc.) or internal fault (damaged
Fault Function
inverter component). xx (1...12) refers to
30.17)
inverter module number.
DC HIGH RUSH Drive supply voltage is excessive. When
supply voltage is over 124% of unit voltage
(FF80)
rating (415, 500 or 690 V), motor speed rushes
to trip level (40% of nominal speed).
DC OVERVOLT Excessive intermediate circuit DC voltage.
DC overvoltage trip limit is 1.3 · U
(3210)
U
1max
02.19 FW 1 bit 02
range. For:
400 V units, U
500 V units, U
Actual voltage in intermediate circuit
corresponding to mains voltage trip level is:
728 VDC for 400 V units and
877 VDC for 500 V units.
is maximum value of mains voltage
is 415 V
1max
is 500 V.
1max
What to Do
Check status of fieldbus communication. See
chapter Fieldbus
fieldbus adapter manual.
Check parameter settings:
- group 51 FIELDBUS DATA
adapter), or
- group 52 STANDARD MODBUS
Standard Modbus Link).
Check Fault Function parameters.
Check cable connections.
Check if master can communicate.
Check ambient conditions.
Check air flow.
Check main and additional cooling fans.
Check current transformer connections to Main
Circuit Interface Board, INT.
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.
Check supply voltage level, drive rated voltage
and allowed voltage range of drive.
Check that overvoltage controller is on
where (parameter 20.05).
1max,
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.
control, or appropriate
(for fieldbus
(for
Fault tracing
169