ABB ACS800 Series - Page 181

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