110
DIAGNOSTICS AND TROUBLESHOOTING
This chapter assists the user to identify and correct possible faults that
can occur during the CFW-08 operation. Also instructions about required
periodical inspections and cleaning procedures are also provided.
When a fault is detected, the inverter is disabled and the fault code is
displayed on the readout in EXX form, where XX is the actual fault code.
To restart the inverter after a fault has occurred, the inverter must be
reset. The reset can be made as follows:
disconnecting and reapplying the AC power (power-on reset);
by pressing the key (manual reset);
automatic reset through P206 (auto-reset);
via digital input: DI3 (P265 = 10) or DI4 (P266 = 10).
The table below defines each fault code, explains how to reset the fault
and shows the possible causes for each fault code.
NOTE!
The fault E22, E23, E25, E26, E27 and E28 are related to the serial
communication and are described in Item 8.18.5.3.
7.1 FAULTS AND POSSIBLE
CAUSES
FAULT RESET
(1)
POSSIBLE CAUSES
E00 Power-on Short-circuit between two motor phases.
Output Manual (key ) Short-circuit between ground and one of more output phases.
Overcurrent Auto-reset Motor cable capacitance to ground too high, causing peak
(between phases DI current at the output (see note on next page)
or between phase Inertia of the load too high, or acceleration ramp
and ground) too short.
P169 set too high.
Undue set of P136 and/or P137, when in
V/F control (P202=0 or 1).
Undue set of P178 and/or P409 when in
vector control (P202=2).
IGBT transistor module is short-circuited
E01 Power supply voltage too high, causing a DC link
DC Link voltage higher than the allowed value:
Overvoltage Ud>410V - 200-240V models
Ud>820V - 380- 480V models
Load inertia too high or deceleration ramp too short.
Setting of P151 too high.
Load inertia too high and acceleration ramp too short
(vector control - P202=2)
E02 Power supply voltage too low, causing a DC link
DC Link voltage higher than the allowed value (read the value
Undervoltage in parameter P004):
Ud<200V - 200V - 240V models
Ud<360V - 380V - 480V models
CHAPTER 7
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