WEG CFW-09 User Manual page 230

FAULT
E70 Power-on
Internal DC Supply Manual Reset (key
Undervoltage (6) Auto-reset
DIx
Serial
Fieldbus
E71
Watchdog error
for the PLC board
RESET
Phase loss at the R or S input
) Auxiliary circuit fuse blown (only valid for 500-690 V and 660-690 V
models - refer to figures 3.7 f) and g))
When the PLC board stops communicating with the CFW-09 for more
than 200 ms
Table 7.1 (cont.) - Faults and possible causes
Notes:
(1) E03 Fault can occur only with:
- 220-230 V Models with rated current equal or higher than 45 A;
- 380-480 V Models with rated current equal or higher than 30 A;
- 500-600 V Models with rated current equal or higher than 22 A;
- 500-690 V Models;
- 660-690 V Models;
- P214 set to 1.
(2) In case of E04 Fault due to inverter overtemperature, allow the inverter
to cool before trying to reset it. The E04 fault code can also indicate a
failure in the pre-charge circuit. But this is valid only for:
- 220-230 V Models with rated current equal or higher than 70 A;
- 380-480 V Models with rated current equal or higher than 86 A.
- 500-690 V Models with rated current equal or higher than 107 A;
- 660-690 V Models with rated current equal or higher than 1000 A.
The failure in the pre-charge circuit means that the pre-charge contactor
sizes up to 130 A/220-230 V, 142 A/380-480 V and 79 A/500-600 V) or
pre-charge thyristor (sizes above 130 A/220-230 V, 142 A/380-480 V,
500-690 V and 660-690 V) is not closed, thus overheating the pre-
charge resistors.
(3) For:
- 220-230 V Models with rated current equal or higher than 16 A;
- 380-480 V Models with rated current equal or higher than 13 A, and
equal or lower than 142 A;
- 500-600 V Models with rated current equal or higher than 12 A, and
equal or smaller than 79 A;
E04 Fault can also be caused by internal airflow overtemperature.
In this case, check the electronics blower.
(4) When E32 is displayed due to motor overtemperature, please allow the
motor to cool down before restarting the inverter.
(5) When an incompatible parameter is programmed, a Fault Message –
E24 - will be displayed and the LCD display will show a Help Message
by indicating the Cause and how to correct the fault status.
(6) Only for models 107 A to 472 A/500-690 V and 100 A to 428 A/660-690 V.
(7) Long motor cables (longer than 100 m (330 ft)) can cause excessive
capacitance to ground. This can cause nuisance E11 ground fault trips
immediately after the inverter has been enabled.
CHAPTER 7 - DIAGNOSTICS AND TROUBLESHOOTING
POSSIBLE CAUSES
231