GEFRAN-SIEI ARTDrive Vector V2 400Vac Series, Instruction Manual

Page: 355 / 387

ARTDrive V2 series - Instruction Manual Chapter 8 Appendix • 355
Failure in the IGBT module on power section.
Fast overload current duty cycle too high.
Motor OT
Overtemperature of the motor (indicated via thermistor on terminals 78/79)
Cable between thermistor connection on motor and terminals 78 and 79
interrupted.
Overheating of motor:
-
Load cycle too heavy
- Ambient temperature at site of motor too high
- Motor has an external fan: fan failed
- Motor does not have an external fan: too large a load at low speed. The
cooling effect of the fan on the motor shaft is too low for this load cycle.
Change cycle or fit external fan.
- Motor used above its frequency specification, causing extra magnetic losses.
Overvoltage
Overvoltage in intermediate circuit due to energy feedback from the motor
Lengthen deceleration ramp. If not possible, use a braking unit to reduce the
energy feedback.
Regulat S OT
Temperature of the Regulation board of the Drive too High.
Ambient temperature too high.
Speed fbk loss
Failure in the speed feedback sensor signals.
Encoder not connected, or incorrectly connected or not supplied:
Check encoder signals as per section 5.7. If the indicated value does not change
or random values are shown, check the power supply and the cabling of the
encoder.
Parameter and input setting on the regulation card is not consistent with encoder
type.
Undervoltage
Mains voltage parameter incorrectly set. Remedy: set parameter correctly and
then acknowledge (*) the fault.
The incoming voltage to the power section of the device is too low due to:
-
too low an AC input voltage or long voltage dips
- poor cable connections (e.g. terminals on contactor, choke, filter, etc, not
properly secured). Check connections.
(* ) By default all alarms are auto-acknowledged after a 180 sec timeout. To
acknowledge a fault press “Alarm”
[Shift]
+
[Up arrow]
, scroll to the desired
Alarm list entry and
[Enter]
.