Faults And Alarms - Siemens SINAMICS G150 Operating Manual

Diagnosis / Faults and Alarms
Acknowl.: Immediate
F7800
Drive: No power section present
Reaction: NONE
Cause: The power section parameters cannot be read or no parameters are stored in the power
section.
See also: r0200
Remedy: Connect data line to power section and restart control unit (POWER ON).
Acknowl.: Immediate
F7801
Drive: Power section Overcurrent
Reaction: OFF2
Cause: Permissible motor limit current exceeded.
- Effective current limit set too low.
- Current controller not set correctly.
- Motor decelerated with stall torque factor set too high.
- V/f mode: Start-up ramp set too low or load to high.
- V/f mode: Short-circuit in motor cable or ground fault
- V/f mode: Motor current does not match motor module current.
Remedy: - Check current limits (p0323, p0640).
- Check current controller (p1715, p1717).
- Reduce stall torque correction factor (p0326).
- Reduce start-up ramp (p1318) or reduce load.
- Check motor and motor cable for short-circuits and ground fault.
- Check motor module and motor combination.
Acknowl.: Immediate
F7802
Drive: Infeed or power section not ready
Reaction: OFF2
Cause: Infeed or drive signals not ready after internal ON command.
- Monitoring time too short.
- DC link voltage not present.
- Associated infeed or drive of component signaling the fault is defective.
Remedy: - Increase monitoring time (p0857).
- Provide DC link voltage. Check the DC-link busbar. Enable infeed module.
- Replace associated infeed or drive of component signaling the fault.
Acknowl.: Immediate
A7805
Drive: Power section I2T overload
Cause: Warning threshold for I2t overload (p0294) exceeded.
The reaction is set in p0290 is initiated.
See also: p0290
Remedy: - Reduce permanent load.
- Adapt duty cycle.
- Check assignment of rated currents for motor and motor modules.
F7810
Drive: Power section EEPROM without rated data
Reaction: NONE
Cause: No rated data are stored in the power section EEPROM.
See also: p0205, r0206, r0207, r0208, r0209
Remedy: Replace power section or inform Siemens Customer Service.
Acknowl.: Immediate
F7815
Drive: Power section has been changed
Reaction: NONE
Cause: Code number of the current power sections does not match the stored number.
See also: r0200, p0201
Fault value Number of the incorrect parameter.
(r0949):
10-34
11/03
SINAMICS G150
Operating Manual