A7400-7420 Errors - Siemens SINAMICS G150 Operating Manual

Diagnosis / Faults and Alarms
Alarm value 9: DI/DO 9 (X122.8)
(r2124): 10: DI/DO 10 (X122.10)
11: DI/DO 11 (X122.11)
13: DI/DO 13 (X132.8)
14: DI/DO 14 (X132.10)
15: DI/DO 15 (X132.11)
Remedy: - Set terminal as input (p0728).
- Deselect probe (p0488, p0489).
A7400
Drive:: DC link voltage maximum controller active
Cause: DC-link voltage controller has been activated because the voltage has exceeded the upper
activation threshold (r1242).
Ramp down times are increased automatically to keep the DC link voltage (r0026) within the
permissible limit. Control deviation between set and actual speed. The output of the RFG is
therefore set to the actual speed on deactivation of the DC link voltage controller.
See also: p1240
Remedy: none
A7401
Drive: DC link voltage maximum controller deactivated
Cause: The Vdc max controller could not hold the DC Link voltage (r0026) below the limit (r1242)
and was therefore deactivated.
- Line voltage is permanently higher than specified for the power section.
- Motor is permanently in regenerative mode (driven by a load).
Remedy: - Check whether the input voltage lies inside the permissible range.
- Check whether the load cycle and load limits lie inside the permissible ranges.
A7402
Drive: Link minimum controller active
Cause: The DC-link voltage controller has been activated because the voltage has dropped below
the lower activation limit (r1246). The motor's kinetic energy is used to buffer the DC link.
This decelerates the drive.
See also: p1240
Remedy: Warning disappears when power supply returns.
F7410
Drive: Current controller output limited
Reaction: OFF2
Cause: - Motor not corrected or motor contactor open.
- No DC link voltage present.
- Motor module defective.
Remedy: - Connect motor or check motor contactor.
- Check DC link voltage (r0070).
- Check motor module.
Acknowl.: Immediate
F7411
Drive: Flux controller output limited
Reaction: OFF2
Cause: Unable to achieve specified flux setpoint, although 90 % of maximum current is specified.
- Wrong motor data.
- Motor data and motor switching mode (star/delta) do not match.
- Current limit set too low for motor.
- Motor module too small.
Remedy: - Correct motor data.
- Check switching mode of motor.
- Correct current limits (p0640, p0323).
- If necessary, use a larger motor module.
Acknowl.: Immediate
F7420
Drive: Current setpoint filter natural frequency > Shannon frequency
Reaction: NONE
10-32
11/03
SINAMICS G150
Operating Manual