4 Faults and alarms
4.2 List of faults and alarms
SINAMICS G120 CU250S-2 Control Units
1084
List Manual, 09/2017, A5E33842890
A07402 (N)
Drive: DC link voltage minimum controller active
Message class:
Application/technological function faulted (17)
Reaction:
NONE
Acknowledge:
NONE
Cause:
The DC link voltage controller has been activated as the lower switch-in threshold has been undershot (r1246,
r1286).
The kinetic energy of the motor is used to buffer the DC link. The drive is therefore braked.
See also: r0056 (Status word, closed-loop control), p1240 (Vdc controller configuration (vector control)), p1280 (Vdc
controller configuration (U/f))
Remedy:
The alarm disappears when power supply returns.
F07404
Drive: DC link voltage monitoring Vdc_max
Message class:
DC link overvoltage (4)
Reaction:
OFF2 (NONE, OFF1, OFF3)
Acknowledge:
IMMEDIATELY
Cause:
The monitoring of the DC link voltage p1284 has responded (only U/f control).
Remedy:
- check the line supply voltage.
- check the braking module.
- adapt the device supply voltage (p0210).
- adapt the DC link voltage monitoring (p1284).
F07405 (N, A)
Drive: Kinetic buffering minimum speed fallen below
Message class:
Application/technological function faulted (17)
Reaction:
OFF2 (IASC/DCBRK, NONE, OFF1, OFF3, STOP2)
Acknowledge:
IMMEDIATELY
Cause:
During kinetic buffering the speed fell below minimum speed (p1257 or p1297 for vector drives with U/f control) and
the line supply did not return.
Remedy:
Check the speed threshold for the Vdc_min controller (kinetic buffering) (p1257, p1297).
See also: p1257 (Vdc_min controller speed threshold), p1297 (Vdc_min controller speed threshold (U/f))
F07406 (N, A)
Drive: Kinetic buffering maximum time exceeded
Message class:
Application/technological function faulted (17)
Reaction:
OFF3 (IASC/DCBRK, NONE, OFF1, OFF2, STOP2)
Acknowledge:
IMMEDIATELY
Cause:
The maximum buffer time (p1255 and p1295 for vector drives with U/f control) has been exceeded without the line
supply having returned.
Remedy:
Check the time threshold for Vdc-min controller (kinetic buffering) (p1255, p1295).
See also: p1255 (Vdc_min controller time threshold), p1295 (Vdc_min controller time threshold (U/f))
A07409 (N)
Drive: U/f control, current limiting controller active
Message class:
Application/technological function faulted (17)
Reaction:
NONE
Acknowledge:
NONE
Cause:
The current limiting controller of the U/f control was activated because the current limit was exceeded.
Remedy:
The alarm is automatically withdrawn after one of the following measures:
- increase current limit (p0640).
- reduce the load.
- slow down the ramp up to the setpoint speed.
Содержание SINAMICS G120
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Страница 726: ...2 Parameters 2 6 Quick commissioning p0010 1 SINAMICS G120 CU250S 2 Control Units 726 List Manual 09 2017 A5E33842890 ...
Страница 990: ...3 Function diagrams 3 26 Data sets SINAMICS G120 CU250S 2 Control Units 990 List Manual 09 2017 A5E33842890 ...
Страница 1242: ...A Appendix A 2 List of abbreviations SINAMICS G120 CU250S 2 Control Units 1242 List Manual 09 2017 A5E33842890 ...
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