List of faults and alarms
Faults and Alarms
3-1537
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
F07404 Drive: Upper DC link voltage threshold reached
Drive object: SERVO
Reaction: OFF2 (NONE, OFF1, OFF3)
Acknowledge: IMMEDIATELY
Cause: The DC link voltage monitoring is active (p1240 = 1, 3) and the upper DC link voltage threshold (p1244) was reached
in the "Operation" state.
Remedy: - check the line supply voltage.
- check the infeed module or the Braking Module.
- increase the upper DC link voltage threshold (p1244).
- switch-out (disable) the DC link voltage monitoring (p1240 = 0).
F07404 Drive: Upper DC link voltage threshold reached
Drive object: VECTOR
Reaction: OFF2 (NONE, OFF1, OFF3)
Acknowledge: IMMEDIATELY
Cause: The DC link voltage monitoring is active (p1240 , p1280 = 4, 6) and the upper DC link voltage threshold (r1242,
r1282) was reached in the "Operation" state.
Remedy: - check the line supply voltage.
- check the infeed module
- adapt the device supply voltage (p0210).
- disable the DC link voltage monitoring (p1240, p1280 = 0).
F07405 (N, A) Drive: Kinetic buffering minimum speed not reached
Drive object: VECTOR
Reaction: OFF2 (IASC / DCBRAKE, NONE, OFF1, OFF3, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: During kinetic buffering the speed fell below minimum speed (p1257 or p1297 for vector drives with V/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)
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
F07406 (N, A) Drive: Kinetic buffering maximum time exceeded
Drive object: VECTOR
Reaction: OFF3 (IASC / DCBRAKE, NONE, OFF1, OFF2, STOP1, STOP2)
Acknowledge: IMMEDIATELY
Cause: The maximum buffer time (p1255 and p1295 for vector drives with V/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)
Reaction upon N: NONE
Acknowl. upon N: NONE
Reaction upon A: NONE
Acknowl. upon A: NONE
A07409 Drive: V/f control, current limiting controller active
Drive object: VECTOR
Reaction: NONE
Acknowledge: NONE
Cause: The current limiting controller of the V/f control was activated because the current limit was exceeded.
Remedy: The alarm is automatically withdrawn when increasing the current limit (p0640), reducing the load or using a slower
up ramp for the setpoint (reference) speed.
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