Siemens SINAMICS G120D List Manual page 824

Faults and alarms
List of faults and alarms
Remedy: Not necessary.
This alarm automatically disappears after the offset has been saved.
See also: p2507 (LR absolute encoder adjustment status), p2525 (LR encoder adjustment offset)
F07442 (A) LR: Multiturn does not match the modulo range
Reaction: OFF1 (OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: The ratio between the multiturn resolution and the modulo range (p2576) is not an integer number.
This results in the adjustment being set back, as the position actual value cannot be reproduced after power-
off/power-on.
Remedy: Make the ration between the multiturn resolution and the modulo range an integer number.
The ratio v is calculated as follows:
1. Motor encoder
v = (p0421 * p2506 * p2505) / (p2504 * p2576)
2. Direct encoder
v = (p0421 * p2506) / p2576
See also: p2504 (LR motor/load motor revolutions), p2505 (LR motor/load load revolutions), p2506 (LR length unit
LU per load revolution), p2576 (EPOS modulo correction modulo range)
F07443 (A) LR: Reference point coordinate not in the permissible range
Reaction: OFF1 (OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: The reference point coordinate received when adjusting the encoder via connector input p2599 lies outside the half
of the encoder range and cannot be set as actual axis position.
Fault value (r0949, interpret decimal):
Maximum permissible value for the reference point coordinate.
Remedy: Set the reference point coordinate to a lower value than specified in the fault value.
See also: p2598 (EPOS reference point coordinate signal source), p2599 (EPOS reference point coordinate value)
F07450 (A) LR: Standstill monitoring has responded
Reaction: OFF1 (OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: After the standstill monitoring time (p2543) expired, the drive left the standstill window (p2542).
- position actual value inversion incorrectly set (p0410).
- standstill window set too small (p2542).
- standstill monitoring time set too low (p2543).
- position loop gain too low (p2538).
- position loop gain too high (instability/oscillation, p2538).
- mechanical overload.
- Connecting cable, motor/drive converter incorrect (phase missing, interchanged).
- when selecting motor identification, select tracking mode (BI: p2655[0] = 1 signal).
Remedy: Check the causes and resolve.
F07451 (A) LR: Position monitoring has responded
Reaction: OFF1 (OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: When the position monitoring time (p2545) expired, the drive had still not reached the positioning window (p2544).
- positioning window parameterized too small (p2544).
- position monitoring time parameterized too short (p2545).
- position loop gain too low (p2538).
- position loop gain too high (instability/oscillation, p2538).
- drive mechanically locked.
Remedy: Check the causes and resolve.
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SINAMICS G120D List Manual (LH14), 01/2013