Siemens SINAMICS G120 List Manual page 1096

4 Faults and alarms
4.2 List of faults and alarms
Remedy: If required, reduce the traversing range or position resolution (p2506).
Increase the fine resolution of absolute position actual value (p0419).
Note for fault value = 3:
If the value for the maximum possible absolute position (LU) is greater than 4294967296, then it is not possible to
make an adjustment due to an overflow.
For rotary encoders, the maximum possible absolute position (LU) is calculated as follows:
1. Motor encoder
p2506 * p2505 / p2504
p2506 * p2505 * p0421 / p2504 for multiturn encoders
2. Direct encoder
p2506
p2506 * p0421 for multiturn encoders
F07494 LR: Drive Data Set changeover in operation
Message class: Application/technological function faulted (17)
Reaction: OFF1 (OFF2, OFF3)
Acknowledge: IMMEDIATELY
Cause: A Drive Data Set changeover (DDS) with a change of the mechanical relationships (p2503 ... 2506), direction of
rotation (p1821) or the encoder assignment (p2502) was requested in operation.
Note:
DDS: Drive Data Set
Remedy: To changeover the drive data set, initially, exit the "operation" mode.
A07495 (F) LR: Reference function interrupted
Message class: Application/technological function faulted (17)
Reaction: NONE
Acknowledge: NONE
Cause: An activated reference function (reference mark search or measuring probe evaluation) was interrupted.
Possible causes:
- an encoder fault has occurred (Gn_ZSW.15 = 1).
- position actual value was set during an activated reference function.
- simultaneously activate reference mark search and measuring probe evaluation (BI: p2508 and BI: p2509 = 1
signal).
- activated reference function (reference mark search or measuring probe evaluation) was deactivated (BI: p2508
and BI: p2509 = 0 signal).
- the input terminal for the measuring probe is not set.
Remedy: - check the causes and resolve.
- reset the control (BI: p2508 and BI: p2509 = 0 signal) and activate the requested function.
- set the input terminal for the measuring probe (p0488, p0489 or p2517, p2518).
A07496 EPOS: Enable not possible
Message class: Application/technological function faulted (17)
Reaction: NONE
Acknowledge: NONE
Cause: It is not possible to enable the basic positioner because at least one signal is missing.
Alarm value (r2124, interpret decimal):
1: EPOS enable missing (BI: p2656).
2: Position actual value, valid feedback signal missing (BI: p2658).
See also: p2656 (EPOS enable basic positioner), p2658 (EPOS position actual value valid feedback signal)
Remedy: Check the appropriate binector inputs and signals.
1096
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890