Siemens SIMODRIVE POSMO A User Manual page 250

02.99 08.06 04.01
911 / P954.11 Hardware limit switch crossed/reached
Cause The axis has reached or crossed a hardware limit switch.
The exact limit switch is defined by the simultaneously output error or
warning of the software limit switch.
Remedy Acknowledge fault.
Continued travel in opposite direction.
Note:
Continued travel is generally only possible in the opposite direction.
If the hardware limit switch is crossed, continued travel in the original
direction is only possible if travel continues in the opposite direction
following fault acknowledgement and if the hardware switch is crossed
again.
This ensures that the axis is within the permitted traversing range.
Acknowledgement not required
Stop response None
912 / P954.12 No cams occurred before the zero mark
Cause This supplementary information has been reported together with the
fault 711 "Flying measurement/actual value setting":
The function "Reference to occurring zero mark" has been activated in
the current traversing block.
In addition, an input terminal has been parameterized with the function
"Cam monitoring".
However, a reference cam edge was not detected before the zero mark
occurred.
The drive has therefore been dereferenced for safety reasons.
Remedy Ensure that the input terminal connected to the cam is correctly para-
meterized and that the cam is connected to the correct input terminal.
Ensure that the type of BERO (NC contact/NO contact) corresponds to
P56 (bit7).
Acknowledgement not required
Stop response None
913 / P954.13 Invalid reference point data
Cause This supplementary information has been reported together with the
fault 711 "Flying measurement/actual value setting":
The selected reference point in P5 or the reference point in P85:27 is
outside the valid adaptation band.
The drive was not referenced again.
Remedy Check P5 and P85:27 with the permissible value limits (see P702).
Parameterize reference points only in such a way that they are not po-
sitioned on the limit values of the adaptation band.
Acknowledgement not required
Stop response None
E Siemens AG 2013 All Rights Reserved
SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
6 Fault Handling and Diagnostics
6.2 Faults and warnings
6
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