Siemens Sinumerik 840D sl Function Manual page 643

10/15
© Siemens AG 2015 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
An example for evaluating the bit--coded result list is provided in the
description of the drive machine data.
Remedy
The difference in the states between the drive and NCK should be
determined and the function involved should be investigated in more
detail.
Example
State, NCK: SBH is active and ok
State, drive: SG1 is active and ok
The fault is caused due to the fact that the SGE "SBH deselection" is
controlled differently. The signal source should be checked on both the
NCK and drive sides. Generally, the different control (in operation) is a
result of a hardware failure associated with the sensor signal involved.
In the commissioning phase, the cause can also be parameterization or
programming errors.
2
For the monitoring function SN or n < n
between the NCK and drive.
The actual status image of the NCK (result list 2) is output as supple-
mentary info %3 (comparison value NCK) and the actual status image
from the drive is output as supplementary info %4 (comparison value,
drive). The two result lists are also written into as parameter r9711[0]
(NCK) and r9711[1] (drive). An example for evaluating the bit--coded
result list is provided in the description of the drive parameter.
Remedy
The difference in the states between the drive and NCK should be
determined and the function involved should be investigated in more
detail.
3
The difference between the safe actual value NCK and drive is greater
than that set in MD36942 $MA_SAFE_POS_TOL.
When using the actual value synchronization, the difference of the
speed (determined based on the safety actual values) is greater than
that set in MD36949 $MA_SAFE_SLIP_VELO_TOL.
Remedy
Commissioning phase:
The encoder evaluation for the NCK and drive is not correctly set -->
correct the encoder evaluation.
In operation:
The actual values differ due to mechanical faults (transmission belts,
traversing to mechanical limit, wear and tolerance windows that have
been set too narrow, encoder faults...)
--> check the mechanical configuration and the encoder signals
4
Not assigned.
5
The setting in MD36901 $MA_SAFE_FUNCTION_ENABLE does not
correspond with the associated drive parameter assignment.
10.2NCK safety alarms for Sinumerik 840D sl
, a different state has occurred
x
Diagnostics
10-643