Simultaneity And Tolerance Time Of The Two Monitoring Channels - Siemens SINUMERIK 840D sl Function Manual

Safety Functions integrated in the drive
5.6 Control via terminals on the Control Unit and the power unit
Note
The same grouping must be set in both monitoring channels.
If a fault in a drive results in a Safe Torque Off (STO), this does not automatically mean that
the other drives in the same group also switch to Safe Torque Off (STO).
The assignment is checked during the test for the switch-off signal paths. The operator selects
Safe Torque Off for each group. The check is drive-specific.
Example: Terminal groups
It must be possible to select/deselect the Safe Torque Off function separately for group 1
(drives 1 and 2) and group 2 (drives 3 and 4).
For this purpose, the same grouping for Safe Torque Off must be performed on both the Control
Unit and the Motor Modules.
Figure 5-3
5.6.2

Simultaneity and tolerance time of the two monitoring channels

The Safe Torque Off function must be selected and deselected simultaneously in both
monitoring channels using the input terminals and is only effective for the associated drive.
1 signal: Deselects the function
0 signal: Selects the function
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Example: Grouping the terminals for Motor Modules, booksize format
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated