Siemens SINUMERIK 840D sl Function Manual page 458

Data descriptions
9.2 Parameters for SINAMICS S120
p9850 SI SGE switchover discrepancy time (Motor Module)
Sets the discrepancy time to changeover the safety-related inputs (SGE) on the
Motor Module/Hydraulic Module.
Because of the different runtimes of the two monitoring channels, an SIS switch‐
over is not effective at the same time. After an SGE switchover, a cross-comparison
of the dynamic data is not carried out during this discrepancy time.
For a crosswise data comparison between p9650 and p9850, a difference of one
safety monitoring clock cycle is tolerated. The parameterized time is internally
rounded-off to an integer multiple of the monitoring clock cycle.
See also: p9650
Unit: Default value:
μs 500000.00
p9851 SI STO/SBC/SS1 debounce time (Motor Module)
Setting the debounce time for the EP terminal of the Motor Module.
The debounce time is rounded-off to whole milliseconds. It specifies the maximum
duration of a fault pulse at the Failsafe Digital Inputs with no associated reaction
on the selection or deselection of the Safety Basic functions.
Example:
Debounce time = 1 ms: Interference pulses of 1 ms are filtered, only pulses longer
than 2 ms are processed.
Debounce time = 3 ms: Interference pulses of 3 ms are filtered, only pulses longer
than 4 ms are processed.
Unit: Default value:
ms 0.00
p9852 SI Safe Stop 1 delay time (Motor Module)
Sets the delay time of the pulse cancellation for the function "Safe Stop 1" (SS1)
on the Motor Module to brake along the OFF3 down ramp (p1135).
So that the drive is able to travel along the OFF3 ramp completely and any motor
holding brake that is being used can be applied, the delay time should be set as
follows:
Motor holding brake parameterized: Delay time >= p1135 + p1228 + p1217 motor
holding brake not parameterized: Delay time >= p1135 + p1228
Also refer to: p1135, p9652
For a crosswise data comparison between p9652 and p9852, a difference of one
safety monitoring clock cycle is tolerated. The parameterized time is internally
rounded-off to an integer multiple of the monitoring clock cycle.
Unit: Default value:
ms 0
458
Minimum value: Maximum value:
0.00 2000000.00
Minimum value: Maximum value:
0.00 10000.00
Minimum value: Maximum value:
0 300000.00
Checksum: Protection level:
Yes 3
Data type: Effectiveness:
Floating Point32 When exiting the
SI commissioning
mode
Checksum: Protection level:
Yes 3
Data type: Effectiveness:
FloatingPoint32 When exiting the
SI commissioning
mode
Checksum: Protection level:
Yes 3
Data type: Effectiveness:
FloatingPoint32 When exiting the
SI commissioning
mode
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated