Siemens SINAMICS S120 Function Manual page 379

Note
Delayed pulse cancellation when the bus fails
For SLP, SLS, SDI and SLA the stop responses are also available with delayed pulse
suppression when the bus fails (to prevent the drive from immediately responding with pulse
suppression when a communication error occurs):
• If p9580 ≠ 0 and SLS is active, in the event of a communication failure, the parameterized
ESR reaction only occurs if a STOP with delayed pulse suppression when the bus fails
has been parameterized as the SLS response (p9563[0...3] ≥ 10).
• If p9580 ≠ 0 and SDI is active, in the event of a communication failure, the parameterized
ESR reaction only occurs if a STOP with delayed pulse suppression when the bus fails
has been parameterized as the SDI response (p9566 ≥ 10).
• If p9580 ≠ 0 and SLP is active, in the event of communication failure the parameterized
ESR reaction is only realized if, as an SLP response, a STOP with delayed pulse
suppression when the bus fails has been parameterized (p9562[0...1] ≥ 10).
• If p9580 ≠ 0 and SLA is active, in the event of a communication failure, the parameterized
ESR reaction only occurs if a STOP with delayed pulse suppression when the bus fails
has been parameterized as the SLA response (p9579 ≥ 10).
The delay time (p9580) must not exceed 800 ms.
Note
Delay time between STOP F and STOP B
A delay time between STOP F and STOP B should only be set if an additional response is
initiated during this time when the "Internal Event" (r9722.7) message signal is evaluated.
Further, when using the delay time, a monitoring function should always be selected (e.g.
SLS with a high limit speed) or the hysteresis of SSM should be configured.
When hysteresis is activated for SSM, then this should be considered to be an activated
monitoring function.
Switch-on delays at the stop response transitions
t
B
t
C
t
D
t
F1
t
F2
n
shutdown
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
p9556
p9552
p9553
p9658
p9555
: p9560
Maintenance
9.3 Safety faults
377