Initiating Esr For A Communication Failure - Siemens SINAMICS S120 Function Manual

5.5.2

Initiating ESR for a communication failure

If, braking the axis along the braking ramp for a communication failure can result in
subsequent damage, the braking operation can be delayed by a maximum of 800 ms. During
this delay time, the converter can suitably stop the axis using the "Extended stop and retract
(ESR)" function.
If communication with the higher-level motion control is working (for example, if the TM54F
fails or the SIMATIC F-CPU with separate motion control fails), retraction can also be
performed during the delay time by the controller. This assumes that retraction is configured
on the controller side, see, S_ZSW1B, bit 14 (r9734.14) "ESR retract requested".
Preconditions
The following preconditions apply to the drive response subsequently described:
● You have released the Safety Integrated Basic/Extended/Advanced Functions.
● Function module "Extended stop and retract" is activated and enabled.
Communication failure
In this context, communication failure can mean the following:
● Interruption or disturbance in PROFIsafe communication
● The higher-level controller (SIMATIC F-CPU) is in the STOP state
● Interruption of disturbance in the DRIVE-CLiQ communication for control via TM54F
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
5.5 Communication failure via PROFIsafe or with TM54F
Control of the safety functions
239