Siemens SINAMICS G120 Function Manual page 270

System properties
8.2 Response times
Response times of the STO function after selection.
The response times depend on the following conditions:
● Safety function setting
– Basic function
– Extended function
● PROFIBUS or PROFINET
● Selected via safety input or PROFIsafe
The response times in the tables below apply from the point at which the safety input signal
changes or the PROFIsafe telegram is received.
The "worst case values" in the tables mean the following:
Worst case for a fault-free
inverter:
Worst case for an inverter fault: The response time is less than or equal to the specified
Response times of the STO function when selected via PROFIsafe
Table 8- 2
PROFIBUS
PROFINET
Table 8- 3
PROFIBUS
PROFINET
Bus cycle time: Time for a cyclic data exchange via PROFINET.
270
The response time is less than or equal to the specified
value. The response time is valid for fault causes outside
the inverter itself, e.g.:
• Incorrect setpoint input from the higher-level control
• Speed has violated the limit value
value. The response time is valid for fault causes inside the
inverter itself, e.g.:
• Fault/error in a switch-off signal path
• Microprocessor error
Response times of the STO basic function
Worst case for a fault-free inverter
Response times of the STO extended function
Worst case for a fault-free inverter
54 ms + bus cycle time
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
system
14 ms
14 ms + bus cycle time
54 ms
Function Manual, 04/2014, FW V4.7, A5E34261271B AA
Worst case for an inverter fault
Worst case for an inverter fault
56 ms
56 ms + bus cycle time