Siemens SINAMICS G120 Function Manual page 271

Response times of the STO function when selected via a safety input
Table 8- 4
STO basic function
STO extended function
1)
Response time after PROFIsafe communication interruption
If the PROFIsafe telegram does not appear before the end of the PROFIsafe monitoring time
F_WD_Time, the inverter responds as follows:
● The inverter signals one of the following faults:
● The inverter selects the STO function.
Response times when limit values are violated
Table 8- 5
Function
SS1
SLS
SDI
2)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA
STO response times
When debounce time > 0: t_E = debounce time + 3 ms
If debounce time = 0: t_E = 4 ms
Depending on how you set the STO safety function, you can find a description of the debounce
time in one of the following sections:
STO as a basic function: Setting the filter for safety inputs (Page 94).
•
STO as an extended function: Setting the filter for safety inputs (Page 113).
•
– Fault F01611 (basic functions have been enabled)
– Message C01711 (extended functions have been enabled)
The inverter receives monitoring time F_WD_Time from the fail-safe controller (F-CPU).
See also the section Configuring PROFIBUS communication with telegram 30 via GSD
(Page 78).
Time until the response is initiated
Response
STOP A
STOP A or STOP B
STOP A or STOP B
If you switch on the motor when a safety function is active, the inverter detects a limit value
violation at the earliest after the "delay time actual value acquisition" has expired, also refer to
Section: Setting encoderless actual value sensing (Page 109).
Worst case for a fault-free inverter
4 ms + t_E
1)
50 ms + t_E
1)
Worst case for a fault-free
drive system
67 ms
System properties
8.2 Response times
Worst case for an inverter fault
6 ms + t_E
52 ms + t_E
Worst case when a fault
exists
113 ms
2)
1)
1)
2)
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