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6 FUNCTIONAL SAFETY
6.4 Safety sub-function
Simultaneous operation of STO and SS1 functions
If SS1C (SS1 command) is turned off while the STO function is being executed, deceleration operation and time counting by
the SS1 function are not performed and the STO state continues.
As shown in the following sequence, if the SS1C (SS1 command) is turned off during the STO state by STOC (STO
command), time counting of the SS1 function is not executed. Even if STOC (STO command) is turned on, the STO state by
SS1C (SS1 command) continues and the STO state is not released.
Moreover, if STOC (STO command) is turned off while the SS1 function is being executed, both the deceleration operation of
SS1 and time counting are suspended.
0 r/min
Servo motor speed
STOC (STO command)
ON (disabled)
OFF (enabled)
SS1C (SS1 command)
ON (disabled)
OFF (enabled)
STOS (STO output)
OFF (enabled)
STO state by STOC
(STO command)
STO state by SS1C (SS1 command)
SS1 operation time
ON (disabled)