Advertisement
4
Function Description
4.3
Safety functions
Sicherheitsfunktion_haengende_Lasten
Sicherheitsfunktion_SS1_S1_Diagramm
Reaction
Controlled braking of the drive, with the configured braking ramp.
When the STO delay time has elapsed, the safety card activates the
safety function "safe torque off" (STO). The motor becomes torque-
free.
"STO Acknowledge" output: "1" Signal
If any external forces influence the motor axis (e.g. suspended loads),
additional measures (e.g. a safety holding brake) are required in order to
eliminate hazards.
Timing diagram: STO is started once the STO delay time has elapsed
v
Tolerance window
Braking ramp
Limit value
Standstill detection
1
SS1 Activate
0
1
SS1 SIL3/Reset
0
1
Ready
0
1
STO Acknowledge
0
Braking ramp
t 1
STO delay time
STO
t 2
t
4-13
Advertisement
Chapters
