Festo — CMMT-AS-...-S1 — 2021-04d
Product overview
19
Timing of SS1
Fig. 10: Timing diagram SS1
Legend for SS1 timing
Term/abbreviation
Explanation
Timer
Delay element in safety relay unit
CTRL-EN
Enable signal
t
Delay
Delay time until STO and SBC are requested (drive has safely come to a
standstill and brake is closed)
#STO-A/B
2-channel input for STO request
#SBC-A/B
2-channel input for SBC request
STA
Feedback, STO active
SBA
Feedback, SBC active
t
1
Braking ramp followed, rotational speed = 0 (functionally)
t
2
Brake closed and power stage switched off (functionally)
n
Rotational speed
Tab. 7: Legend for SS1 timing
