40
Festo — CMMT-AS-...-S1 — 2021-04d
Technical data
Control inputs #STO-A and #STO-B at [X1A]
Min. input current with
high-level (I
H min
)
[mA]
50
Max. input current with
low-level (I
L max
)
[mA]
75
Min. input current in
transition range (I
T min
)
[mA]
1.5
Tolerance for low test pulses
Tolerated low test
pulses (t
STO,TP
) up to
max.
[ms]
1
Min. time between
low test pulses at
U
H min
<
U
STO-A/B
£
20 V
[ms]
200
Min. time between
low test pulses at
U
STO-A/B
>
20 V
[ms]
100
Tolerance for high test pulses
2)
Tolerated high test
pulses (t
STO,TP
) up to
max.
[ms]
1
Min. time between
high test pulses at
U
STO-A/B
<
U
L max
[ms]
200
1) Each channel has a separate overvoltage monitor for the power supply at the input. If the voltage at the input exceeds the permissible
maximum value, the channel is shut down.
2) High test pulses must not occur simultaneously at inputs #STO-A and #STO-B but only with a time offset.
Tab. 25: Control inputs #STO-A and #STO-B at [X1A]
Control inputs #SBC-A and #SBC-B at [X1A]
Specification
Based on type 3 to EN 61131-2
Nominal voltage
[V DC]
24
Permissible voltage
range
[V DC]
–3
…
30
Max. input voltage
high-level (U
H max
)
[V]
30
Min. input voltage
high-level (U
H min
)
[V]
13
