Model
Isolation groups
Current per common (max.)
Inductive clamp voltage
Switching delay
Maximum relay switching frequency
Lifetime mechanical (no load)
Lifetime contacts at rated load (N.O.
contact)
Behavior on RUN to STOP
Number of outputs on simultaneously 8
Cable length (meters)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
SM 1222 DQ 8 x Relay
2
10 A
--
10 ms max.
1 Hz
10,000,000 open/close
cycles
100,000 open/close cycles
Last value or substitute
value (default value 0)
500 m shielded,
150 m unshielded
A.9 Digital signal modules (SMs)
SM 1222 DQ 8 Relay
Changeover
8
2 A
--
10 ms max.
1 Hz
10,000,000 open/close
cycles
100,000 open/close cy-
cles
Last value or substitute
value (default value 0)
4 (no adjacent points)
•
at 60 °C horizontal or
50 °C vertical
8 at 55 °C horizontal
•
or 45 °C vertical
500 m shielded,
150 m unshielded
Technical specifications
SM 1222 DQ 8 x 24 V DC
1
4 A
L+ minus 48 V, 1 W dis-
sipation
50 μs max. off to on
200 μs max. on to off
--
--
--
Last value or substitute
value (default value 0)
8
500 m shielded,
150 m unshielded
1445