Siemens S7-1200 System Manual page 905

Table A- 133 Digital inputs
Model
Number of inputs
Type
Rated voltage
Continuous permissible voltage
Surge voltage
Logic 1 signal (min.)
Logic 0 signal (max.)
Leakage current (max.)
Isolation (field side to logic)
Isolation groups
1
Input delay times
Connection of 2 wire proximity sensor (Bero)
(max.)
Cable length
Number of inputs on simultaneously
Channels within a group must be of the same phase.
1
Table A- 134 Digital outputs
Model
Number of outputs
Type
Voltage range
Logic 1 signal at max. current
Logic 0 signal with 10K Ω load
Current (max.)
Lamp load
ON state contact resistance
Leakage current per point
Surge current
Overload protection
Isolation (field side to logic)
Isolation resistance
Isolation between open contacts
Isolation groups
Current per common (max.)
Inductive clamp voltage
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
SM 1223 DI 8 x 120/230 VAC / DQ 8 x Relay
8
IEC Type 1
120 VAC at 6 mA, 230 VAC at 9 mA
264 VAC
--
79 VAC at 2.5 mA
20 VAC at 1 mA
1 mA
1500 VAC for 1 minute
4
Typical: 0.2 to 12.8 ms, user selectable
Maximum: -
1 mA
Unshielded: 300 meters
Shielded: 500 meters
8
SM 1223 DI 8 x 120/230 VAC / DQ 8 x Relay
8
Relay, dry contact
5 to 30 VDC or 5 to 250 VAC
--
--
2.0 A
30 W DC / 200 W AC
0.2 Ω max. when new
--
7 A with contacts closed
No
1500 VAC for 1 minute (coil to contact)
None (coil to logic)
100 MΩ min. when new
750 VAC for 1 minute
2
10 A
--
Technical specifications
A.7 Digital signal modules (SMs)
905