Siemens SIMATIC S7-1200

Technical specifications
A.4 CPU 1211C
S7-1200 Programmable controller
1376 System Manual, V4.2, 09/2016, A5E02486680-AK
A.4.3
Digital inputs and outputs
Table A- 16 Digital inputs
Technical data
CPU 1211C AC/DC/Relay, CPU 1211C DC/DC/Relay, and
CPU 1211C DC/DC/DC
Number of inputs
6
Type Sink/Source (IEC Type 1 sink)
Rated voltage
24 V DC at 4 mA, nominal
Continuous permissible voltage 30 V DC, max.
Surge voltage
35 V DC for 0.5 sec.
Logic 1 signal (min.)
15 V DC at 2.5 mA
Logic 0 signal (max.)
5 V DC at 1 mA
Isolation (field side to logic)
707 V DC (type test)
Isolation groups
1
Filter times us settings: 0.1, 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 10.0, 12.8, 20.0
ms settings: 0.05, 0.1, 0.2, 0.4, 0.8, 1.6, 3.2, 6.4, 10.0, 12.8, 20.0
HSC clock input rates (max.)
(Logic 1 Level = 15 to 26 V DC)
100/80 kHz (Ia.0 to Ia.5)
Number of inputs on simultaneously
6 at 60 °C horizontal, 50 °C vertical
Cable length (meters)
500 m shielded, 300 m unshielded, 50 m shielded for HSC inputs
Table A- 17 Digital outputs
Technical data
CPU 1211C AC/DC/Relay and
CPU 1211C DC/DC/Relay
CPU 1211C DC/DC/DC
Number of outputs
4
Type
Relay, mechanical
Solid state - MOSFET (sourcing)
Voltage range
5 to 30 V DC or 5 to 250 V AC
20.4 to 28.8 V DC
Logic 1 signal at max. current
--
20 V DC min.
Logic 0 signal with 10 KΩ load
--
0.1 V DC max.
Current (max.)
2.0 A
0.5 A
Lamp load
30 W DC / 200 W AC
5 W
ON state resistance 0.2 Ω max. when new 0.6 Ω max.
Leakage current per point
--
10 μA max.
Surge current
7 A with contacts closed
8 A for 100 ms max.
Overload protection
No
Isolation (field side to logic) 1500 V AC
(coil to contact)
None (coil to logic)
707 V DC (type test)
Isolation groups
1
Inductive clamp voltage
--
L+ minus 48 V DC, 1 W dissipation
Maximum relay switching frequency
1 Hz
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