Digital Inputs And Outputs - Siemens SIMATIC S7 Functional Safety Manual

A.2.2.4

Digital inputs and outputs

Table A- 16 Digital inputs
Technical data
Number of inputs
Type
Rated voltage
Continuous permissible voltage
Surge voltage
Logic 1 signal (min.)
Logic 0 signal (max.)
Isolation (field side to logic)
Isolation groups
Filter times
HSC clock input rates (max.)
(Logic 1 Level = 15 to 26 VDC)
Number of inputs on simultaneously
Cable length (meters)
Table A- 17 Digital outputs
Technical data
Number of outputs
Type
Voltage range
Logic 1 signal at max. current
Logic 0 signal with 10 KΩ load
Current (max.)
Lamp load
ON state resistance
Leakage current per point
Surge current
Overload protection
Required external overload protection
Isolation (field side to logic)
Isolation resistance
Isolation between open contacts
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
CPU 1214FC
DC/DC/Relay
14
Sink/Source (IEC Type 1 sink)
24 VDC at 4 mA, nominal
30 VDC, max.
35 VDC for 0.5 sec.
15 VDC at 2.5 mA
5 VDC at 1 mA
500 VAC for 1 minute
1
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
100/80 kHz (Ia.0 to Ia.5)
30/20 kHz (Ia.6 to Ib.5)
14 inputs at 55 °C horizontal or 45 °C vertical
500 m shielded, 300 m unshielded, 50 m shielded for HSC inputs
CPU 1214FC
DC/DC/Relay
10
Relay, mechanical
5 to 30 VDC or 5 to 250 VAC
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--
2.0 A
30 W DC / 200 W AC
0.2 Ω max. when new
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7 A with contacts closed
No
10 A maximum must be limited to any
4
common
1500 VAC for 1 minute (coil to contact)
None (coil to logic)
100 MΩ min. when new
750 VAC for 1 minute
Technical specifications
A.2 Fail-Safe CPU technical specifications
CPU 1214FC
DC/DC/DC
CPU 1214FC
DC/DC/DC
Solid state - MOSFET (sourcing)
20.4 to 28.8 VDC
20 VDC min.
0.1 VDC max.
0.5 A
5 W
0.6 Ω max.
10 μA max.
8 A for 100 ms max.
5 A maximum must be limited to any
common
500 VAC for 1 minute
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