Siemens SIMATIC S7 Functional Safety Manual page 164

Technical specifications
A.2 Fail-Safe CPU technical specifications
Table A- 34 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
Isolation groups
Isolation (group-to-group)
Inductive clamp voltage
Switching delay (Qa.0 to Qa.3)
Switching delay (Qa.4 to Qb.1)
Maximum relay switching frequency
Pulse Train Output rate
Lifetime mechanical (no load)
Lifetime contacts at rated load
Behavior on RUN to STOP
Number of outputs on simultaneously
Cable length (meters)
Relay group-to-group isolation separates line voltage from SELV/PELV and separates different phases up to 250 VAC
1
line to ground.
For CPU models with relay outputs, you must install a digital signal board (SB) to use the pulse outputs.
2
Depending on your pulse receiver and cable, an additional load resistor (at least 10% of rated current) may improve
3
pulse signal quality and noise immunity.
External overload protection is to limit fire hazard. Overload can damage relay or transistor output.
4
164
CPU 1215FC
DC/DC/Relay
10
Relay, mechanical
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
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
2
1500 VAC
1
--
10 ms max.
10 ms max.
1 Hz
Not recommended
2
10,000,000 open/close cycles
100,000 open/close cycles
Last value or substitute value (default value 0)
10 outputs at 55 °C horizontal or 45 °C vertical
500 m shielded, 150 m unshielded
CPU 1215FC
DC/DC/DC
10
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.
No
5 A maximum must be limited to any
common
500 VAC for 1 minute
--
--
1
--
L+ minus 48 VDC,
1 W dissipation
1.0 μs max., off to on
3.0 μs max., on to off
50 μs max., off to on
200 μs max., on to off
--
100 kHz (Qa.0 to Qa.3) , 2 Hz min.
3
20 kHz (Qa.4 to Qb.1)
3
--
--
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA