Technical specifications
A.2 CPU modules
Easy Book
104 Manual, 05/2009, A5E02486774-01
Digital outputs Relay DC
Isolation (field side to logic)
• Coil to contact 1500 VAC for 1
minute
• Coil to logic: None
500 VAC for 1 minute
Isolation resistance 100 MΩ min. when new N/A
Isolation between open contacts 750 VAC for 1 minute N/A
Isolation groups AC/DC/Relay and DC/DC/Relay
• CPU 1211C: 1
• CPU 1212C: 2
• CPU 1214C: 2
DC/DC/DC
• CPU 1211C: 1
• CPU 1212C: 1
• CPU 1214C: 1
Inductive clamp voltage N/A L+ minus 48 VDC, 1 W dissipation
Switching delay (Qa.0 to Qa.3) 10 ms max. 1.0 μs max., off to on
3.0 μs max., on to off
Switching delay (Qa.4 to Qb.1) 10 ms max. 50 μs max., off to on
200 μs max., on to off
Pulse Train Output rate
(Qa.0 and Qa.2)
Not recommended 100 KHz max.,
2 Hz min.
Lifetime mechanical (no load)
Lifetime contacts at rated load
10,000,000 open/close cycles
100,000 open/close cycles
N/A
Behavior on RUN to STOP Last value or substitute value (default value 0)
Cable length (meters) 500 m shielded, 150 m unshielded
Analog inputs Description
Number and type of inputs 2 Voltage (single-ended) inputs
CPU 1211C, CPU 1212C, and CPU 1214C
Range 0 to 10 V
Full-scale range (data word)
1
0 to 27648
Overshoot range (data word)
1
27649 to 32511
Overflow (data word)
1
32512 to 32767
Resolution 10 bits
Maximum withstand voltage 35 VDC
Smoothing
2
None, Weak, Medium, or Strong
Noise rejection
3
10, 50, or 60 Hz
Impedance ≥100 KΩ
Isolation (field side to logic) None
Accuracy (25°C / 0 to 55°C) 3.0% / 3.5% of full-scale
Common mode rejection 40 dB, DC to 60 Hz
Operational signal range Signal plus common mode voltage must be less than +12 V
and greater than -12 V
Cable length 10 m, twisted and shielded
1
Refer to the S7-1200 system manual for voltage and current representations of the analog inputs.
2
Refer to the S7-1200 system manual for step response times of the analog inputs.
3
Refer to the S7-1200 system manual for sample rates of the analog inputs.
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