Digital Inputs - Siemens CPU 31 Series Technical Data Manual

6.6.6

Digital inputs

Introduction
This section provides the specifications for the digital inputs of CPUs 31xC.
The table includes the following CPUs:
• under CPU 313C-2, the CPU 313C-2 DP and CPU 313C-2 PtP
• under CPU 314C-2, the CPU 314C-2 DP and CPU 314C-2 PtP
Technical data
Table 6-12 Technical data of digital inputs
Technical data
Module-specific data
Number of inputs
Number of these inputs which can be used
•
for technological functions
Cable length
Unshielded
•
Shielded
•
Voltage, currents, potentials
Rated load voltage L+
Polarity reversal protection
•
Number of inputs which can be controlled
simultaneously
Horizontal assembly
•
Up to 40 °C
–
up to 60 °C
–
Vertical assembly
•
Up to 40 °C
–
Electrical isolation
Between channels and the backplane bus
•
Between the channels
•
Permitted potential difference
Between different circuits
•
Insulation test voltage
Current consumption
On load voltage L+ (no-load)
•
CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06
CPU 312C CPU 313C
CPU 312C CPU 313C
10 24
8 12
For standard DI: Max. 600 m
For technological functions: No
For standard DI: Max. 1000 m
For technological function at Max. counting frequency
100 m 100 m
CPU 312C CPU 313C
DC 24 V
Yes
10 24
5 12
5 12
Yes
No
75 VDC / 60 VAC
500 VDC
– Max. 70 mA
Technical data of CPU 31xC
6.6 Technical data of the integrated I/O
CPU 313C-2 CPU 314C-2
CPU 313C-2 CPU 314C-2
16 24
12 16
100 m 50 m
CPU 313C-2 CPU 314C-2
16 24
8 12
8 12
Max. 70 mA Max. 70 mA
6-45