Connecting Digital Inputs/Outputs - Siemens NCU 7 0.2 Series Manual

7.9.2

Connecting digital inputs/outputs

Cable specification
Table 7- 24
Characteristics
Connector type
Connection option
Current carrying capacity
Connecting cables for digital inputs/outputs
The following conditions apply to connecting cables:
● Use flexible cables with a cable cross-section of at least 0.25 mm
● Ferrules are not required.
Tools required
3.5-mm screwdriver or power screwdriver
Wiring digital inputs/outputs
1. Strip 6 mm of insulation from the wires.
2. Wire the digital inputs of the interface for connection of the sensors.
3. Wire the digital outputs of the interface for connection of the actuators.
4. Insert the cable into the corresponding spring-loaded terminal.
Using shielded cables
The following options are available for the shield connection when using shielded cables:
1. Attach the cable shield to a grounded shielding bus immediately after the cable entry
2. Continue routing the shielded cable as far as the module but do not make a connection to
NCU 7x0.2
Manual, 02/2011, 6FC5397-0AP20-0BA0
Cable specification for X122 and X132
Note
To achieve optimum interference suppression, shielded cables must be used to connect
measuring inputs or BEROs.
point in the cabinet (strip the insulation off the cable for this purpose).
the shield there.
7.9 Digital inputs/outputs
Version
Screw-type terminals
Up to 0.5 mm
2
4 A max.
2
Connecting
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