Wiring Of Input And Output; Common Precautions To Input And Output; Input Wiring - Panasonic FP7 User Manual

Input/Output Specifications and Wiring

3.2 Wiring of Input and Output

3.2.1 Common Precautions to Input and Output

 Wiring position
Arrange the wiring so that the input and output wiring are separated, and these wirings are
separated from the power wiring, as much as possible. Do not route them through the same
duct or tie them in a bundle. Separate the input/output wires from the power and high voltage
wires by at least 100 mm.
 Selection of wires
Be sure to select the thickness (dia.) of the input and output wires while taking into
consideration the required current capacity.
 Power supply
Wiring should be carried out after the power supply to the PLC was turned off.If they are
connected during the power supply is on, it may cause the fault or malfunction.

3.2.2 Input Wiring

The following figures show the case when they are connected with the + common.
 Connection of photoelectric sensor and proximity sensor
Relay output type
Sensor
Relay
Power supply for sensor
NPN open collector output type
Sensor
Two-wire output type
Sensor
3-8
Input
COM
＋
Power supply for input
Vcc
＋
Sensor output
Input
0 V
COM
＋
Power supply for input
Sensor output
Input
COM
＋
Power supply for input
PLC
PLC
PLC