HRX-OM-O021
Chapter 3 Transport and Setting Up
3.7
Wiring of external switch
HRS Series
3-22
Be sure to shut off the breaker of the facility power supply (the user’s
machine power supply) before wiring.
3.7.2 Wiring
As an example of connection of an external switch, the
connecting method is shown below using the SMC flow switch
(NPN, PNP).
This chapter illustrates examples of wiring
Table3-8 External switches used in examples
Name
Manufacturer
Part NO.
Out put type
Current
consumption
PF2W7
□□
-
□□
-27
□
(-M)
NPN open collector output
70mA or less
Flow switch
SMC
PF2W7
□□
-
□□
-67
□
(-M)
PNP open collector output
70mA or less
1.
Prepare the external switch
2.
Depending on the external switch output type, wire the switch to the connector for
contact input / output (which is included as an accessory) as shown below. Mount the
ferrite core (3 turns), which is included as an accessory. This is an example of
wiringRefer to the Communications Operation Manual for more details.
NPN open collector output
Fig 3-17 Wiring of the external switch (NPN open collector output) (example)
PNP open collector output
Fig 3-18 Wire the communication cable to the connector included as an accessory.
Brown (DC 24V)
Brown (DC 24V)
Blue
(DC COM)
Black
(Output
１
)
Flow switch
Blue
(DC COM)
Black
(Output
１
)
Flow switch
Terminal NO.1
Terminal NO.12
Wire the
communication
cable to the
connector included
as an accessory.
Terminal NO.1
Terminal NO.12
Wire the
communication
cable to the
connector included
as an accessory.
