5.2Wiring of Control Circuit Terminals

SINK TYPE wiring

(Factory settings)

FM CM1 PLC P24

FW

8

7

6

5

4

3

2

1

H

O

OI

L

CM2

12

11

AL2 AL1 AL0

Input intelligent terminal

Frequency meter

 

RY

 

RY

 

Fault alarm

Frequency setting

(500

Ω to 2 kΩ)

 

For output

Current input

Intelligent terminal

27 VDC 50 mA

DC 4 to 20 mA

50 mA max

 

SOURCE TYPE wiring

FM CM1 PLC P24

FW

8

7

6

5

4

3

2

1

H

O

OI

L

CM2

12

11

AL2 AL1 AL0

Input intelligent terminal

Frequency meter

 

RY

 

RY

 

Fault alarm

Frequency setting

(500

Ω to 2 kΩ)

 

For output

Current input

Intelligent terminal

27 VDC 50 mA

DC 4 to 20 mA

50 mA max

 

NOTE 1: When an output intelligent terminal is used, be sure to install a surge absorbing diode in parallel with the relay (RY). Otherwise, the surge voltage created when the relay (RY) goes ON or OFF may damage the output intelligent terminal cir- cuit.

NOTE 2: Use a twisted and shielded wire for the signal line, and cut the shielded covering as shown in the diagram below. Make sure that the length of the signal line is 20 meters or less.

5-5

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Hitachi J300U Series instruction manual Wiring of Control Circuit Terminals, FM CM1 PLC P24 CM2 AL2 AL1 AL0