Sink type wiring (factory settings), Source type wiring, 5 5.2 wiring of control circuit terminals – Hitachi J300U Series User Manual
Page 25
5-5
5.2
Wiring of Control Circuit Terminals
FM CM1 PLC P24 FW
8
7
6
5
4
3
2
1
H
O
OI
L
CM2 12
11
AL2 AL1 AL0
Frequency meter
Input intelligent terminal
Frequency setting
(500
Ω
to 2 k
Ω
)
Fault alarm
For output
Intelligent terminal
27 VDC 50 mA
50 mA max
Current input
DC 4 to 20 mA
RY
RY
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
Frequency meter
Input intelligent terminal
Frequency setting
(500
Ω
to 2 k
Ω
)
Fault alarm
For output
Intelligent terminal
27 VDC 50 mA
50 mA max
Current input
DC 4 to 20 mA
RY
RY
SOURCE TYPE wiring
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.