Hitachi NES1-004SB Quick Reference Manual page 48

[example] (sink logic)
Note1)The above is a method to perform analog input(O/OI) by voltage input. It is necessary for SW6
on the board to be set for voltage input(default).
Note2) If you want to connect a relay to an intelligent output terminal, please connect a surge
absorbing diode in parallel with the relay. The output circuit may malfunction by voltage surge.
(3) Switching the input control logic
- In the factory setting, and intelligent input terminals is the sink logic.
To switch the input control logic to the source logic, remove the jumper connecting terminals P24 and
PLC on the control circuit block, and then connect terminals PLC and L with the jumper.
1)Sink logic
2
5 4 3
H O/OI
Variable
Resistor
(1k~2k)
1 CM2 11
FM L PLC P24
Short circuit bar
(27Vdc 50mA max.)
2 1 CM2
L FM L PLC
Short circuit bar
(sink logic)
Frequency meter
2)Souce logic
5 - 13
Chapter 5 Wiring
Note2)
RY
11
P24
2 1 CM2 11
FM L PLC P24
Short circuit bar