On/Off Valve Reduced Wiring System
Oji Engineering Co., Ltd.
Drastically reduced system design and system startup time and manpower.
2023年 8月
System Configuration
DCS (Distributed Control System) control stations and PLCs are connected via an inter-controller network. Deployment of CC-Link via PLCs allows solenoid valves and digital input units to be connected on CC-Link.

Solenoid valve storage panel interior

On/Off valve on-site installation status
Results
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- Simplified power circuitry.
- Solenoid valve circuit buffer relays and terminal blocks are not required, with 8 consecutive block type solenoid valves used to simplify power circuitry and decrease board size.
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- Simplified wiring within the board.
- Autonomous I/F boards are not required as the component count is less, drastically reducing board wiring.
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- Reduced wiring construction costs.
- The DCS and solenoid valve storage panel are connected via a transmission cable bus, achieving large cost benefits in terms of on-site wiring work.
Source: Oji Engineering Co., Ltd.