Serviceline Industrial Sensors
Serviceline Explosion Protection

Remote I/O Systems

What is remote I/O?

Modular remote I/O systems transmit process data from safe or explosion hazardous areas by connecting binary and analog sensors and actors to the control system via a bus interface.

You can connect 4 mA … 20 mA devices to remote I/O, including water flow transmitters, valve positioners, pressure transducers, or temperature transmitters. Devices such as thermocouples, resistance temperature detectors (RTDs), mechanical contacts, and visual or audible alarms may also be connected. Our remote I/O systems are compatible with network protocols like PROFIBUS DP, MODBUS RTU, MODBUS TCP/IP and FOUNDATION fieldbus.

Typical applications for remote I/O systems

Remote I/O is ideal for use where your application is located in explosion hazardous areas or harsh industrial environments like marine and outdoors. Typical applications include oil and gas (onshore and offshore), pharmaceutical, chemical, waste water, food and beverage, and others.

Why use remote I/O?

Remote I/O systems are characterized by high functionality and simple handling. Remote I/O is the right choice when you want to put isolated barriers (I/O modules) close to the field devices.

This means that you reduce wiring, because the system is installed close to the field devices, and just one fieldbus cable is used from the remote I/O system to the distributed control system. Due to the reduced wiring effort, you not only save cables, but also time, money, and work effort. Hence, Remote I/O can be installed in a decentralized location inside hazardous areas.

  • Remote I/O can be used in explosion-hazardous areas
  • Only one communication line from DCS to Remote I/O necessary (e.g. PROFIBUS DP, MODBUS RTU and MODBUS TCP/IP)
  • Control and monitor sensors and actors from the control room
  • Wiring to field devices can remain in case of modernization

Pepperl+Fuchs offers remote I/O systems for different types of hazardous environments: