8643 Power I/O Box

Brand: Burkert Fluid Control Systems
Does not ship to United States

The Power I/O Box Type 8643, Burkert offers a system that allows extremely cost effective connection of distributed binary signals to a process control system. Communication takes place via fieldbus in accordance with the IEC 61158.

The hardware offers 4 intrinsically safe digital outputs making it possible to control a wide range of intrinsically safe actuators such as solenoid valves, relays or indicator lights. 8 intrinsically safe digital inputs operate in accordance with Namur specifications.

This enables a broad spectrum of binary sensors ensuring that users are not limited to a specific manufacturer when selecting actuator or sensor technology. The device with the FF H1 interface offers DO and DI function blocks in a number of different versions in order to meet all of the demands programmers place on such systems.

A variety of housing materials including polyester and Aluminum offers additional enhancements for the field of application.
  • Efficient connection of binary signals to a central automation system
  • Connection of up to 4 pilot valves and 8 NAMUR proximity switches
  • Integrated diagnostic and monitoring functions


Actuator Type

  • Pneumatic

Ambient Temperature Range

  • -20° to 60° C (-4° to 140° F)


  • Chemical Industry
  • Industrial Wastewater Treatment
  • Oil & Gas Industry & Pipeline Installations
  • Pharmaceutical Solvent Areas

Approvals & Certifications

  • ATEX 2051 - II 2 (1) G Ex Mb E [ia] IIC T4 PTB 06
  • FISCO Ex I or Ex-e ITK 5.0, FF Certified
  • IEC 61158-2 - According Interfaces FF H1 & PA
  • NAMUR - 8 Intrinsically Safe Inputs (According EN 50227)

Cable Entry

  • Polyamide Cable Gland


  • Insulation: Class III


  • FOUNDATION Fieldbus


  • Bus Power Consumption: 12 mA
  • Bus Power Consumption: 17 mA FDE


  • Maximum

Electrical Connectors

  • Inputs & Outputs: Terminal Strip (0 to 2.5 mm²)

Enclosure, Body Material

  • Polyester (Black)
  • Powder-Coated Aluminum (Grey)

Environmental Protection

  • Intrinsically Safe
  • IP65


  • LED


  • Minimum Holding Current: 15 mA
  • Minimum Switching Current: 30 mA at 24 V- Reduction to 50 % after 50 ms
  • Open Circuit Voltage: 24 V


  • Output Internal Resistance: < 340 ohms

Supply Voltage

  • 17-32 Vdc
  • Auxiliary Supply: 24 V


  • Voltage Range Bus: 9-32 Vdc

  • Chemical industry
  • Pharmaceutical Solvent Areas
  • Oil and gas industry and pipeline installations
  • Industrial wastewater treatment


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