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Digital I/O modules

Versatile modules for digital signals in hazardous areas
The digital I/O modules (DIOM) are suitable for connecting up to 16 intrinsically safe digital signals. The channels can be used in pairs as inputs for contacts or proximity switches, or as outputs for low-power solenoid valves or indicator lamps. In addition, frequency/counter inputs are available with or without rotation direction recognition.

The digital I/O modules (DIOM) can be used to connect up to 16 intrinsically safe digital signals. All channels can be used in pairs as inputs for passive contacts or NAMUR proximity switches (EN 60947-5-6) or as outputs for low-power solenoid valves or Ex i indicator lamps.

Up to eight inputs can be used as frequency inputs/counters up to 20 kHz, and up to four inputs can be used in the "Rotation direction recognition" and "Forwards/backwards counter" operating modes. The Ex i inputs/outputs are short-circuit proof and galvanically separated from the system.

A blue LED and diagnostic messages provide early warnings that maintenance is required in order to avoid system downtime.
The Zone 1 versions have additional LEDs for each channel to indicate any line faults and the switching state.

  • *Versatile: Channels can be used in pairs as inputs or outputs
  • Versions with Ex ia inputs/outputs for installation in Zone 1 or Zone 2
  • Hot-swappable: Can be replaced while the system is in operation

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Max. ambient temperature
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Ex interface zone
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Max. Current Io
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Min. ambient temperature
Max. ambient temperature

7 Series (7 Products)

Digital Input Output Module Series 9470/32

  • Sixteen channels can be used in pairs as inputs or outputs
  • intrinsically safe Ex ia IIC inputs/outputs with line fault monitoring and LED error and status indication for each channel
  • module in Zone 1 can be hot swapped

Digital Input Output Module Series 9470/33

  • Sixteen channels can be used in pairs as inputs or outputs
  • intrinsically safe Ex ia IIC inputs/outputs with line fault monitoring
  • module in Zone 2 can be hot swapped

NAMUR Digital Input Output Module for Ex n Zone 2 Series 9471/35

  • Sixteen channels can be used in pairs as inputs or outputs
  • Ex nA inputs/outputs with line fault monitoring and LED error and status indication for each channel
  • module in Zone 2 can be hot swapped

Digital Input Output Module 24 V for Ex n Zone 2 Series 9472/35

  • Sixteen channels can be used in pairs as inputs or outputs (24 V/0.5 A)
  • Ex nA inputs/outputs with line fault monitoring and LED error and status indication for each channel plus SIL 2 shutdown input
  • module in Zone 2 can be hot swapped

Digital Input Module 24 V Ex n / NI Inputs, 16 Channels Series 9471

  • Sixteen channels for active 0/24 V signals – can also be used for frequencies
  • Ex nA inputs
  • module in Zone 2 can be hot swapped

Digital Input Module NAMUR Ex n Inputs, 16 Channels for Zone 2 / Div. 2 Series 9470/25

  • Sixteen channels for contacts and NAMUR proximity sensors – can also be used for frequencies
  • Ex nA inputs with line fault monitoring
  • module in Zone 2 can be hot swapped

Digital Input Module NAMUR Ex i / I.S. Inputs, 16 Channels for Zone 1 / Div. 1 Series 9470/22

  • Sixteen channels for contacts and NAMUR proximity sensors – can also be used for frequencies
  • intrinsically safe Ex ia IIC inputs with line fault monitoring
  • module in Zone 1 can be hot swapped
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