8 x 4 to 20 mA in

PROFIBUS-Interface for zone 1/21
  • 8 channels
  • Ex ia/ib
  • 12 bit resolution
  • Galvanic isolation
  • LED display
  • Programmable address on front panel


In the Ex i version, the MODEX 8 x 4 to 20 mA module with 8 analogue inputs enables the supply and data logging of 8 analogue intrinsically safe two-wire transmitters. The input signal has 12-bit resolution and is transmitted with high interference resistance. The module is connected to the process control system via the PROFIBUS-DP. Coding rotary switches are available for addressing the module. Diagnostics data indicating the status of the outputs with respect to a disconnection or short-circuit can also be transmitted in addition to the user data. This is also displayed on the module itself using LEDs.

Technical Data

Protection class Module: IP 66 EN/IEC 60529
Terminals: IP 20 EN/IEC 60529
Terminals with cover: IP 30 EN/IEC 60529
Structure Flameproof, clip-on enclosure for TH 35 rail
Dimensions see data sheet
Material High-quality thermoplastic
Storage temperature -40 °C to +60 °C
Weight 2.1 kg
Display LEDs on front panel
Bus status: ON, BF, SF
Inputs: 8 x double LED
LED yellow, sensor active; LED red, open circuit/short circuit
Voltage Supply voltage: DC 24 V (20 to 30 V)
Output power 7.6 W
Power dissipation 5.1 W (Module)

Manuals/Operating Instructions/Guides

Manuals/Operating Instructions/Guides


Data Sheets

Data Sheet – PROFIBUS-Interface 8 x 4 to 20 mA in