4 x digital out Ex i/8 x digital in Ex i

PROFIBUS-Interface for zone 1/21
  • 4 Ex i valves
  • 8 Ex i inputs DIN EN 60947-5-6
  • Galvanic isolation
  • LED display
  • Ex ia/ib
  • Programmable address on front panel


With the MODEX 4 x digital out Ex i/8 x Ex i digital in, it is possible to control 4 Ex i valves while simultaneously importing NAMUR limit switches via 8 digital intrinsically safe inputs. The statuses of the control and end position signals are displayed using LEDs. The output on the short-circuit proof outputs will be switched off automatically by temperature monitoring in the event of a shortcircuit (short-circuit proof). The controlled actuators can be switched off by an emergency stop via a second power supply connection on the module on terminals U- and U+. 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
Status: ON, BF, SF, U2
Inputs: 8 x double LED
LED yellow, damped; LED red, open circuit/short circuit
Outputs: 4 x double LED
LED yellow, active; LED red, short circuit
Voltage Supply voltage (L+, L-): DC 24 V (20 to 30 V)
Output power 6.5 W
Power dissipation 4.5 W (Module)

Manuals/Operating Instructions/Guides

Manuals/Operating Instructions/Guides

Data Sheets

Data Sheet – PROFIBUS-Interface 4 x digital out Ex i/8 x digital in Ex i