The output module DO401Ex is used for the

connection of intrinsically safe actuators such

as valves or indicator lights.

The module features protection class Ex ib IIC

and can be mounted in zone 1 in combination

with excom®. Explosion protection category is

Ex ia IIC. The outputs are galvanically isolated

from each other.

One actuator per channel can be connected.

The choice of connection enables two intrinsically safe circuits with different Ex-data per

channel.

Please see the load curve for the valve control values. Please refer to the Ex-approval of

the valve manufacturer for the admissible limit

values. The following values are supported for

example:

■ 22.5 V / 5 mA

■ 19.0 V / 15 mA

■ 16.0 V / 25 mA

■ 14.0 V / 35 mA

■ 12.0 V / 45 mA

■ Output module for intrinsically safe actuators

■ Complete galvanic isolation