The output module AO401Ex is used for the
connection of intrinsically safe analog actuators such as control valves or process indicators.
The module features protection class Ex ib IIC
and can be mounted in zone 1 in combination
with the excom system. The explosion protection category of the outputs is Ex ia IIC resp.
Ex iaD. The outputs

HART-compatible transducers can be connected to the module. The field device can
thus be parametrized directly at the terminals
on the DIN rail with a licensed modem. Additional impedance in the circuit is not necessary.
The host system transmits a digitized control value 0…21000 (independent of the
parametrized measuring range). This raw value is then transformed by the AO401Ex into a
signal between 0…21 mA.

■ Output module for the connection of analog actuators
■ Complete galvanic isolation