User Documentation

Purpose of the product
8 1485600000/01/11.2017
4. Purpose of the product
The ACT20X-HDI-SDO-RNC and ACT20X-HDI-SDO-RNO is a one channel, the ACT20X-2HDI-2SDO-RNC
and ACT20X-2HDI-2SDO-RNO is a two channel pulse isolator for transmission of signals to the safe area
from NAMUR sensors and mechanical switches installed in the hazardous area.
The device can be mounted in the safe area and in Zone 2 / Division 2 and receive signals from Zone 0, 1, 2,
20, 21, 22 and mines or Class I/II/III, Division 1, Group A-G. Error events, including cable breakage, are
monitored and signaled via the individual status relay. The ACT20X-(2)HDI-(2)SDO-RNx has been designed,
developed and certified for use in SIL 2 applications according to the requirements of IEC 61508.