The IM12-CD01-2R-1U-0/L/CC one-channel relay coupler is designed for safe galvanic isolation between contact and control circuits. The device also enables the creation of

safety-related applications up to and including SIL3 (high and low demand in accordance

with IEC 61508).

The relay coupler is equipped with two

synchronously controlled relay outputs

(changeover contacts). The input signals are

interpreted as low or high signals depending

on the input level, and provided as a corresponding output signal. The inputs are not polarized. Input E1 controls output A1 and output A2 simultaneously. The device is powered

through the input signal (loop-powered).

The switching status of the output is indicated

by two yellow LEDs (Rel…).

If applied in SIL-3 circuits, the following conditions have to be observed:

■ If the output relay triggers a contactor directly: Equip the contactor with protective

circuitry at the coil.

■ Connect both relays in series.

■ Equip the output relay with a fuse that is

activated when 60% of the nominal current

is achieved.

The device is equipped with removable spring

type terminals.

■ The inputs are not polarized

■ Input E1 activates both outputs simultaneously

■ NE load connection: SIL 3 Safety Function

for NE (Normally Energized) load (de-energized in safe state) is available

■ ND load connection: SIL 3 Safety Function

for ND (Normally De-Energized) load (energized in safe state) is available

■ Complete galvanic isolation

■ Input reverse-polarity protected

■ Removable spring type terminals

■ ATEX use in Zone 2

■ SIL 3