Hans Turck GmbH & Co.KG ñ D-45472 Mülheim an der Ruhr ñ Witzlebenstraße 7 ñ Tel. 0208 4952-0 ñ Fax 0208 4952-264 ñ more@turck.com ñ www.turck.com1 / 4

Isolating switching amplifier

1-channel

IM1-121EX-R

The 1-channel IM1-12EX-R isolating switching

amplifier is equipped with an intrinsically safe

input circuit.

Sensors according to EN 60947-5-6 (NAMUR)

or potential-free contact transmitters can be

connected to the device.

The output circuit features 2 relays each with

an NO contact, one of which works as an

alarm output.

You can toggle between working or closed

current, i.e. NO or NC mode, via three switch-

es at the front. The switching state of channel

1 is thereby transmitted to output 1.

When using mechanical contacts, wire-break

and short-circuit monitoring must be switched

off or the contacts must be wired to resistors

(II) (see circuit diagram).

The Pwr LED lights green to indicate opera-

tional readiness. The 2-color LED 1 lights yel-

low to indicate the switching status of the out-

put. In the event of an input circuit error, the 2-

color LED turns red, with the input circuit mon-

itoring switched on. Thereupon the output and

the alarm relay drop out.

■ 2 relay outputs (NO)

■ Output mode adjustable (NO/NC mode)

■ Common alarm output

■ Input circuits monitored for wire-break/

short-circuit (ON/OFF switchable)

■ SIL 2

■ Complete galvanic isolation

■ Input reverse-polarity protected

■ ATEX, IECEx, cUL, cFM, CSA, TR CU,

NEPSI, KOSHA, TIIS, CCOE, INMETRO

■ Installation in zone 2