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Isolating switching amplifier

2-channel

IM1-22EX-R

The 2-channel IM1-22EX-R isolating switching

amplifier is equipped with intrinsically safe in-

put circuits.

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

or potential-free contact transmitters can be

connected to the device.

The output circuits feature 2 relays, each with

1 NO contact.

Via six switches on the front, you can set the

operating behaviour for each channel sepa-

rately (work or quiescent current behavior, i.e.

NO/NC) as well as switch wire-break (WB)

and short-circuit monitoring (SC) on and off.

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 LEDs 1 and 2

light yellow to indicate the switching status

of the associated output. In the event of an

input circuit error, the 2-color LED of the as-

signed faulty input turns red, with the input cir-

cuit monitoring switched on. Thereupon the

output relay drops out.

■ 2 relay outputs (NO)

■ Output mode adjustable (NO/NC mode)

■ Input circuits monitored for wire-break/

short-circuit (ON/OFF switchable)

■ SIL 2

■ Complete galvanic isolation

■ Input reverse-polarity protected

■ ATEX, IECEx, UL,

C

FM

US

, CSA, TR CU,

NEPSI, KOSHA, TIIS, CCOE, INMETRO

■ Installation in zone 2