The 2-channel IM1-22EX-R isolating switching
amplifier is equipped with intrinsically safe input 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 separately (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 operational 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 assigned faulty input turns red, with the input circuit 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, CFMUS, CSA, TR CU,
NEPSI, KOSHA, TIIS, CCOE, INMETRO
■ Installation in zone 2