Isolating switching amplifier
2-channel
IM1-22EX-T
Edition • 2012-08-16T23:46:10+02:00
1 / 4 TURCK Inc. ñ 3000 Campus Drive Minneapolis, MN 55441-2656 ñ Phone: 763-553-7300 ñ Application Support: 1-800-544-7769 ñ Fax 763-553-0708 ñ www.turck.com
The dual-channel isolating switching amplifier
IM1-22EX-T is equipped with an intrinsically
safe input circuit.
Sensors according to EN 60947-5-6 (NA-
MUR) can be connected to the device or po-
tential-free contactors.
The output circuits feature two potential-free
and short-circuit protected transistors.
Six front panel switches are available to set
the output mode separately for each channel
(NO/NC mode), as well as to enable/disable
wire-break (WB) and short-circuit (SC) moni-
toring separately.
When using mechanical contacts, wire-break
and short-circuit monitoring must be switched
off or the contact must be wired with resistors
(II) (see circuit diagram).
The green LED indicates operational readi-
ness. The switching status of the correspond-
ing output is indicated yellow by the two col-
or LED. In the event of input circuit errors the
dual color LED changes to red, provided the
input circuit monitoring function is activated.
Thereupon the related output transistor is de-
energized.
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Intrinsically safe input circuits Ex ia
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Installation in zone 2
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FM, NEPSI
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SIL2
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Application area acc. to ATEX: II (1) G,
II (1) D; II G 3
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2 transistor outputs
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Adjustable signal flow direction (NO/
NC)
■
Input circuit monitoring of wire-break/
short-circuit (ON/OFF switchable)
■
Removable terminal blocks
■
Galvanic separation of input circuits,
output circuits and power supply
