Truck IM1-22Ex-R Isolating Switching Amplifier

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Truck IM1-22Ex-R Isolating Switching Amplifier Details

Part NumberIM1-22Ex-R
Nominal voltageUniversal voltage supply unit
Frequency40-70 Hz
Input circuit monitoringon/off switchable
Test voltage2.5 kV


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
Type designation IM1-22EX-R Ident no. 7541231 Nominal voltage Universal voltage supply unit Operating voltage 20…250 VAC Frequency 40…70 Hz Operating voltage range 20…125 VDC Power consumption ð 3 W Power dissipation, typ. ð 0.98 W NAMUR input NAMUR EN 60947-5-6 Input circuit monitoring on/off switchable No-load voltage 8.2 VDC Short-circuit current 8.2 mA Input resistance 1 kò Cable resistance ð 50 ò Switch-on threshold 1.75 mA Switch-off threshold 1.55 mA Wire breakage threshold ð 0.06 mA Short-circuit threshold ï 6.4 mA Output circuits (digital) 2 x relays (NO) Output switching voltage relay ð 30 VDC / ð 250 VAC Switching current per output ð 2 A Switching capacity per output ð 500 VA/60 W Switching frequency ð 10 Hz Contact quality AgNi, 3µ Au Galvanic isolation Test voltage 2.5 kV Important note For Ex-applications the values specified in the corresponding Ex certificates (ATEX, IECEx, UL, etc.) apply. Ex approval acc. to conformity certificate TÜV 04 ATEX 2553 Application area II (1) G, II (1) D Ignition protection category [Ex ia Ga] IIC; [Ex ia Da] IIIC Ex approval acc. to conformity certificate TÜV 06 ATEX 552968 X Application area II 3 G Ignition protection type Ex nA nC [ic Gc] IIC/IIB T4 Gc Characteristic linear Important note If the device is used in applications to achieve functional safety according to IEC 61508, the safety manual must be used. Information in the data sheet are not valid for functional safety. Approval SIL 2 acc. to EXIDA FMEDA Use in SIL safety circuits SIL 2 acc. to IEC 61508 Indication Operational readiness green Switching state Yellow State/ Fault 2 × yellow/red Error indication red 

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