The IM12-AI01-1I-1IU1R-H… isolating transducers transmit the analog measured signal

in a galvanically isolated manner. In addition,

the devices monitor the input signals for exceeding or falling below an adjustable limit

value. The devices are suitable for operation

in Zone 2. Passive 2-wire transducers, as well

as active and passive HART transmitters, can

be used on the devices.

The IM12-AI01-1I-1IU1R-HPR/24VDC/CC isolating transducer is equipped with input circuits of 4…20 mA and output circuits of 4…

20 mA (either as source or sink) and 1…5 V

(source). Input signals are transmitted in the

3.8 mA…20.5 mA range 1:1 to the output

[A1A] without impairment. Alternatively, the input current signal is provided proportionally

as a normalized voltage in the 1 V…5 V range

(source) at output [A2A]. In addition, digital

signals can also be transmitted bidirectionally

in accordance with the HART protocol.

The input circuit is monitored for wire breaks

and short circuits. Via the Power-Bridge connection, the device can be supplied and a

group fault signal can be transmitted.

The devices are configured via DIP and rotary

coding switches on the device side. The analog output to be used (current output A1A or

voltage output A2A) as well as the switching

point (5…20 mA in 1-mA increments), the effective direction (NC/NO) and the switching

behavior of the relay output (A1D) when exceeding/falling below the set switching point

are adjustable.

The devices have a green power LED (Pwr).

Two red status LEDs are provided to indicate

wire breaks and short circuits, respectively, in the input circuit. A fault in the input circuit causes the red LED to flash according to

NE44. Two yellow status LEDs indicate the

switching status and the set effective direction of the relay output. In the event of a wire

break ( 22 mA) in

the input circuit, a current value of < 3.5 mA

or a voltage value of < 0.875 V is output at the

analog output.

The device can be used in safety circuits up to

SIL 2 (high and low demand according to IEC

61508) (hardware fault tolerance HFT = 0).

The device is equipped with removable

spring-type terminals.

■ Isolating transducer

■ Complete galvanic isolation

■ Input reverse-polarity protected

■ Removable spring type terminals

■ Power bridge (connector incl. in delivery)

■ Use in Zone 2

■ SIL 2