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Input modules

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The module is used for galvanically isolated intrinsically safe connection of devices and sensors with a discrete output of the "dry contact" type, as well as data reception from instruments with a pulse (frequency) output.

Discrete input extension module

Purpose:

The module is used for galvanically isolated intrinsically safe connection of devices and sensors with a discrete output of the "dry contact" type, as well as data reception from instruments with a pulse (frequency) output.

The input's operation mode is configured as needed. Two modes are provided:

    • Level (for connection of "dry contact" sensors);

    • Counting (for receiving pulse\frequency signals).

Configurations:

Module configuration Number of inputs

Galvanic isolation of inputs

MRD-4 4 no
MRD-8 8 no
MRD-4 with galvanic isolation 4 yes
MRD-8 with galvanic isolation 8 yes

Analogue input extension module

Purpose:

The module is used for a galvanically isolated spark-proof connection of devices and sensors with analogue outputs of the following types:

  • Current loop;
  • Potential output;
  • Resistive output.

 

The analogue-to-digital converter provides measurement of input quantities with the standard accuracy of ± 1%, or with increased accuracy of ±0.2%.

Configurations:

Module configuration Accuracy

Number of inputs

Galvanic isolation of inputs

MRA-2 ±1% 2 no
MRA-4 ±1% 4 no
MRA-2 with galvanic isolation ±1% 2 yes
MRA-4 with galvanic isolation ±1% 4 yes
MRA-2 increased acc. ±0.2% 2 no
MRA-4 increased acc. ±0.2% 4 no
MRA-2 increased acc., with galv. isolation ±0.2% 2 yes
MRA-4 increased acc., with galv. isolation ±0.2% 4 yes
You can order the input modules from  dealers  at a good price.

Characteristics

 Digital module extension interface 

Discrete input extension module

Analogue input extension module

Number discrete /analogue of inputs

3 up to 8 up to 4
Ambient air temperature:

-30 °С ≤ t ≤ +50 °С

Characteristics:
– overall dimensions, not more than
– weight, not more than

-55x95х60 mm

- 0.2 kg

In box:

-345x311х117.5mm 

-not more than 5.5 kg

Certificate of type approval (RUS)

Certificate of type approval - Kazakhstan (RUS)

Certificate of type approval - Kyrgyzstan (RUS)

Certificate of type approval - Turkmenistan (RUS)

Certificate of type approval - Uzbekistan (RUS)