Sicherheitshandbuch – Trennschaltverstärker
3 Description of the analyzed modules
The Isolating Switching Amplifiers IM1-**(Ex)-* and MK13-R-Ex0 consist of intrinsically safe
input circuits.
They can be connected to sensors according to EN 60947-5-6 (NAMUR), variable resistors or
potential-free contacts.
The output circuits, galvanically isolated from the input circuits, consist of either relay outputs or
transistor outputs.
Figure 1: Block diagram of the Isolating Switching Amplifier IM1-22Ex-R
Figure 2: Block diagram of the Isolating Switching Amplifier IM1-22Ex-T
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