DIN-Rail Bracket M7xx series modules
Loop isolation module. System Sensor Protocol
Provides monitoring and isolation of short circuits on the loop.When a short circuit is detected, or if power is removed from the module, a 2.2KΩ resistor is placed into the positive side of the loop to provide isolation of the fault. The M200XE has a bi-colour (Green/Yellow) LED. In normal conditions, the LED will blink green each 3 seconds. When a short circuit is detected, either on the input or the output side, the LED will be be lit steady yellow.