Input Supervision; Figure 16. Input - Supervised For Open - Mircom TX3 Series Installation Manual

3.6.2 Input 2: General purpose
By default, Input 2 is configured as a general purpose input.
3.7

Input Supervision

The input's active state can be configured as either Open or Close. The default
is Close.
There are some restrictions in configuring the active state depending on what
kind of supervision is required.
Each input can be configured for a specific type of supervision as follows:
•
•
•
•
3.7.1 No supervision
When the input is configured for no supervision, the active state is either Open or
Close. No end of line resistor is required in this case.
3.7.2 Supervised for open
When the input is supervised for open, the active state in the Configurator is
Close. This scheme requires a single 47 kΩ end of line resistor.
Note:
TX3 Nano Installation Manual
20
Copyright 2018
No supervision
Supervise for open
Supervise for short
Supervise for open and short
Active when short
47 K ohms

Figure 16. Input - Supervised for Open

The switch's active state cannot be an open state.
Wiring