
18
18
Z21
®_
Detector X16
Z21
®
Connecting the Z21
®
- Detector X16 to the Track System
Switching tracks or dry reed contact
The simplest form of the occupied detector is the use of dry reed contacts or switching tracks that are
earth-switched. A generation of an occupied message is only possible if a2,2kohm resistor (not included)
is activated between the detector input and the switching element. Should the resistance be too low, the
track voltages is burdened unnecessarily or the module or resistance respectively are damaged.
Current sensor
With this method, the feedback devices measure the current that is flowing through the track section. This
results in each of the current consumers generating an occupied message for this section.
8010819920 .indd 18
07.01.2019 09:38:56