Wiring The Outputs - W&T IP-Watcher 2x2 Digital PoE Manual

W&T
If you need to use the inputs for monitoring the states of po-
tential-free contacts, the supply voltage for the unit can also
be used as the signal voltage. In this case you need to operate
the IP-Watcher with a DC voltage of 12V-30V.

2.4 Wiring the outputs

The two IP-Watcher outputs are current sourcing. The supply
voltage for the outputs may be between 6V and 30V DC and is
fed through the terminals Vdd and GND in the output terminal
area. The maximum switching current per output is 500mA.
When the outputs are switched using an inductive load (e.g. a
relay), a snubber diode should be used to protect them from
damage.
The outputs also have thermal overload protection and are
short-circuit protected.
-
e.g. 24V
+
~
e.g. 18V
~
Output wiring with separate power supply
When sizing the output supply voltage, the required current
should be taken into account. If the device is powered by a 12V-
30V external power supply whose capacity is also sufficient for
supplying the consumers connected to the outputs, the output
supply may likewise be connected to the device supply.
The range of the device supply voltage exceeds the
1
range of the switchable output voltage. Use the device
12
IP-Watcher 2x2 Digital PoE