11
W&T
IP-Watcher 2x2 Digital PoE
The factory default setting for the IP-Watcher on the network
side is for Auto-Negotiation. Data transmission speed and
duplex procedure are automatically negotiated with the
connected switch/hub and set appropriately.
The network connection is galvanically isolated to 1kV with
respect to the power supply as well as the digital IOs.
Thanks to the integrated Power over Ethernet technology, the
device can be supplied with the necessary operating voltage
through the network connection.
2.3 Wiring the inputs
The permitted input voltage range is +/-30V with respect to
reference ground.
The switching threshold of the inputs is 8V +/-1V. Lower
voltages are recognized as an OFF or 0 signal. Voltages higher
than 8V are evaluated by the IP-Watcher as an ON or 1 signal.
Input voltages between 7V and 9V should be avoided, since
their meaning may be ambiguous.
The following wiring example shows how two inputs are
controlled. It is important that both signals have the same
reference ground.
Pow
er
Netw
or
k
Status
Error
Outputs Vdd GND Inputs
1 2 + - 1 2
Vcc
AC/DC
e.g. 24V +-
e.g. 18V ~
~
Controlling the two digital inputs
