User's Manual

Connecting the logger and installing it on-site
24
4.1.4 Connecting devices to the switching Inputs / Outputs
The switching input / output connections and the external power supply are established
via the VK76 connection cable attached to the DC ext. socket .
One end of the cable is uncoated and ten colour-coded wires stick out of it. According to
its colour, each of these wires represents a specific input / output of the logger and can
be directly connected to the respective terminal of a peripheral device.
The VK76 connection cable has the following pin assignment:
Wire Description
white
Switching Input 1 An alarm-triggering device with a voltage output of
0 … 5 V can be connected between a switching input
and the purple wire (GND).
green
Switching Input 2
brown
Relay 1 OUT An electric circuit with an external DC power supply up
to 12 V / 1 A can be connected to each switching
output. If an internal relay is triggered by an alarm
event, the respective circuit is closed and the
connected load is activated / triggered.
yellow
Relay 2 OUT
pink
Relay 1&2 IN
red
External power
supply
An external power supply with 12 V DC can be
connected between this wire and the purple wire
(GND). The internal battery cannot be charged by an
external power supply.
purple
GND
grey
not used
blue
not used
black
not used
If no adequate terminals are existent, a luster terminal or other accessories can be used
to connect a peripheral device. A proper electrical insulation must be ensured.
Make sure that the guide on the plug of the VK76 cable fits in the groove in the
DC ext. socket and that you feel the plug latch in.
red
(to be connected to
DC ext.)