over switch, switching the digital input between plus and minus (ground GND) of the
vehicle electrical system voltage (+9 ... 30V).
If no change-over switch is available, an electric load for example, indicator light or
resistor, between the digital input and ground (GND) or between the digital input and
the vehicle voltage (+9 ... 30V) can offer defined levels.
When using inductive loads, a free-wheeling diode must be used in parallel with the
load.
Wiring the digital output
The digital output OUT of the LINK 710 is an open drain output linking to ground. The
connected load must be connected between vehicle voltage and OUT. Loads
requiring more than 0.35 A must be controlled with relays. If the load requires more
than the maximum output voltage use a 12 V/24 V relay, depending on the operating
voltage.
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