4.3 Digital inputs
All digital inputs are 12/24V DC bi-directional optocoupler type. The typical wiring is illustrated below:
The digital inputs use fixed signals. Only the mode shift input and the test input (if the timer is
used) use pulse signal.
4.4 Charger alternator connections
The charger alternator can be used as running-feedback in two different ways:
1. Using the D+ terminal connected to terminal 12
2. Using the W terminal connected to the RPM input
Usually only one of these possibilities is used.
GCU 100 installation instructions
4189340799 UK
Wiring
DEIF A/S
Page 14 of 31
