1. General information
1.1. Warnings, legal information and safety..................................................................................................3
1.1.1. Warnings and notes ......................................................................................................................3
1.1.2. Legal information and disclaimer ..................................................................................................3
1.1.3. Safety issues ................................................................................................................................3
1.1.4. Electrostatic discharge awareness ...............................................................................................3
1.1.5. Factory settings ............................................................................................................................4
1.1.6. UL applications..............................................................................................................................4
1.2. About the installation instructions...........................................................................................................4
1.2.1. General purpose ...........................................................................................................................4
1.2.2. Intended users ..............................................................................................................................4
1.2.3. Contents and overall structure ......................................................................................................4
2. Mounting
2.1. GCU 100 mounting.................................................................................................................................5
2.1.1. Mounting of the unit.......................................................................................................................5
2.1.2. Unit dimensions and panel cutout..................................................................................................5
2.1.3. Tightening torques.........................................................................................................................6
3. Terminals
3.1. Terminal overview and description.........................................................................................................8
3.1.1. Terminal overview .........................................................................................................................8
3.1.2. Terminal Description......................................................................................................................8
4. Wiring
4.1. Wiring diagram.....................................................................................................................................12
4.2. DC connections....................................................................................................................................13
4.3. Digital inputs.........................................................................................................................................14
4.4. Charger alternator connections............................................................................................................14
4.5. GCU wiring diagrams for voltage and current......................................................................................16
4.5.1. GCU 113......................................................................................................................................16
4.5.2. GCU 112......................................................................................................................................20
4.5.3. GCU 111 .....................................................................................................................................24
5. Communication
5.1. Wiring instructions................................................................................................................................28
5.2. CANbus engince communication.........................................................................................................29
5.2.1. Connection with 2-wire shielded cable (recommended)..............................................................29
5.2.2. Connection with 3-wire shielded cable........................................................................................30
5.3. Additional Operator Panel, AOP-2.......................................................................................................31
GCU 100 installation instructions
4189340799 UK
DEIF A/S Page 2 of 31