GCU-20
Automatic Engine Control Unit
WARNING
Disconnect all electric power to the machine before
installation.
Protection Functions
Engine fail to start
Engine tries 3 times to start
Engine Low Oil Pressure Protection
Shutdown activated after 3 seconds
Oil Pressure Switch Type NO or NC
Auxiliary Shutdown
Shutdown activated after 3 seconds delay by NO contact
Engine High Water temperature Protection
Shutdown activated after 3 seconds delay by NO contact
Engine Over-speed Protection
Shutdown activated after 3 seconds
50 Hz activated at 55 Hz
– 60 Hz activated at 66 Hz
Engine Under-Speed Protection
Shutdown activated after 5 seconds
50 Hz activated at 45 Hz
– 60 Hz activated at 54 Hz
No Speed Signal Present Protection
Shutdown activated after 5 seconds (MPU use only)
Icon Reference Table
ICON
DESCRIPTION
ACTION
Low Oil Pressure Alarm
Auxiliary Alarm (Flashing)
Shutdown
High Water Temperature Alarm
Shutdown
Over Crank Alarm
Shutdown
Wrong speed Alarm
No Speed Signal Alarm (Flashing)
Shutdown
Engine Running Indicator
Engine IDLE Indicator (Flashing)
Engine Pre-Heat Indicator
Pre-Heat
Physical Dimensions
Mounting Pattern
Installing Panel
