GCU10 Automatic Controller Key benefits Reliable microprocessor based control for automatic start stop and monitoring of generator sets. Universal LED graphic interface shows generator status and failure codes for fast troubleshooting. Modular design and quick installation reduce setup time and simplify service and replacement. Programmable engine and generator controls adapt to a wide range of generator sets, including aftermarket replacements. Waterproof front panel with UV protection improves durability in outdoor and harsh environments. Provides idle control for electric governors and multiple configurable outputs for common accessory and safety functions. What it does Manages engine start and stop sequences, safety interlocks, and alarm indication. Monitors alternator input and critical engine signals, and displays protection and alarm status for events such as start failure, low oil pressure, overspeed, underspeed, emergency stop, extra program input, and low battery voltage. Offers user adjustment via five time delay potentiometers and five DIP switches for specification setting. Compatibility and form Part number: GCU10. Compatible with Generator Control Unit installations and suitable as an aftermarket replacement for many generator control applications. Waterproof, UV protected front panel for outdoor use. Modular layout for straightforward wiring and mounting. Key specifications DC supply: 9.0 to 36 VDC Alternator input range: Voltage 5 to 300 VDC; Frequency 50 to 60 Hz Fuel solenoid signal output: 5 Amp at 12 or 24 VDC Warm up signal output: 5 Amp at 12 or 24 VDC Accessory ON output: 5 Amp at 12 or 24 VDC Idle control conductor capacity: 5 Amp at 12 or 24 VDC Power consumption: Under 3 VA on Auto Adjustable timers: Engine preheat: 2 to 30 seconds Starter cranking time: 1 to 15 seconds Energize to STOP: 1 to 15 seconds Engine idle (governor): 0 to 300 seconds Environment: Operation temperature: 20 to 70 C Relative humidity: maximum 90 percent Protection and alarm status indicators: Start failure; Low oil pressure; Overspeed; Underspeed; Emergency stop; Extra program input; Low battery voltage Controls and adjustable features Five adjustable time delay potentiometers allow on site tuning of sequence and timing behavior. Five DIP switches permit configuration for different generator and engine requirements. Programmable logic for engine and generator parameters to match a broad range of equipment. Typical applications Backup power systems for commercial buildings: Controls standby generators to ensure safe automatic start and clear alarm indication during mains failure and restoration. Remote or off grid power installations: Provides robust, weather resistant control and monitoring for prime movers and alternators in outdoor enclosures. Industrial and telecom sites: Integrates with existing generator control units to manage warm up, fuel solenoid, accessory outputs, and idle control for electric governors. Why choose this controller Combines flexible programmability with clear LED status feedback and rugged front panel protection to provide a practical solution for automatic generator control and monitoring. Part number GCU10 offers a compact, modular option for replacement or upgrade of generator control systems.