Model MGC120 Generator Controller Color code MGC120 Overview The MGC120 is an AMF module designed for automation and monitoring of a single gasoline generator set. It delivers automatic start and stop, alarm protection, and ATS switching control through measured data and programmable logic. The controller combines a clear LED digital tube display with touchbutton operation, frontpanel parameter adjustment, and PC configuration via the LINK port. Its compact, modular design and durable materials make installation straightforward and operation reliable. Key benefits Reliable automatic control of a single gasoline generator set with AMF functionality. Easy configuration from the front panel or remotely from a PC via LINK and SG72 adapter. Clear status and alarm indication using LED digital tube and LED indicators. Robust front panel and buttons made of silicone to withstand extreme temperatures. Compact, embedded installation design in antiflaming ABS housing for spaceefficient mounting. Core features Measurement and compatibility: collects singlephase mains and generator voltage; compatible with 50 Hz and 60 Hz AC systems. Displayed and switchable parameters: mains voltage, generator voltage, engine cylinder temperature, generator frequency, battery voltage, and accumulated running time in hours. Automatic mains monitoring and AMF operation for automatic transfer and generator control. Protections and alarms: under and over voltage, under and over frequency, low oil pressure, and start failure; LED indicators identify alarm types and controller initiates shutdown protection when needed. Crank disconnect selection: choose from generator frequency, engine speed, or combined speed plus generator frequency for crank disconnect logic. Speed sensing: speed input derived from ignition coil primary; a diode must be installed in series with the speed signal. Air flap control: stepper motor output and programmable outputs to control air flap position. Inputs and outputs: 2 digital inputs with default assignments: remote start input and low oil pressure input. 3 stationary relay outputs: fuel output, start output, and ignition control. 2 programmable transistor outputs configurable as common alarm output, ETS control, idle speed control, preheating control, GCB close output, MCB close output, or air flap blocking output. Communication and configuration: LINK communication port supported by SG72 adapter enables controller parameter setting, remote monitoring and control, and firmware upgrades. Construction and protection: hard acrylic screen protection, silicone panel and buttons, modular internal layout, antiflaming ABS plastic housing, and embedded installation format. Practical applications Standby power for small commercial premises: use the MGC120 to automate start and transfer functions between mains and a gasoline generator during power interruptions, with configurable alarms and shutdown protection to safeguard the engine. Remote or unattended sites: ideal for cabins, telecom shelters, or temporary worksites where remote monitoring and parameter adjustment via LINK and SG72 adapter reduce the need for onsite intervention. Equipment integration for light industrial use: integrate the controller into a generator automation panel to provide reliable start, stop, and protection logic while managing air flap and idle speed functions. Technical notes Model: MGC120 Generator Controller Speed signal sourcing requires a diode in series with the ignition coil primary. LINK port requires SG72 adapter for PC configuration and firmware upgrades. The controller supports singlephase voltage measurement and is compatible with both 50 Hz and 60 Hz systems. What this controller solves The MGC120 centralizes generator automation functions into a single compact module. It reduces manual intervention through automatic start/stop and ATS control, provides clear alarm reporting and protective shutdowns to prevent engine damage, and enables remote configuration and monitoring to simplify maintenance and tuning. Its programmable outputs allow flexible integration with engine and switchgear accessories, making it suitable for a variety of gasoline generator applications.