Original Mebay DC42DR MK3 Generator Set Controller Replaced By DC42DR MK4 Genset Parameters Monitoring

Original  Mebay Generator Set Controller DC42DR MK3 Genset Parameters Monitoring

This series of controllers is specially designed for starting, stopping, parameter monitoring and fault monitoring of diesel, gasoline, and gas generator sets and has parameter setting functions.

This controller uses a 3.0-inch large-screen dot matrix LCD to display relevant parameters of the generator set. The LCD screen can display multiple current fault states at the same time, and can effectively implement protective shutdown when the generator set is not working properly.

The controller has built-in display interfaces in Simplified Chinese and English, and the language interface can be customized according to customer requirements. All parameters of the controller can be adjusted through the buttons on the controller panel or adjusted and monitored using a PC through USB or RS485 interface (equipped with some models). It can be widely used in various types of generator set automation systems.

Wide Application Range

Small silent single diesel generator control cabinet, household / small commercial building backup AMF genset, small data room standby power, light marine auxiliary genset, off-grid small independent power supply equipment, generator repair shops and small power distribution engineering projects that only need ATS automatic switching + remote centralized cloud monitoring without electronic injection ECU data reading requirements.

Product Specifications

• Brand: Mebay
• Model: DC42DR MK3
• Core Function: Upgraded small AMF auto mains failure single genset controller with isolated RS485 remote communication, substitute DeepSea DSE4120 base model, support local USB debug + remote cloud monitoring (No CAN J1939 ECU bus)
• DC Power Supply: DC8V~36V universal wide voltage for 12V/24V generator batteries
• AC Sampling: Dual-way mains+generator three-phase voltage simultaneous monitoring, auto 50/60Hz frequency identification
• Communication Interfaces: Front USB Type-B local debug port + Rear isolated RS485 Modbus remote port (No CAN J1939 ECU bus)
• Display: 3-inch backlight segment LCD dashboard
• Panel Cutout Size: 112 × 88 mm, overall dimension 130 × 105 × 45 mm
• Weight: 0.68kg
• Front Panel Protection Grade: IP54 dustproof & waterproof with silicone sealing gasket
• Operating Temperature: -20℃ ~ +65℃
• Warranty: 12 months genuine factory warranty
• Certifications: CE, ISO9001, EMC EN55032 IEC61000-4

Common Equipment Failures Solved

• Generator cannot auto start after mains power loss: Mains voltage sampling wiring loose, AMF delay start parameter misconfigured
• Laptop cannot connect controller for parameter modification: Use SG72A USB communication adapter, install official Mebay configuration software
• Onboard relay burned when driving glow plug: Onboard contact capacity limited to 5A, install external Hongfa HAT700BI 70A heavy relay for current amplification
• No remote monitoring function reminder: DC42DR built-in RS485 port, compatible with DT1000 DTU to realize full cloud remote management
• No engine ECU data display reminder: DC42DR MK3 model has no CAN J1939 bus, select DC72DR MK2 if electronic injection ECU reading function is required
• Frequent low oil pressure / high water temperature alarm: SGPT110 pressure/temperature sensor damaged or threshold parameter misadjusted
• Old DSE4120 or DC42D MK3 panel upgrade replacement: DC42DR MK3 fully compatible with original installation and wiring, direct upgrade and replacement