Original Mebay DC40D MK3 Replaced By DC40D MK4 Controller Diesel Generator Control Module Genset Parameters LCD Display Monitoring

Original Mebay DC40D MK4 Controller Diesel Generator Control Module Genset Parameters LCD Display Monitoring

This series of controllers is designed for the start, stop, 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 the relevant parameters of the generator set. The LCD screen can simultaneously display multiple current fault states, and can effectively implement protective parking when the generator set is not working properly.

The controller has built-in display interfaces such as 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 controller panel buttons or adjusted and monitored using a PC through a USB or RS485 interface (equipped with some models). It can be widely used in various types of generator set automation systems.

Wide Application Range

Medium silent single diesel generator control cabinet, construction machinery single engine unit, light marine auxiliary genset, off-grid medium independent power supply equipment, generator repair shops and medium power distribution engineering projects that only need standalone genset automatic start-stop function without electronic injection ECU data reading, ATS automatic switching and remote centralized cloud monitoring requirements.

Product Specifications

• Brand: Mebay
• Model: DC40D MK4
• Core Function: Base standalone genset auto start-stop controller, substitute DeepSea DSE5220 MK4 base model, only USB local debugging (No RS485 Modbus, No CAN J1939 ECU bus, No mains AMF sampling)
• DC Power Supply: DC8V~36V universal wide voltage for 12V/24V generator batteries
• AC Sampling: Single generator three-phase voltage and current monitoring, auto 50/60Hz frequency identification
• Communication Interfaces: Front USB Type-B local debug port (No CAN J1939, No RS485 Modbus remote port)
• Display: 3.5-inch colorful TFT multi-language LCD dashboard
• Panel Cutout Size: 160 × 120 mm, overall dimension 189 × 134 × 50 mm
• Weight: 0.68kg
• Front Panel Protection Grade: IP54 dustproof & waterproof with silicone sealing gasket (IP65 with extra rubber gasket)
• Operating Temperature: -25℃ ~ +65℃
• Warranty: 12 months genuine factory warranty
• Certifications: CE, ISO9001, EMC EN55032 IEC61000-4

Common Equipment Failures Solved

• Generator cannot auto start after receiving remote signal: Remote dry contact wiring loose, auto start delay 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
• Need mobile APP remote cloud monitoring: DC40D MK4 without RS485 port, upgrade to DC40DR MK4 model with isolated RS485 Modbus communication
• No engine ECU data display reminder: DC40D MK4 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 DSE5220 MK4 or DC40DR MK4 panel downgrade replacement: DC40D MK4 fully compatible with original installation and wiring, direct cost-saving downgrade replacement