Original Mebay DC42DR-ABF MK4 MK4 Genuine Generator Controller ABF Genset AMF Control Module

Wide Application Range

Commercial building backup power genset cabinet, factory critical load standby power distribution box, marine three-phase auxiliary power unit, large silent diesel generator control panel, grid-connected off-grid industrial power station, hospital/data center emergency power supply, generator factory complete cabinet assembly, generator retrofit maintenance project, direct replacement for imported DSE4520 HGM420 ATS control panels.

Product Specifications

• Brand: Mebay
• Model: DC42DR-ABF MK4
• Core Function: MK4 32-bit dual-core AMF ATS genset controller, exclusive ABF anti-backfeed reverse power protection, isolated RS485 Modbus remote communication + USB debug, full 3-phase power & mechanical engine monitoring (No CAN J1939, mechanical pump engine only)
• Working Power Supply: DC8V ~ 36V universal 12V/24V genset battery wide voltage
• Sampling Standard: 1P2W/2P3W/3P4W auto-adaptive mains & generator AC sampling, 5A CT current transformer matching
• Communication Interfaces: Rear isolated RS485 A/B Modbus RTU port + onboard USB debug port (No CAN J1939 ECU bus)
• Display: 3.0-inch 128×64 multi-language high-resolution LCD screen
• Panel Cutout Size: 160 × 120 mm, overall dimension 189 × 134 × 50 mm
• Front Panel Protection Grade: IP65 industrial dustproof & waterproof with silicone sealing gasket (MK4 upgraded)
• Operating Temperature: -25℃ ~ +65℃
• Warranty: 12 months genuine factory warranty
• Certifications: CE, ISO9001, EMC EN55032, RoHS

Common Equipment Failures Solved

• LCD no screen after power on: Check DC battery positive/negative wiring looseness, confirm DC8-36V normal voltage range
• ATS fails auto start when mains lost: Verify AUTO mode activated, re-calibrate mains voltage detection threshold
• Reverse power fault alarm frequently triggered: Adjust ABF anti-backfeed threshold parameter via USB software or RS485 remote setting
• PC cannot connect via USB cable: Confirm USB driver installation, check cable wiring integrity
• Remote DT1000 no data upload: Match Modbus baud rate & communication address between controller and DTU module
• Cannot read EFI engine ECU fault codes: DC42DR-ABF MK4 has no CAN bus, upgrade to DC42CR MK4 for electronic injection engines
• No demand for anti-reverse power protection: Replace with standard DC42DR MK4 model without ABF function
• Need independent power kWh display: Match GV59R 3-phase multi-function power meter for separate energy statistics