Mitsubishi Electric MELCOBEMS MINI (A1M) BEMS Interface

Compact Modbus RTU & BACnet MS/TP Gateway for Individual HVAC systems

Furthermore, integrate Mitsubishi Electric HVAC systems with third-party BEMS through the Mitsubishi Electric MELCOBEMS MINI (A1M) Interface.Additionally, direct communication is enabled between an indoor/outdoor unit and an RS485 BEMS network.Moreover, the unit supports Modbus RTU and BACnet MS/TP from a single platform.

Ideal for commercial offices across the UK. MELCOBEMS MINI supports temperature control and fault reporting. Mitsubishi Electric’s MELCOBEMS MINI provides full operational monitoring without requiring complex external power supplies.

• Dual Protocol Compatibility: Supports both Modbus RTU and BACnet MS/TP over standard RS485 serial communication, allowing easy connection to leading BEMS networks (including Trend, Siemens, Schneider, and Tridium).

• One-to-One Direct Control: Connects directly to a single indoor unit or flow temperature controller via the internal CN105/CN92 IT terminal connection.

• No External Power Supply Required: Power is drawn directly from the connected indoor unit’s PCB via the supplied cable, simplifying installation and wiring.

• Full Monitoring & Command Capability: Allows BEMS control over On/Off state, Mode (Heat/Cool/Fan/Dry), Temperature Setpoints, Fan Speed, Airflow Vanes, and Lock/Prohibit functions.

• Energy Data & Diagnostics: Access operational data including room temperature readings, fault codes, error status, and energy usage metrics.

• Versatile Equipment Compatibility: Compatible with M Series split systems, Mr Slim, City Multi VRF indoor units, Lossnay heat recovery ventilation, and Ecodan heat pump controllers (FTC4/FTC5/FTC6)