IN770AIR00MO000 – Multi-brand AC Interface for Mitsubishi Electric with KNX, Serial and IP, 64 indoor units

IN770AIR00MO000 – Multi-brand AC interface with Modbus, KNX, Serial and IP integration. 

The IN770AIR00MO000 is a universal multi-brand HVAC gateway designed for integrating VRF and multi-split systems from leading manufacturers such as BOSCH, Daikin, Hisense, Hitachi, Midea, Mitsubishi Electric, Panasonic and Samsung with building automation platforms through KNX, Modbus RTU/TCP and open ASCII/IP. It offers full two-way control, monitoring and data acquisition from indoor and outdoor units, making it suitable for commercial, industrial and large-scale residential automation.

A key architectural characteristic of this device is that it operates as a Central Controller on the native AC communication bus. Because most VRF buses allow only one Central Controller to be connected at a time, the gateway must be the only controller on the line. If another Central Controller must coexist in the same installation, an XYE Extension Kit is required to ensure compatibility and proper multi-controller operation.

The interface automatically adapts its behaviour to the connected AC brand. It supports multi-indoor and multi-outdoor topologies with brand-specific limits and dedicated terminal types. This flexibility makes the device a powerful, vendor-independent integration layer for BMS, SCADA and PLC systems.

Brand-specific capacities & bus connections

• BOSCH: up to 64 indoor units — connected via XYE terminals
• Daikin: up to 64 indoor units and 10 outdoor units — connection via F1/F2 terminals
• Hisense: up to 64 indoor units and 64 outdoor units — connection via AB (H-Link)
• Hitachi: up to 64 indoor units and 64 outdoor units — connection via AB (H-Link)
• Midea: up to 64 indoor units — connection via XYE terminals
• Mitsubishi Electric: up to 100 VRF groups — connection through Mitsubishi Electric Centralized Controller bus
• Panasonic: up to 64 indoor units and 32 outdoor units — connection via U1/U2 (P-Link)
• Samsung: up to 64 indoor units and 16 outdoor units — connection via R1/R2 terminals

The gateway supports simultaneous Modbus TCP and Modbus RTU communication, with up to 6 concurrent TCP clients. This ensures full compatibility with complex BMS and supervisory systems requiring parallel access to HVAC data. The device exposes a comprehensive data model including alarms, status variables, temperatures, setpoints and full indoor/outdoor unit operation values.

System commissioning is simplified with Intesis MAPS, which provides configuration, diagnostics, real-time bus monitoring and firmware updates. The unit includes Ethernet, RS485, KNX and USB console connectivity, making it highly adaptable for both distributed and centralised automation environments.

Key features

• Support for up to 100 Mitsubishi Electric VRF groups
• Simultaneous operation with Modbus RTU and Modbus TCP
• Up to 6 TCP clients can connect at once
• Automatic scanning of indoor units on VRF system
• Energy consumption and outdoor unit data exposed
• KNX TP interface and open ASCII protocol for IP integration
• Direct Ethernet port for seamless LAN integration
• Fast setup and firmware upgrades via Intesis MAPS or USB
• LED indicators for diagnostics and communication status
• Robust DIN rail or wall mounting, IP20-rated housing

Specifications

Enclosure:

• Plastic, PC (UL 94 V-0)
• Dimensions: 90 × 106 × 58 mm
• Installation space: 130 × 115 × 100 mm
• Color: Light Grey (RAL 7035)

Mounting:

• Wall mount: M3 screws (25 mm)
• DIN rail EN60715 TH35

Terminal wiring:

• 1 core: 0.5–2.5 mm² (24–11 AWG)
• 2 cores: 0.5–1.5 mm² (24–15 AWG)
• 3 cores: not permitted
• Use class 2 cables for distances > 3.05 m

Power supply:

• Green 3-pole terminal block
• 12–36 VDC ±10 %, max. 250 mA
• 24 VAC ±10 %, max. 127 mA (recommended: 24 VDC)

Ethernet:

• 1 × Ethernet 10/100 Mbps RJ45

Port EIA-485:

• 1 × 3-pole terminal block, 1500 VDC isolation

KNX port:

• 1 × orange 2-pole plug-in block (A, B)

AC ports:

• AC Port A: Serial 2 poles
• AC Port B: Serial 3 poles
• AC Port C: Serial 2 poles
• (Not used for this integration)

LED indicators:

• Run (Power/Error), EIA-485 Tx/Rx, KNX Tx/Rx
• Ethernet Link/Speed, AC Ports A/B/C Tx/Rx
• Button status

Binary inputs:

• 4-pole terminal block (I1, I2, I3, Common)
• 1500 VDC isolation

Console port:

• Mini USB Type-B 2.0, 1500 VDC isolated

Environmental:

• Operating temperature: 0 °C to +60 °C
• Humidity: 5–95 %, non-condensing
• Protection: IP20 (IEC60529)

Warranty: 36 months

For driver downloads, integration examples or firmware support, contact our experts via this form.