IN485MHI001R000 – BACnet MS/TP Gateway for Mitsubishi Heavy Industries HVAC

IN485MHI001R000 – BACnet MS/TP Gateway for Mitsubishi Heavy Industries HVAC. 

The IN485MHI001R000 is a professional communication gateway designed to integrate Mitsubishi Heavy Industries Sky and VRV air conditioning systems with BACnet MS/TP networks. It connects directly to the indoor unit, enabling full bidirectional control and monitoring. Users can access key AC functions such as operating mode, fan speed, and temperature setpoint, while also retrieving internal data like alarms, fault codes, and runtime metrics. Installation is fast and intuitive—simply wire the device to the unit and configure via DIP switches. No external power supply or setup software is needed.

This gateway stands out for its ease of use, compact size, and robust protocol compatibility. It simplifies the integration of HVAC systems into BMS (Building Management Systems) or SCADA platforms. Ideal for both retrofits and new installations, it helps optimize energy usage and operational efficiency. Its occupancy function adds an intelligent layer of control to reduce HVAC costs in commercial buildings.

Features:

• BTL certified for full interoperability with BACnet systems
• Supports BACnet MS/TP only
• Fast configuration using DIP switches – no PC needed
• Quick, plug-and-play installation
• No external power supply required
• Simultaneous control via original remote and BACnet MS/TP
• Compact size: 93 x 53 x 58 mm
• DIN-rail, wall, or indoor unit mounting supported
• Exposes AC unit functions as fixed BACnet objects
• Occupancy logic for energy-saving HVAC automation
• Real-time monitoring of internal AC data, error codes, and maintenance indicators

Specifications:

Enclosure:

• Plastic housing (PC UL 94 V-0 rated)
• Dimensions (DxWxH): 93 x 53 x 58 mm / 3.7 x 2.1 x 2.3 inches
• Color: Light grey (RAL 7035)

Terminal wiring for low voltage signals:

• Compatible with solid or stranded wires (twisted or with ferrule)
• 1 wire: 0.5 to 2.5 mm² (24–11 AWG)
• 2 wires: 0.5 to 1.5 mm² (24–15 AWG)
• 3 wires: not permitted

Mounting options:

• DIN rail
• Wall
• Inside indoor units (model-dependent)

BACnet MS/TP port:

• 1 x EIA-485 3-pin pluggable terminal (B, A, SG)
• 120 Ω termination and polarisation via DIP switch

AC unit port:

• 1 x RC bus pluggable terminal block (A, B)

LED indicators:

• 2 x communication status LEDs

DIP switch configuration:

• SW1 – Gateway role and baud rate
• SW2 – MAC address and temp unit (°C/°F)
• SW3 – Bus termination and polarity

Operating & storage conditions:

• Temperature (Celsius): 0–70°C (Op), -20–85°C (Storage)
• Temperature (Fahrenheit): 32–158°F (Op), -4–185°F (Storage)
• Humidity: 5% to 95%, non-condensing

Electrical isolation:

• Isolation voltage: 1500 VDC
• Insulation resistance: 1000 MΩ

Certifications & Standards:

• BACnet Certified
• CE compliance (EMC: 2014/30/EU, LVD: 2014/35/EU)
• EN 61000-6-2 / EN 61000-6-3 / EN 62368-1
• RoHS 2 (2011/65/EU) compliant

Warranty: 36 months

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