IN485MIT001I000 – Mitsubishi Electric to BACnet MS/TP Gateway for HVAC Integration

IN485MIT001I000 – Mitsubishi Electric to BACnet MS/TP Gateway for HVAC Integration. 

The IN485MIT001I000 gateway enables seamless and fully bidirectional communication between Mitsubishi Electric air conditioning systems – including Domestic, Mr. Slim, and City Multi – and building automation systems using the BACnet MS/TP protocol. Directly wired to the indoor AC unit, the gateway allows complete control of operating mode, fan speed, temperature setpoint, and provides real-time monitoring of internal variables, system errors, and alarm statuses. No external power supply or configuration software is required – only wiring and DIP switch setup. This plug-and-play approach significantly reduces installation time, making the device ideal for fast integration into BMS or SCADA platforms in commercial, industrial, and residential HVAC applications.

Key Features:

• BTL certified for guaranteed interoperability with BACnet systems
• Supports only BACnet MS/TP networks
• Configuration via onboard DIP-switches – no software needed
• Quick and easy installation with plug-and-configure design
• No external power supply required (powered from the AC unit)
• Simultaneous control via original remote and BACnet MS/TP
• Compact enclosure: 93 × 53 × 58 mm (DIN rail mountable)
• Can be mounted on DIN rail, wall, or inside certain AC indoor units
• Exposes AC unit functions as standard BACnet objects
• Occupancy control feature helps reduce HVAC energy costs
• Provides access to unit runtime, filter maintenance counters, internal status, and error codes

Specifications:

Enclosure:

• Material: PC plastic, UL 94 V-0 compliant
• Dimensions (DxWxH): 93 × 53 × 58 mm / 3.7" × 2.1" × 2.3"
• Color: Light grey (RAL 7035)

Low Voltage Terminal Wiring:

• Supports solid or stranded wires (with or without ferrules)
• Single core: 0.5–2.5 mm² (24–11 AWG)
• Dual core: 0.5–1.5 mm² (24–15 AWG)
• Triple core: not supported

Mounting Options:

• DIN rail (35 mm), wall mounting, or internal AC unit (model-dependent)

Communication Ports:

• BACnet MS/TP: 1 × EIA-485 terminal block (B, A, SG) with 120 Ω termination and DIP-switch configurable polarization
• AC Unit: 1 × RC bus terminal block (A, B)

LED Indicators:

• 2 × Communication status LEDs

DIP Switches:

• SW1 – Gateway mode and baudrate
• SW2 – MAC address and temperature unit selection
• SW3 – Bus termination and polarization

Environmental Conditions:

• Operating temperature: 0 to +70 °C / 32 to 158 °F
• Storage temperature: –20 to +85 °C / –4 to 185 °F
• Humidity (operating & storage): 5% to 95% RH, non-condensing

Electrical Isolation:

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

Certifications & Standards:

• BTL-certified BACnet device
• CE-compliant (EMC Directive 2014/30/EU, Low Voltage Directive 2014/35/EU)
• Standards: EN 61000-6-3, EN 61000-6-2, EN 62368-1
• RoHS 2 compliant (Directive 2011/65/EU)

Warranty:

• 36 months (3 years)

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