IN485FGL001I000 – Fujitsu to BACnet MS/TP & Modbus RTU Gateway

Fujitsu to BACnet MS/TP & Modbus RTU Gateway. 

The IN485FGL001I000 gateway enables full bi-directional integration between Fujitsu air conditioning systems (RAC and VRF models) and BACnet MS/TP or Modbus RTU networks. Designed for easy installation and commissioning, this communication module connects directly to a single indoor unit and provides remote control and monitoring of essential AC functions, including temperature setpoint, fan speed, operating mode, and system status indicators such as errors or alarms.With its compact design, no need for additional power supply or external configuration software, and support for both major building automation protocols, it is a powerful solution for efficient and scalable HVAC system management in smart buildings. Simply set the DIP switches on the device and plug it into the AC unit – the system is ready to operate within minutes.

Features:

• Supports BACnet MS/TP and Modbus RTU simultaneously
• BTL certification ensures full BACnet interoperability
• Configuration via DIP-switches – no software required
• Plug-and-play installation without external power
• Compact enclosure: 93 x 53 x 58 mm (ideal for DIN rail or internal AC unit mounting)
• Total AC unit control via BACnet/Modbus including advanced features: eco mode, freeze protection, alarms
• Simultaneous use with Fujitsu IR remote control
• Energy efficiency through occupancy-based logic and advanced monitoring
• Reliable RS485 communication with configurable termination and polarization
• Three-year manufacturer warranty included

Specifications:

Enclosure:

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

Low voltage terminal wiring:

• Single core: 0.5–2.5 mm² (24–11 AWG)
• Double core: 0.5–1.5 mm² (24–15 AWG)
• Triple core: Not allowed

Mounting:

• DIN rail, wall, or inside compatible AC indoor units

BACnet MS/TP & Modbus RTU port:

• 1 x EIA-485 terminal block (B, A, SG) with configurable DIP-switch termination (120 Ω)

AC Unit Port:

• 1 x EIA-485 terminal block (B, A, SG)

LED Indicators:

• 2 x Communication status LEDs

DIP-switch configuration:

• SW1: Gateway role, AC model, baud rate
• SW2: Protocol address and temperature units (Celsius/Fahrenheit)
• SW3: Bus polarization and termination

Operating & Storage Conditions:

• Temperature (Op): 0 to +70°C / 32 to 158ºF
• Temperature (St): -20 to 85ºC / -4 to 185ºF
• Humidity: 5%–95%, non-condensing

Electrical:

• Isolation Voltage: 1500 VDC
• Isolation Resistance: 1000 MΩ

Certifications & Compliance:

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

Warranty:

• 36 months

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