INBACSAM004O000 – Gateway Integrating Samsung NASA VRF with BACnet IP/MS/TP for 4 Units

INBACSAM004O000 – Samsung NASA VRF to BACnet IP/MS/TP Gateway for 4 Indoor Units. 

The newer version of this device is IN770AIR00SO000

The INBACSAM004O000 Intesis Gateway is a dedicated BACnet IP and MS/TP integration device designed for Samsung NASA VRF systems. It provides full bidirectional control and monitoring of up to 4 indoor units from any BMS, SCADA or PLC using BACnet protocols. This enables centralized HVAC management and facilitates integration in both commercial and industrial environments.

The gateway connects directly to the communication bus of the outdoor units and allows real-time control of all connected indoor units. In addition to essential functions such as setpoint temperature, operation mode, fan speed and on/off status, the device also provides access to internal diagnostic data of the VRF system. This includes unit alarms, compressor states, discharge temperatures, and more—enabling advanced diagnostics and maintenance planning.

Configuration is handled through the Intesis MAPS software, which offers automatic scanning of connected indoor units, an intuitive BACnet point-mapping wizard, and robust diagnostic tools. Engineers can quickly build project files, test communication, and deploy stable configurations in a matter of minutes. Thanks to its compact DIN-rail mountable housing, wide power input range (9–36 VDC or 24 VAC), and LED status indicators, the gateway is optimized for installation in both new and retrofit projects.

Specification

Ports:

• Port A
  • 1 × Samsung NASA terminal (2 poles, orange): R1 R2 – 1500VDC isolation
  • 1 × Plug-in screw terminal block (green): Reserved
• Switch A: DIP switch for serial EIA485 – reserved (default OFF)
• Port B
  • 1 × Serial EIA232 (SUB-D9 male): Reserved
  • 1 × Serial EIA485 terminal (3 poles): A, B, SGND – 1500VDC isolation
• Switch B: DIP switch for EIA485 termination and polarization
• Ethernet: 1 × RJ45 10/100 Mbps

Power:

• 1 × Plug-in screw terminal block (3 poles)
• Input: 9 to 36 VDC ±10%, Max. 140mA; or 24 VAC ±10%, Max. 127mA
• Recommended: 24 VDC

LED indicators:

• 2 × Run (Power) / Error
• 2 × Ethernet Link / Speed
• 2 × Port A TX/RX
• 2 × Port B TX/RX
• 1 × Button A indicator
• 1 × Button B indicator

Mechanical Characteristics:

• Material: Plastic, PC (UL 94 V-0)
• Dimensions: 90 × 88 × 56 mm
• Color: Light Grey (RAL 7035)
• Protection: IP20 (IEC 60529)
• Mounting: Wall or DIN rail (EN 60715 TH35)

Environmental:

• Operating Temperature: 0°C to 60°C
• Humidity: 5% – 95%, non-condensing

Warranty: 36 months
Legacy device code: SM-ACN-BAC

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