INMBSSAM008O000 – Samsung NASA VRV to Modbus RTU/TCP Gateway for 8 Indoor Units

INMBSSAM008O000 – Samsung NASA VRV to Modbus RTU/TCP Gateway for 8 Indoor Units. 

The newer version of this device is IN770AIR00SO000

The INMBSSAM008O000 gateway from Intesis is designed for bidirectional integration of Samsung NASA VRV air conditioning systems with Modbus RTU or Modbus TCP networks. It enables control and monitoring of up to 8 indoor units directly from BMS, SCADA, or PLC platforms operating as Modbus masters.

The device connects directly to the communication bus of the Samsung outdoor units and allows centralized control of all connected indoor units. This includes not only access to standard AC features such as setpoint, mode, and fan speed but also the ability to monitor certain internal variables from the outdoor unit for advanced diagnostics and system performance analysis.

Configuration and commissioning are done through Intesis MAPS, a powerful and user-friendly software environment for all new generation Intesis gateways. It provides advanced features such as a scan function that automatically discovers all units in the system, customizable register mapping, and real-time diagnostics to quickly identify any communication issues. This reduces installation time and minimizes integration complexity.

Technical Specifications:

Terminal Wiring:

• 1 core: 0.5mm² to 2.5mm²
• 2 cores: 0.5mm² to 1.5mm²
• 3 cores: not permitted

Communication Ports:

• Samsung AC port: 1 x EIA485, 2-pole screw terminal (SELV)
• Modbus RTU:
  • 1 x RS232 (DB9 male, DTE)
  • 1 x RS485 (2-pole screw terminal)
• Modbus TCP: 1 x Ethernet 100Base-T RJ45
• Console port: RS232 DB9 female (DCE) – also for configuration and firmware upgrade

Power Supply:

• Connector: 2-pole terminal block
• Input: 9 to 30 VDC ±10%, Max 125mA
• 24 VAC ±10%, 50–60 Hz, Max 127mA
• Use NEC Class 2 or LPS, SELV rated source

System Monitoring:

• LED Indicators:
• 1 x Power
• 2 x Modbus RTU activity (Tx, Rx)
• 2 x Samsung AC activity (Tx, Rx)
• 2 x Modbus TCP / Ethernet (LNK, ACT)

Mechanical Characteristics:

• Enclosure: PC plastic (UL 94 V-0)
• Dimensions: 107mm x 105mm x 58mm
• Color: Light Grey (RAL 7035)
• Protection: IP20 (IEC60529)
• Mounting: Wall or DIN rail (EN60715 TH35)

Environmental:

• Operating Temperature: 0°C to 70°C
• Humidity: 5% to 95%, non-condensing

Certifications:

• CE – EMC Directive 2004/108/EC and Low Voltage Directive 2006/95/EC
• RoHS compliant – 2002/95/EC
• EN 61000-6-2, EN 61000-6-3
• EN 60950-1, EN 50491-3

Manufacturer’s Warranty: 36 months

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