INKNXMID001I000 – KNX TP-1 interface for Midea VRF systems, 1 indoor unit, 29 V DC KNX powered, ETS configuration, internal mounting, 71 × 71 × 27 mm

INKNXMID001I000 – KNX TP-1 (EIB) interface for Midea Commercial & VRF air-conditioning systems, single indoor unit, powered from the KNX bus (29 V DC), ETS configuration, internal or wall installation, dimensions 71 × 71 × 27 mm.

The INKNXMID001I000 interface enables seamless bidirectional communication between KNX TP-1 networks and Midea Commercial & VRF systems. It allows complete control and monitoring of the indoor unit from any KNX controller or visualization system, providing access to key HVAC functions such as On/Off, operating mode, fan speed, temperature setpoint, vane position, remote-controller lock and alarm reporting. Configuration and commissioning are handled through ETS (Engineering Tool Software), ensuring full interoperability and compliance with KNX standards.

Communication with the air-conditioning unit is achieved via the XYE communication port on the indoor unit, while KNX connectivity uses the standard TP-1 red/grey connector. The interface is bus-powered directly from KNX (29 V DC, 7 mA), eliminating the need for an external power supply and simplifying wiring. All HVAC operating variables are represented as standard KNX communication objects using DPT_Switch, DPT_HVACMode, DPT_Value_Temp and DPT_String. This ensures smooth integration with KNX thermostats and supervisory systems while maintaining synchronization with the local wired or IR remote controller. Parallel control via both KNX and the original Midea controller is fully supported.

The interface is supplied in a compact ABS UL 94 V-0 enclosure and can be mounted inside the indoor unit or externally using suitable protection against electrostatic discharge. Local diagnostics and programming are available via the integrated LED indicator and programming button. ETS parameters allow defining the control mode, feedback update method, pilot-lock behaviour, and default startup states. A built-in runtime counter assists in preventive-maintenance strategies. The device can manage up to 64 units per project when multiple gateways are deployed, providing flexibility for large installations.

Designed for reliable operation in professional automation environments, the INKNXMID001I000 features 4000 V galvanic isolation between KNX and AC circuits, ensuring electrical safety and EMC compliance. It operates within a temperature range of 0 … +60 °C and tolerates storage down to –40 °C. Compliance with CE (EMC & LVD) and RoHS Directives guarantees safety and environmental responsibility. Each unit includes detailed installation documentation and ETS application files downloadable from the manufacturer’s support portal.

Main features

• Full KNX TP-1 ↔ Midea VRF integration (1 indoor unit per gateway).
• Direct connection to the indoor unit’s XYE port and KNX bus.
• Bus-powered (29 V DC) – no external power supply required.
• Complete HVAC object set: On/Off, Mode, Fan Speed, Setpoint, Vanes, Lock, Error Code/Text.
• Local LED and programming button for diagnostics.
• ETS configuration with standard KNX DPT types for seamless integration.
• Compact design (71 × 71 × 27 mm) for internal mounting in the indoor unit.
• 4000 V isolation between KNX and HVAC circuits, EMC compliant.
• CE and RoHS certified, 3-year warranty, manufactured in Spain.

Technical specifications

Identification and compliance

• Model: INKNXMID001I000 (legacy ref. MD-AC-KNX-1B)
• Application: Midea Commercial & VRF systems → KNX TP-1 integration
• Configuration: via ETS software (application file available online)
• Warranty: 3 years
• Certifications: CE (EMC 2004/108/EC, LVD 2006/95/EC), EN 61000-6-2, EN 61000-6-3, EN 60950-1, EN 50491-3, RoHS
• ETIM: EC001604; WEEE Category: IT & Telecom Equipment
• ECCN: EAR99 HS Code: 8517620000 Origin: Spain

Ports and interfaces

• KNX TP-1: standard red/grey connector with LED and program button.
• HVAC Port (AC): 3-wire XYE connection to indoor unit.
• Indicators: 1 LED for bus status and programming.
• I/O connections: KNX bus and HVAC (XYE) ports.
• Battery: not required.

Power supply

• Input voltage: 29 V DC (from KNX bus).
• Current consumption: 7 mA typical (from KNX).
• Power consumption: ≤ 5.8 W (nominal, datasheet value).

Enclosure and mounting

• Material: ABS UL 94 V-0; colour white (RAL 9010).
• Dimensions: 71 × 71 × 27 mm.
• Net weight: 42 g (User Manual) / 70 g (Product Sheet).
• Packed dimensions: 122 × 67 × 93 mm / weight 127 g.
• Mounting: inside indoor unit (preferred) or external with ESD protection.

Environmental conditions and insulation

• Operating temperature: 0 … +60 °C; storage: −40 … +85 °C.
• Humidity: up to 95 % non-condensing.
• Electrical isolation: 4000 V between KNX and HVAC circuits.

Installation notes (XYE bus)

• If the gateway is not at the end of the XYE bus, disable the 120 Ω termination (resistor jumper J1).
• Only one central controller is allowed on the XYE line; for parallel operation with another controller, use the optional XYE Extension Kit.

Warranty and certifications

• Warranty: 3 years manufacturer’s warranty.
• Certifications & standards: CE (EMC/LVD), EN 61000-6-2, EN 61000-6-3, EN 60950-1, EN 50491-3, RoHS.
• Classifications: ETIM EC001604 / WEEE IT & Telecom Category.

Example of integration