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MCX20B2

Product catalog summary

Overview: The MCX15B2 and MCX20B2 are sophisticated electronic controllers for HVAC/R applications, offering extensive input/output capabilities, enhanced CPU performance, and robust connectivity. They support programmability, CANbus networking, and up to two Modbus RS485 interfaces with galvanic isolation. These controllers feature a wide-range power supply (24/110/230 V AC), USB, and Ethernet connections for web server and IP protocol management. Models are available with or without a graphic LCD display and offer 15 or 20 digital outputs.

Specifications:

MCX20B2: 16 analog and 22 digital inputs, 6 analog and 20 digital outputs.
MCX15B2: 10 analog and 22 digital inputs, 6 analog and 15 digital outputs.
Power supply: 24 – 230 V AC.
USB for software upload and datalogging.
Ethernet with web server and IP protocols.
Remote data access via CANbus.
RTC clock with supercapacitor backup.
Dimensions: 16 DIN modules.

Input/Output Details:

Analog Inputs: 16 on MCX20B2, 10 on MCX15B2, supporting various voltage and current types.
Digital Inputs: 22 total, selectable between 24 V AC or voltage-free.
Analog Outputs: 6 total, 0/10 V, galvanically isolated.
Digital Outputs: 20 on MCX20B2, 15 on MCX15B2, with reinforced insulation between groups.

Communication Interfaces:

CANbus for user interfaces and service tools.
USB for future use and software updates.
RS485 for BMS communication, with galvanic isolation.
Ethernet for web server functionality.

Certifications and Approvals: The controllers comply with various international standards, including EU-UK, EAC, and UL certifications, ensuring safety and environmental compliance.

Additional Features:

Optional LCD display with adjustable backlight and contrast.
6-key keyboard with customizable functions.

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Catalog excerpts

Data sheet Program. controller, 15/20 relays MCX15B2 / MCX20B2 Electronic controller suitable for all HVAC/R software application needs.

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 o 16 analog and 22 digital inputs o 6 analog and 20 digital outputs o 10 analog and 22 digital inputs o 6 analog and 15 digital outputs • Ultra wide range power supply from 24 - 230 V AC • USB connector for easy software upload and datalogging • Ethernet with Web server feature and several IP protocols • Remote access to data through CANbus connection for additional display and keyboard • RTC clock for managing weekly time programs and data logging information with supercapacitor as temporary backup power • Up to two Modbus RS485 opto-isolated...

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 Accessories code numbers 080G0404 Electron. control accessories, Connector Kit for MCX20B2, MCX series Connector Kit for MCX20B2, Used for product: MCX series, Packing format: Multi pack, Quantity per packing format: 50 Product portfolio Table: Portfolio overview Power supply Built-in display (optional) Analog Inputs Digital Inputs Analog Outputs Digital Outputs Product image Ethernet / Web server USB/Memory Card Dimensions (1 DIN module = 17.5 mm) 3 | © Danfoss | Climate Solutions | 2025.10

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 4 | © Danfoss | Climate Solutions | 2025.10

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 5 | © Danfoss | Climate Solutions | 2025.10

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 6 | © Danfoss | Climate Solutions | 2025.10

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 7 | © Danfoss | Climate Solutions | 2025.10

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 -VOLTAGE FREE or 24 V DIGITAL INPUT (DI5 - DI22) VOLTAGE FREE 8 | © Danfoss | Climate Solutions | 2025.10

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 Table: Top board Connectors Digital input 1 connector 3 way screw plug-in connector type 9 | © Danfoss | Climate Solutions | 2025.

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 Table: User Interface 11 | © Danfoss | Climate Solutions | 2025.10

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Data sheet Program. controller, 15 relays, MCX15B2 / MCX20B2 Contact details Online support Danfoss oﬀers a wide range of support along with our products, including digital information, software, mobile apps and expert guidance. See the possibilities below. The Danfoss Design center Discover the Design Center, our advanced digital platform that streamlines product selection. With integrated tools and enhanced type pages, it's simpler than ever to access product information and documentation, and to select the right products. Check the availability of Danfoss products at partner locations and...

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