ABB 2TAZ711111R5021 HVAC-Blind-Housekeeping Module - CE
Part Number: 2TAZ711111R5021
Quick Summary
ABB 2TAZ711111R5021 HVAC-Blind-Housekeeping module is a multi-channel HVAC control device designed to manage fan coil units in hospitality and commercial buildings. It addresses wiring complexity and lengthy commissioning by integrating RS485 communication, analog inputs, and multiple outputs in a single compact unit. The solution is certified for CE conformity, RoHS compliance, and WEEE categorization, ensuring reliable operation in regulated environments. With 230VAC potential-free relay outputs, 0-10V control, and dual analog input channels for sensors, it delivers precise environmental control while reducing energy waste. For facilities managers and procurement teams, this module offers a scalable, easy-to-install HVAC solution that supports uptime, comfort, and total cost of ownership improvements.
Product Information
Extended Description
2TAZ711111R5021 ABB: HVAC-Blind-Housekeeping module is a device with a combination of RS485 port, 230VAC potential free contact relay outputs, 0-10V outputs channel, AD acquisition input channel, binary inputs and outputs channels. The module comes with outputs channels meant for control of the fan coil units. It can control cooling, heating, cooling and heating (On/Off type of valves) with three fan speeds (On/off, 0-10VDC) types of fan coil units. The module has two AD acquisition input channel for connection to external temperature sensor e.g. 2 x NTC / 1 x DS18B20 for more precious environmental control. The 230VAC potential free contact relay outputs are suitable for loads like doorbell, contactors and blind motors. The module has binary inputs and outputs channels to enhance the quantities of input and output required. The module is equipped with zero-crossing protection features to ensure the robustness of the module. The module comes with the manual operation buttons for checking or testing during the commissioning stage.
Number of Batteries
0
Application Function
Hospitality
RoHS Information
GRM_H11.230.0.1_TD_EN_9AKK107991A9794_Rev_A.docx
RoHS Status
Following EU Directive 2011/65/EU
RoHS Date
20210402
REACH Information
No data - If REACH inform is not yet available for a certain product
Conflict Minerals Reporting Template (CMRT)
Conflict Minerals Reporting Template
WEEE Category
4. Large Equipment (Any External Dimension More Than 50 cm)
WEEE B2C / B2B
Business To Business
Product Net Width
162.0 mm
Product Net Height
112.6 mm
Product Net Depth / Length
64 mm
Product Net Weight
0.386 kg
Package Level 1 Units
box 1 piece
Package Level 1 Gross Weight
0.506 kg
Declaration of Conformity - CE
CE Declaration of Conformity BFreLax.pdf
Instructions and Manuals
GRM_H11.230.0.1_QG_EN_9AKK107991A9790_Rev_A
Data Sheet, Technical Information
GRM_H11.230.0.1_TD_EN_9AKK107991A9794_Rev_A.docx
RS485 communication with 230VAC relay outputs and 0-10V control channels provides a compact, centralized control surface. This reduces wiring complexity and enables seamless integration with building management systems, allowing coordinated control of fan coil units in hospitality spaces. It is ideal for hotels, offices, and enclosed facilities where precise load management and quiet operation are critical. Two AD acquisition inputs support external temperature sensors (2 x NTC or 1 x DS18B20), delivering more accurate environmental sensing and responsive climate control. Binary inputs and outputs expand I/O capacity for door sensors, blinds, and valve control, minimizing the need for additional controllers. Zero-crossing protection enhances robustness and load longevity, reducing EMI and component stress during switching. Manual operation buttons facilitate quick commissioning and on-site testing, speeding up startup. The module supports a range of loads—doorbells, contactors, blind motors—while offering compatibility with varied fan coil configurations (three speed modes and 0-10V control) for hospitality and commercial HVAC applications.
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FAQs
The module provides RS485 communication, 0-10V control channels, and 230VAC potential-free relay outputs, enabling seamless integration with many BMS platforms and fan coil configurations. It supports three fan speed modes and valve control options, making it suitable for hospitality and commercial HVAC installations.
Connect the RS485 bus to the building management system, wire 230VAC loads to the relay outputs, and connect 0-10V control lines to fan coil units. Attach external temperature sensors to the AD acquisition inputs (2 x NTC or 1 x DS18B20) and use binary I/O for doors, blinds, or other peripherals. Ensure proper grounding and follow the installation manual during commissioning.
The module includes a CE Declaration of Conformity and RoHS compliance per EU directive 2011/65/EU. It is categorized under WEEE for large equipment and supports CMRT reporting, which helps with regulatory compliance in hospitality and commercial installations.
By combining RS485, 0-10V fan coil control, and sensor inputs in one unit, it reduces wiring, speeds up commissioning, and enables precise climate control. Energy optimization and reduced downtime translate to lower operating costs and improved guest comfort in hotels and serviced apartments.
The device includes zero-crossing protection for load robustness and manual operation buttons for on-site testing during commissioning. With dual analog inputs and expanded I/O, routine checks focus on sensor accuracy and relay integrity, ensuring long-term reliability in busy hospitality environments.