ABB 2TAZ711081R5061 Blind-HVAC Relay Module - Zero-crossing
Part Number: 2TAZ711081R5061
Quick Summary
ABB 2TAZ711081R5061 Blind-HVAC relay module provides RS485 networked control and 0-10V dimming for HVAC fan coils. Engineers often face integration challenges coordinating cooling, heating, dimming, and lighting with limited I/O. It carries CE conformity, RoHS compliance, and WEEE classification, supporting safe and compliant deployment in regulated environments. Designed for industrial automation and electrical protection, it supports scalable control, faster commissioning, and reduced wiring complexity. This combination delivers clear business value by enabling scalable, reliable control.
Product Information
Extended Description
2TAZ711081R5061 ABB: Blind-HVAC-Relay module is a device with a combination of RS485 port, 230VAC potential free contact relay outputs, 0-10V outputs channel and binary inputs channels. The module comes with the outputs channel meant for control of the fan coil units. It can control cooling, heating, cooling and heating (0-10V type of valves) with three fan speeds (On/off, 0-10VDC) types of fan coil units. The 230VAC potential free contact relay outputs are suitable for loads with high surge currents e.g. fluorescent/LED lighting (with precondition) and blind motors. The module has multiple 0-10V output channels that can be configured to control 0-10VDC dimming. The module has binary input channels to enhance the quantities of input 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_B8.230.0.1_TD_EN_9AKK107991A9795_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
0.527 kg
Package Level 1 Units
box 1 piece
Package Level 1 Gross Weight
0.527 kg
Declaration of Conformity - CE
CE Declaration of Conformity BFreLax.pdf
Instructions and Manuals
GRM_B8.230.0.1_QG_EN_9AKK107991A9791_Rev_A
Data Sheet, Technical Information
GRM_B8.230.0.1_TD_EN_9AKK107991A9795_Rev_A.docx
The RS485 interface enables centralized, networked control of multiple units, reducing wiring complexity and enabling scalable deployments across hotel and commercial spaces. Business impact: streamlined installation, improved system visibility, and easier remote diagnostics in hospitality HVAC and industrial environments. Application: ideal for centralized fan coil management and integrated building automation, boosting operational efficiency and reducing maintenance cycles. The 230VAC potential-free relay outputs handle high surge loads such as fluorescent/LED lighting and blinds, delivering robust switching and longer life in demanding installations. Business impact: lower component replacement costs and safer power switching for large equipment loads. Application: lighting control, blinds motors, and high-current actuators in hospitality and healthcare facilities. Multiple 0-10V outputs provide dimming control for valves and fan speeds, enabling precise environmental tuning. Business impact: energy savings through optimal fan and valve modulation; application: dimming for HVAC coils and brightness-controlled lighting. Binary inputs expand sensing capability, improving fault detection and automation logic without extra hardware. Application: enhanced monitoring for room occupancy, temperature, and status signals. Zero-crossing protection boosts robustness against load spikes and voltage transients, reducing nuisance trips and extending module life. Application: reliable operation in commercial HVAC and lighting control. Manual operation buttons support commissioning and testing without a full control network, accelerating start-up and troubleshooting. Application: quick verification during installation and servicing, minimizing downtime.
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FAQs
Wire the RS485 port to the control network, connect 230VAC to the potential-free relay outputs for fans, valves, and lighting, and route each 0-10V channel to corresponding dimming devices. Use the binary inputs for additional sensing. The zero-crossing protection helps prevent nuisance trips, while manual operation buttons assist during commissioning.
The module provides multiple 0-10V output channels for dimming control and 230VAC potential-free relay outputs designed to switch high surge loads like lighting and motorized blinds. The RS485 port supports networked control, and built-in zero-crossing protection enhances robustness against transients.
Yes. The product is designed for hospitality applications, with an application function aligned to hotel/guestroom HVAC control and lighting scenarios. Its dimming capability, robust relay switching, and sensor inputs support precise environmental control and energy optimization in guest areas and public spaces.
The module adheres to CE conformity and RoHS compliance, and is categorized under WEEE as large equipment. Supporting documents include a CE Declaration of Conformity and RoHS information, with the CMRT available for supply-chain transparency.
Zero-crossing protection reduces voltage transients and trip events, lowering maintenance needs and extending component life. Commissioning is accelerated by manual operation buttons that allow testing during setup, decreasing downtime and improving return on investment through faster deployment and fewer service calls.