The HollySys HS Q71 brushless servo motor variable speed drive delivers high-frequency response and compact thermal efficiency for demanding automation tasks. Equipped with advanced load inertia identification, this unit optimizes trajectory tracking and stabilizes low-speed mechanical motion. Industrial automation professionals can source this reliable component through Beijing Zhongping Technology, ensuring streamlined local integration.
Modern automated machinery demands drive systems capable of maintaining sub-millisecond control loops while handling sudden load variations without mechanical resonance or thermal overload. The HollySys HS Q71 brushless servo motor variable speed drive addresses these high-performance requirements through a hardware architecture featuring a 3.0 kHz response frequency. By integrating real-time velocity observation and automatic load inertia identification algorithms, the unit dynamically tunes its internal PID gains to compensate for changing mechanical loads during aggressive multi-axis movements. High-speed fieldbus interfaces such as EtherCAT, CANopen, and RS-485 ensure deterministic multi-axis synchronization, while native support for 17-bit and 23-bit absolute encoders delivers exceptional positioning feedback resolution. Furthermore, optimized structural engineering reduces the footprint of select models like the 5R5 by up to 30% compared to previous generations, fitting effortlessly into space-constrained control cabinets.
Technical Specifications
Product Series: HollySys HS Q71 Variable Speed Drive
Response Frequency: 3.0 kHz @ Current Loop
Encoder Compatibility: 17-bit and 23-bit absolute encoders @ Digital Feedback
Communication Protocols: EtherCAT, CANopen, RS-485 @ Fieldbus Layer
HSD-Q71-1R8A Input Voltage: Single-Phase 220 VAC @ 50/60 Hz
HSD-Q71-1R8A Rated Current: 1.8 A @ Continuous Load
HSD-Q71-1R8A Peak Current: 6.3 A @ Instantaneous Acceleration
HSD-Q71-3R3A Input Voltage: Single-Phase 220 VAC @ 50/60 Hz
HSD-Q71-3R3A Rated Current: 3.3 A @ Continuous Load
HSD-Q71-3R3A Peak Current: 11.6 A @ Instantaneous Acceleration
HSD-Q71-5R5A Input Voltage: Single-Phase / Three-Phase 220 VAC @ 50/60 Hz
HSD-Q71-5R5A Rated Current: 5.5 A @ Continuous Load
HSD-Q71-5R5A Peak Current: 16.5 A @ Instantaneous Acceleration
HSD-Q71-7R6A Input Voltage: Single-Phase / Three-Phase 220 VAC @ 50/60 Hz
HSD-Q71-7R6A Rated Current: 7.6 A @ Continuous Load
HSD-Q71-7R6A Peak Current: 22.8 A @ Instantaneous Acceleration
HSD-Q71-9R5A Input Voltage: Three-Phase 220 VAC @ 50/60 Hz
HSD-Q71-9R5A Rated Current: 9.5 A @ Continuous Load
HSD-Q71-9R5A Peak Current: 23.8 A @ Instantaneous Acceleration
HSD-Q71-3R8D Input Voltage: Three-Phase 400 VAC @ 50/60 Hz
HSD-Q71-3R8D Rated Current: 3.8 A @ Continuous Load
HSD-Q71-3R8D Peak Current: 11.4 A @ Instantaneous Acceleration
Programming Interface: USB Port @ PC Software Connection
System Integration and Hardware Setup
Proper physical installation of the variable speed drive requires strict adherence to shielding and grounding guidelines to mitigate high-frequency electromagnetic interference within industrial environments. Route motor power cables using double-shielded twisted-pair copper conductors, ensuring the outer braid makes a 360-degree low-impedance bond to the conductive subpanel using EMC cable clamps. Separate low-voltage digital and encoder signal lines from high-current power cables by a minimum distance of 200 mm to prevent cross-talk and spurious feedback signals. Terminate the system ground to a dedicated low-resistance copper bus bar, maintaining a star-configuration earth layout to eliminate ground loops between the controller, drive chassis, and motor frame. Connect the industrial network cabling via shielded RJ45 connectors for EtherCAT links, verifying that the network topology follows recommended maximum segment lengths of 100 meters between nodes.
Reliability and Environmental Durability
Designed for continuous operation in rigorous industrial settings, the unit incorporates thermal management strategies that dissipate internal heat effectively without requiring external filter maintenance. The drive housing is constructed from ruggedized materials rated for ambient operating temperatures between 0°C and 55°C, with a relative humidity tolerance of up to 90% non-condensing. Internal printed circuit boards receive conformal coating protection against conductive dust, chemical mists, and corrosive vapor infiltration. Active thermal monitoring protects power switching transistors from over-temperature faults during heavy cyclical loads. Mean Time Between Failures exceeds 100,000 hours of continuous operational duty when maintained within specified environmental thresholds.
Selection Guidance and Alternative Options
Selecting the appropriate variable speed drive model requires careful evaluation of continuous torque demands, peak acceleration requirements, and incoming supply voltages. For single-phase 220 VAC inputs in compact machine frames, the HSD-Q71-1R8A and HSD-Q71-3R3A models provide optimal power density. Applications requiring heavier torque transients can leverage units like the HSD-Q71-7R6A or HSD-Q71-9R5A, while industrial 400 VAC machinery benefits directly from the HSD-Q71-3R8D variant. Technical teams seeking cross-reference validation, alternative sizing, or immediate local stock availability can consult with Beijing Zhongping Technology for specialized engineering support.
Frequently Asked Questions (FAQ)
1. What are the standard lead times and delivery schedules for stock orders of this servo drive?
Standard configurations are maintained in regional inventory, allowing order fulfillment and dispatch within 2 to 3 business days following payment confirmation.
2. What commercial warranty coverage applies to this industrial automation component?
Every unit is backed by a comprehensive 12-month manufacturer warranty covering material defects and internal hardware malfunctions from the date of purchase.
3. How does the 3.0 kHz response frequency benefit high-speed motion control loops?
A higher response bandwidth shortens the settling time of the current loop, enabling faster correction of tracking errors and sharper contouring performance during complex multi-axis interpolation.
4. Which communication protocols are natively supported by this drive hardware?
The unit natively supports high-speed industrial fieldbus standards including EtherCAT, CANopen, and RS-485 serial communication.
5. Can this drive interface with high-resolution absolute encoders?
Yes, the control board is fully compatible with both 17-bit and 23-bit absolute encoder feedback devices for precise positional accuracy.
6. What software interface is used for parameter configuration and tuning?
Commissioning and parameter adjustments are performed via a dedicated USB connection linking the drive directly to a host PC running the manufacturer configuration utility.
7. How does the internal load inertia identification function operate?
The firmware executes automated test excitation signals through the motor shaft to calculate mechanical system resonance and total reflected inertia, automatically updating internal control parameters.
8. What electrical input options are available across the model lineup?
The series supports single-phase 220 VAC, single/three-phase 220 VAC, and three-phase 400 VAC inputs depending on the specific power tier selected.
9. Are there physical dimension reductions compared to older drive generations?
Hardware restructuring has reduced the physical volume of specific units, such as the 5R5 model variant, by up to 30%.
10. What preventive maintenance steps are recommended for long-term operational reliability?
Routine maintenance involves inspecting terminal screw torque values annually, checking cooling airflow paths, and ensuring that cable shield grounding clamps remain tight and free of oxidation.
FAQ
1.Who are We?
Beijing Zhongping Technology Co., LTD., is a global industrial electrical automation service provider, is a scientific research, design, marketing, technical services, industrial Internet, international import and export services as one of the science and technology companies.
2.What can you buy from us?
PLC, inverter, human-machine interface, hydraulic products, low-voltage power distribution, industrial robots and core components
3.Is the item in stock or need to be purchased from another supplier?
We have a large inventory of goods and have our own warehouse.
4.What advantages do we have over other suppliers?
Our company has a large amount of inventory and a number of warehouses, but also in the country's important industrial provinces and cities with offices and a number of overseas service points. To provide you with intelligent manufacturing one-stop comprehensive services, save efforts, labor and cost.
5.Can you provide 100% new original authentic products?
We only sell new original genuine, no renovation, no fake, only for the original factory original!
6.How long is the delivery time?
If there is a stock, it will take 2-3 working days to ship, if the quantity is large, it will take 5-7 working days after receiving the payment, if it is not a conventional model, it will take some time, we will inform you of the specific delivery time.
7.Is there technical support available?
Of course, we have a professional technical team that can help you solve technical problems.
8.How do we guarantee quality?
We have three processes to control the quality of goods.
1) Our engineers will inspect the production and quality control in the factory regularly.
2) Incoming materials shall be inspected by experienced purchasing engineers before they can be stored.
3) At least 2 people in the logistics department cross-check the goods to be sent before delivery.
9.Can you guarantee the safe and reliable delivery of your products?
Yes, we strictly adopt the international standard packing. We also use special packaging for dangerous goods, and refrigerated shipping for items with temperature requirements. Special item packaging and general cargo standard packaging requirements may incur additional costs.
10.How about the freight?
The cost depends on how you choose to get the goods. Express is usually the fastest but also the most expensive way. Sea freight is the best solution for large quantities of goods. The exact shipping cost depends on the purchase amount、quantity and weight of your order. Please feel free to contact us for more information.
+86 010-64225983
+8613811814778
Building 26, Liyuan Community, Chaoyang District, Beijing, China
