HollySys HSM Servo Motor Encoder Conveyor Drives 23 Bit Multi Turn

The HollySys HSM series servo motor and conveyor drives integrate a standard 23-bit multi-turn absolute encoder, delivering exceptional motion control precision for demanding industrial automation environments. Engineered with a 10-pole 12-slot electromagnetic structure and optimized IP67 environmental protection, these advanced conveyor drives ensure reliable performance and minimal thermal accumulation.

Modern industrial automation systems demand extreme precision, rapid dynamic response, and uninterrupted reliability across high-speed packaging, material handling, and complex multi-axis manufacturing lines. The HSM series addresses these critical requirements by combining state-of-the-art magnetic circuit designs with comprehensive vacuum potting manufacturing processes. This engineering approach significantly reduces cogging torque, enhances structural rigidity, and maintains exceptionally low noise levels during continuous high-load operations. Engineers configuring modern automated production lines benefit from reduced physical footprints, optimized heat dissipation, and versatile encoder configurations ranging from 17-bit single-turn to 23-bit multi-turn absolute feedback variants.

Technical Specifications

Series Designation: HSM Servo Motor and Conveyor Drives

Encoder Resolution: 23-Bit Multi-Turn Absolute / 17-Bit Single-Turn Absolute

Stator Architecture: 10-Pole 12-Slot Configuration

Ingress Protection: IP67 Optimized Rating

Manufacturing Process: Vacuum Potting Resin Insulation

Cooling Method: Natural Convection / Surface Radiation

Rated Voltage: 220 V / 380 V AC

Power Range: 0.10 kW - 7.50 kW @ Rated Conditions

Rated Torque: 0.32 N.m - 47.75 N.m @ Rated Speed

Rated Speed: 1500 rpm - 3000 rpm @ Operational Load

Maximum Speed: 1800 rpm - 6000 rpm @ Peak Capability

Rated Current: 1.0 A - 17.0 A @ 220V/380V AC

Maximum Current: 3.0 A - 42.5 A @ Acceleration Phase

Rotor Inertia: 0.051 kg.cm² - 163.09 kg.cm² @ Standard Configuration

Insulation Class: Class F (155°C) Thermal Threshold

Ambient Operating Temperature: 0°C - 40°C @ Unrestricted Flow

Ambient Operating Humidity: Less than 85% RH (Non-Condensing)

Vibration Resistance: 49 m/s² (5.0 G) Maximum Acceleration

Shock Resistance: 98 m/s² (10.0 G) Peak Impact Limit

Wide Coverage: From Micro Precision to Heavy-Duty Industrial Servo Matrix

The HSM series features a comprehensive power spectrum ranging from 0.10 kW to 7.50 kW, matching frame sizes from 40 mm to 180 mm. This extensive range provides flexibility for machine builders configuring diverse multi-axis automation architectures.

By offering varied inertia options, flexible speed profiles, and advanced absolute encoder feedback, the system accommodates diverse mechanical loads. System integrators can seamlessly scale drive configurations across simple material transport tasks and complex synchronous robotic operations.

Core Performance Decryption: Inertia Matching and Overload Capability Logic

The peak current ratings of the HSM series provide high transient torque multiplication, enabling rapid acceleration and deceleration profiles. This characteristic allows drives to absorb mechanical shocks during high-frequency indexing cycles without triggering thermal protection trips.

Inertia selection is critical for system stability. Low-inertia models such as the 40 mm and 60 mm variants excel in high-dynamic applications requiring rapid settling times. Conversely, medium and large inertia variants in the 130 mm and 180 mm frames deliver smooth torque output under heavy loads.

Operating speeds span standard nominal levels of 1500 rpm, 2000 rpm, and 3000 rpm, with maximum velocity extensions reaching up to 6000 rpm. This velocity range allows engineers to optimize mechanical gear ratios and match ball-screw or conveyor lead requirements effectively.

Voltage Systems and Power Supply Adaptation: Selection Boundaries for 220V and 380V

The 220V power supply variants are tailored for compact single-phase or low-voltage three-phase architectures, making them suitable for lightweight machinery, electronics assembly benches, and space-constrained enclosures. These units minimize component footprint while maintaining high dynamic responsiveness.

The 380V power systems target heavy-duty industrial grids, supplying stable power to high-power actuators and multi-axis processing centers. Evaluating current draw parameters across identical power outputs—such as comparing 1 kW ratings at different voltages—allows electrical engineers to optimize cable gauges and reduce distribution losses.

Typical Application Scenarios and Mechanical Matching Guidelines

For 40 mm to 80 mm frame sizes spanning 0.10 kW to 1 kW, applications focus on high-speed electronics assembly, automated optical inspection stages, and miniature packaging lines. These systems require rapid settling times and minimal thermal drift during continuous operation.

The 100 mm to 130 mm frame sizes covering 1 kW to 3 kW target CNC engraving tables, lithium battery manufacturing modules, and textile machinery. These environments demand consistent torque delivery and steady speed regulation under varying frictional loads.

The 180 mm frame models spanning 2.9 kW to 7.5 kW serve heavy-duty CNC machining centers, metal stamping feeds, and large material handling gantries. These heavy-load environments require high torsional rigidity and robust overload capacities.

Selection Pitfalls and System Integration Recommendations

System integrators must verify the rotor-to-load inertia ratio alongside nominal power ratings to prevent resonant oscillation and control instability. Exceeding recommended inertia mismatch thresholds can lead to hunting behavior and excessive settling times during positioning tasks.

Proper shielding of encoder feedback cables and motor power leads is essential to prevent electromagnetic interference in dense industrial control panels. Maintaining adequate physical separation between power conduits and low-voltage signal lines ensures long-term signal integrity.

Frequently Asked Questions (FAQ)

1. What are the lead times and stock availability for urgent industrial replacements?

Standard configurations are stocked in regional warehouses to support expedited dispatch for emergency maintenance and critical plant downtime recovery.

2. What warranty coverage applies to these servo motors and conveyor drives?

All units are backed by a comprehensive 12-month commercial and technical warranty covering manufacturing defects and operational anomalies.

3. How does the 23-bit multi-turn absolute encoder function without an external backup battery?

The multi-turn absolute architecture records mechanical rotation data continuously, eliminating homing routines upon system startup.

4. Can these motors operate in environments with high moisture or coolant exposure?

The optimized IP67 rating protects internal components against water jets, oil mist, and fine dust accumulation during heavy industrial use.

5. What is the maximum allowable cable length between the servo drive and the motor?

Standard power and encoder cables perform reliably up to 50 meters when using properly shielded industrial-grade twisted-pair configurations.

6. How does the vacuum potting manufacturing process improve motor longevity?

Vacuum potting eliminates microscopic air pockets within the stator winding assembly, enhancing thermal conductivity and vibration resistance.

7. Are 17-bit single-turn encoder variants interchangeable with 23-bit multi-turn models?

Physical mounting dimensions match, but control software parameters and feedback configuration settings must be adjusted accordingly within the drive controller.

8. What safety precautions are necessary when commissioning 380V high-power servo axes?

Ensure proper protective earth grounding of the motor housing and drive chassis to mitigate electrical hazard risks during high-voltage operation.