When a machine builder selects a servo system, the lowest purchase price is rarely the same as the lowest project cost. A drive that is inexpensive at checkout may require additional feedback converters, extra commissioning time, more cabinet space or repeated troubleshooting during production. Conversely, a correctly sized single-axis controller can deliver a more predictable installation, especially when the machine requires repeatable positioning, controlled acceleration and stable torque rather than simple variable-speed operation.
The 2kW power class is widely used in equipment that sits between light-duty automation and high-load industrial machinery. CNC routers, small machining centers, packaging and labeling machines, automatic assembly stations, textile equipment and printing lines may all need this level of output, depending on axis inertia and duty cycle. These applications often have one motion axis that deserves independent control: a feed axis, cutter, indexing table, winding roller, gripper or positioning mechanism.
This article reviews five brands that buyers may consider when looking for a cost-effective servo solution: Tonghang E-Drive, INVT, Delta Electronics, Estun Automation and Leadshine. The list is an editorial comparison rather than an audited market-share ranking. It focuses on practical value, product coverage, feedback options, control functions, application fit and the technical support required to turn a drive into a working machine. The featured product is Tonghang's 2kW Single-Axis Servo Drive, which is specified for three-phase 220V AC input, multiple control modes and either incremental or absolute encoder feedback.
What Cost-effective Should Mean in Servo Drive Procurement
Cost-effectiveness is best understood as the relationship between the total ownership cost and the performance delivered by the axis. The purchase price is one part of the calculation, but it should be assessed together with engineering labor, electrical accessories, tuning time, downtime exposure and future service requirements.
For example, a drive that supports the encoder already selected by the machine builder may avoid an interface module. A controller with position, speed, JOG and torque modes may eliminate the need for a second motion device during testing. A supplier that provides application guidance can help the OEM avoid repeated parameter changes on the production floor. These details do not always appear in a simple quotation, but they can materially affect the final project budget.
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Cost area
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Question for the buyer
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Why it matters
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Hardware price
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Does the quotation include the drive, required feedback interface and related accessories?
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Prevents an apparently low price from becoming a higher installed price.
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Electrical compatibility
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Does the power supply match the machine's available three-phase voltage?
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Reduces redesign work and prevents an unsuitable installation.
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Feedback integration
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Can the drive read the selected incremental or absolute encoder?
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Determines whether accurate closed-loop operation can be achieved.
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Commissioning labor
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Are wiring, parameter and tuning instructions available?
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Shortens the time needed to stabilize the axis.
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Operating reliability
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Are common electrical faults detected and protected?
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Helps limit damage, unplanned stoppage and maintenance cost.
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Long-term support
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Can the supplier assist with selection and after-sales troubleshooting?
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Protects the machine builder after delivery.
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A cost-effective servo brand is therefore not necessarily the cheapest brand. It is the supplier that offers a reasonable combination of electrical capability, machine compatibility and support for the intended duty cycle.
Where the 2kW Single-Axis Servo Drive Fits Best
In CNC routing and machining, the axis may need controlled speed and repeatable position during cutting, drilling or tool movement. In packaging, the servo can operate a film-feeding, indexing or labeling mechanism. On an automated assembly line, it may drive a slide, pusher or clamping mechanism that must stop at a repeatable location. Textile and printing equipment can require smooth travel and stable feedback when material tension or registration is important.
The correct application is determined by more than the nominal 2kW rating. Buyers should calculate the load torque, reflected inertia, acceleration profile, peak duty, maximum speed, stopping method and operating cycle. The same drive may be appropriate for one axis and unsuitable for another if the mechanical load or acceleration requirement is different.
Technical Features That Influence Practical Value
The product page for Tonghang's 2kW platform identifies an advanced DSP control core and a smart IPM power module. This architecture is one of the reasons the Single-Axis Servo Drive can offer practical value in dynamic machine applications. A DSP-based control core is intended to process motion-control algorithms efficiently, while an IPM power module integrates important power-switching functions into a compact drive architecture. Together, these elements are positioned for responsive control and industrial protection rather than basic open-loop speed regulation.
The available control modes are position, speed, JOG operation and torque. Position mode is useful when the axis must move to a defined location. Speed mode is relevant when the process depends on a controlled rotational rate. JOG operation supports setup, maintenance and manual alignment, while torque mode can be useful when the machine process is governed by force or tension. Having these options in one controller gives the commissioning engineer more flexibility during machine development.
Feedback compatibility is another important value factor. The product supports 2500-line incremental encoders or 17/23-bit absolute encoders, according to the official specification. The final feedback choice should be made according to the motor configuration and the positioning requirements of the machine. An absolute encoder may be useful where the control system needs detailed position information, while an incremental encoder may be selected for a different balance of cost and system design.
The drive also provides RS485 communication for parameter monitoring. This does not replace the machine's primary motion-command architecture, so the OEM should confirm how commands, status signals and parameter access will be connected to the PLC or controller. Clear division between motion command, feedback and monitoring functions helps prevent wiring confusion during integration.
Five Brands Worth Comparing in the Global Market
Zhejiang Tonghang E-Drive Technology Co., Ltd. is a Chinese high-tech enterprise integrating research and development, production, sales and after-sales service. The company's official profile lists servo drives and servo motors among its main products and describes a manufacturing environment with a 5,000-square-meter clean workshop, automated machinery and precision testing instruments.
The Tonghang 2kW product is designed for dynamic motion applications that require precise positioning, speed control and torque efficiency. Its stated hardware architecture combines an advanced DSP control core with a smart IPM power module. The official specification lists 2000W output power, three-phase 220V AC supply, position/speed/JOG/torque control, 2500-line incremental or 17/23-bit absolute encoder feedback, RS485 parameter monitoring and protection against over-voltage, over-current, overheating and under-voltage.
This combination makes the drive a candidate for machine builders that want an independently controlled axis without moving to a more complex multi-axis cabinet. Its application range includes CNC machining and routing, packaging and labeling, automated assembly lines, and textile and printing equipment. The product page also highlights expert engineering support, reliability and pre-sales and after-sales service, all of which are relevant when the real project cost includes commissioning and support.
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Tonghang specification
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Official product information
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Output power
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2000W (2KW)
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Power supply
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Three-phase 220V AC
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Control modes
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Position, speed, JOG operation and torque
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Encoder feedback
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2500-line incremental or 17/23-bit absolute encoder
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Communication
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RS485 for parameter monitoring
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Power module
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Smart IPM power module
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Control core
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Advanced DSP control core
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Protection
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Over-voltage, over-current, overheating and under-voltage detection and protection
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Target applications
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CNC, packaging, labeling, assembly, textile and printing equipment
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For an OEM, the most useful next step is to confirm the motor pairing, load characteristics and command interface before ordering. The drive's nominal output should be checked against both continuous and peak requirements, not only the motor nameplate.
Explore the product: 0.75kW Permanent Magnet Electric Servo Drive - THSERVO
2. INVT
INVT is an Asian automation and energy-technology manufacturer with a general servo system portfolio. Its official general servo page lists the IMS20B general-purpose AC servo motor and several drive families, including DA200A, DA180A and DA200 products. INVT describes these systems in terms of performance, reliability, quality and cost-effectiveness for industrial and critical-system applications.
INVT can be relevant to buyers that want to compare a servo axis within a wider automation portfolio. When evaluating a 2kW application, procurement teams should confirm the exact drive family, supply voltage, encoder compatibility, communication functions and local service arrangement. The brand's breadth may be valuable where the same supplier is expected to support motion control and other automation components.
3. Delta Electronics
Delta Electronics maintains an official product category for servo systems, AC servo motors and drives. Its automation portfolio is widely associated with motion control, industrial networking and factory automation equipment.
For cost-conscious buyers, Delta may be considered when system consistency and access to a broad automation ecosystem are important. The relevant engineering review should focus on the specific ASDA or equivalent model rather than the brand name alone. Buyers need to verify the rated power, input voltage, encoder feedback, command method, tuning tools and compatibility with the machine PLC. In applications with synchronized axes, the communication architecture and controller integration can have as much influence on cost as the drive price itself.
4. Estun Automation
Estun Automation provides motion-control products that include servo drivers, servo motors, CNC systems, inverters and industrial robots. Its international website lists several servo motor families and permanent-magnet direct-drive torque motor series.
Estun is worth comparing when a machine builder is evaluating a broader motion-control package rather than a standalone drive. Its product coverage can be relevant to machine tools, robotic equipment, component manufacturing and general industrial automation. For a single-axis 2kW project, the buyer should request the exact motor-drive combination, feedback specification, installation requirements and support scope. A technically suitable product family is more important than a general corporate reputation when the axis has unusual inertia or a demanding acceleration profile.
5. Leadshine Technology
Leadshine's official product information covers servo drives, servo motors, stepper products and motion controllers. Its servo-drive range includes AC and DC servo-drive systems, while the corporate overview lists AC servo motors and drives, integrated motors and motion controllers.
Leadshine may attract OEMs that compare servo and closed-loop stepper architectures for CNC, packaging, laser, robotics and general automation. Its wider motion-control range can help engineers examine different approaches before finalizing the axis design. As with other brands, a quotation should be assessed together with encoder type, voltage, control method, peak loading, commissioning tools and after-sales assistance.
A Practical Shortlisting Method for Machine Builders
A useful way to compare brands is to score them against the machine's actual requirements. The table below can be used as a first-stage procurement worksheet. It is not a certification or performance ranking; it is a checklist for technical discussion with each supplier.
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Shortlisting question
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Evidence to request from the supplier
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Is the drive suitable for the machine's 2kW motor?
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Rated and peak current, compatible motor list and duty-cycle guidance.
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Does the feedback match the motor?
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Supported encoder type, resolution, wiring and parameter settings.
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Can the machine use the required control mode?
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Position, speed, JOG and torque instructions, plus command-interface details.
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Is the power system compatible?
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Input-voltage range and wiring requirements for three-phase 220V AC.
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How will the engineer monitor and configure the drive?
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RS485 parameter-monitoring method, software or commissioning documentation.
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What happens during a fault?
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Alarm list, protection behavior, reset procedure and troubleshooting guide.
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What support is included?
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Selection assistance, wiring review, tuning guidance and after-sales response.
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This process avoids a common procurement mistake: comparing only the wattage and price. A drive may have the correct nominal power but still require expensive engineering changes if its feedback connector, command method or supply voltage does not match the machine.
FAQ
Is a 2kW drive suitable for every 2kW servo motor?
No. The drive and motor must be matched by voltage, current, encoder, speed range, feedback wiring and control parameters. Mechanical load, inertia and duty cycle must also be checked. The rated power is a starting point, not a complete sizing decision.
Typical applications include CNC machining and routing, packaging and labeling, automated assembly, textile machinery and printing equipment. The most suitable application depends on the axis load, required precision, acceleration and operating cycle.
An incremental encoder reports motion through pulses, while an absolute encoder provides a coded position value. The preferred option depends on the controller, machine sequence, homing requirements and positioning strategy. The selected encoder must be compatible with the drive and motor.
These modes cover different stages and requirements of a machine. Position mode handles indexed movement, speed mode regulates rotational rate, JOG mode supports setup and maintenance, and torque mode can be considered for force- or tension-sensitive processes. The control mode should be selected according to the application rather than used interchangeably.
The official product information identifies RS485 for parameter monitoring. The OEM should confirm the primary motion-command interface and the required wiring with Tonghang's engineering team before designing the control cabinet.
The product page lists over-voltage, over-current, overheating and under-voltage fault detection and protection through the integrated drive circuit. The machine should still include suitable upstream electrical protection and correct installation practices.
Request a Cost-effective Servo Drive Proposal
The right servo system is the one that meets the motion requirement without adding unnecessary hardware, integration work or maintenance complexity. For a 2kW axis, buyers should prepare the motor specification, supply voltage, encoder type, load inertia, acceleration profile, maximum speed, control method and operating environment before requesting a quotation.
Tonghang E-Drive can provide product-selection guidance and engineering support for OEMs and system integrators evaluating a cost-effective 2kW motion-control solution. The team can also help determine whether the 2kW Single-Axis Servo Drive is appropriate for the motor, feedback device and operating profile. The company's product page identifies the drive as a 2000W controller for three-phase 220V AC systems, with flexible feedback options, four operating modes, RS485 parameter monitoring and integrated electrical protection.
Contact Tonghang Engineering Team to discuss motor matching, application conditions and commissioning requirements for your next automation project.