20kW–30kW High Power Servo Drive

High Power Servo Drive Specifications

Selecting a drive requires a clear understanding of its electrical ratings, supported control functions, and compatibility with the intended motor. The following table provides reference information from the existing TH Servo Drive S3a-H220 model. These values must not be treated as specifications for every model in the proposed power range.

Technical Parameter Table

Specifications to Confirm Before Ordering

The published S3a reference data includes a 22 kW model. It does not, by itself, establish the availability of every rating between 20 kW and 30 kW.

Key Performance and Control Functions

The control requirements of an industrial drive depend on the mechanical task performed by the machine. Understanding these requirements helps engineers evaluate the functions needed for their application instead of selecting equipment by power rating alone.

Speed Regulation

Speed regulation is relevant to machinery that must maintain or adjust motor speed according to production requirements. Engineers should consider the required speed range, load changes, response requirements, and the control signals supplied by the machine controller.

The existing S3a series documentation describes speed-control functions. The applicable operating modes and performance limits should be checked against the specific model.

Position and Torque Control

Position control is used when a machine must move to a defined target, while torque control is relevant when the application requires regulated rotational force. These functions may be important in machine tools and other automated equipment, depending on the mechanical configuration.

The required control mode should be confirmed before ordering, including whether the application needs switching between control modes or coordination with another controller.

Feedback and Communication

Feedback devices provide information used to monitor and regulate motor operation. The existing S3a series lists encoder and resolver options, with compatibility depending on the selected configuration.

Communication and signal integration should also be reviewed. Confirm the available interfaces, command inputs, status signals, and alarm outputs before connecting the drive to a PLC, CNC controller, or other automation system.

Motor Matching and Drive Selection

A suitable drive must match the motor's electrical characteristics and the machine's operating requirements. Two motors with similar rated power may require different configurations because of differences in current demand, speed, torque, and load behavior.

20kW–30kW High Power Servo Drive Applications

Drive selection should be based on the motion requirements of the equipment rather than broad industry labels. The following application areas illustrate the types of requirements that may need to be evaluated.

CNC Machine Tools

CNC equipment may require spindle speed regulation, controlled stopping, and coordination between spindle and feed movements. The selection process should account for spindle motor characteristics, machine dynamics, controller interfaces, and any specialized machining functions required.

TH Servo Drive's S3a series is documented for spindle-related applications. Functions such as rigid tapping or thread cutting should only be specified when supported by the chosen model's documentation.

Textile Machinery

Textile production equipment may operate for extended periods and require consistent motor behavior throughout production cycles. Relevant considerations include speed changes, load variation, startup requirements, and integration with the existing control system.

The appropriate configuration should be determined from the actual machine specifications and operating conditions.

Automated Manufacturing Equipment

Automated machinery can involve multiple motors, sensors, programmable controllers, and communication networks. A drive must provide the control and feedback interfaces required by the wider system.

Engineers should check the command structure, fault monitoring requirements, and coordination between components before finalizing the design.

Equipment Upgrade Projects

When replacing an existing drive, customers should document the original model, motor specifications, wiring, feedback device, and operating requirements. This information helps identify potential differences in electrical ratings, mounting dimensions, and control interfaces.

A replacement should not be considered interchangeable until the manufacturer or qualified system integrator has verified compatibility.

Installation and System Integration

Successful integration depends on the electrical design, motor connections, control signals, and installation environment. Reviewing these elements before commissioning can help reduce compatibility issues and avoid unnecessary modifications.

Electrical Preparation

Power supply and grounding: Verify the supply voltage, protective devices, grounding arrangement, and wiring requirements against the manufacturer's manual.

Motor and feedback connections: Check terminal assignments, cable specifications, feedback wiring, and compatibility with the selected motor.

Cooling and mounting: Provide the clearances and ventilation required by the confirmed model.

Braking arrangements: Determine whether the application requires a braking resistor or other regenerative energy management provisions.

Commissioning Checks

Parameter configuration: Enter the correct motor data and control settings using the model-specific instructions.

Signal verification: Check command direction, feedback response, enable signals, and communication.

Operating tests: Verify speed changes, stopping behavior, and applicable protection functions under controlled conditions.

Documentation: Record final settings and review alarm information before the equipment enters normal production.

Installation and commissioning should be carried out by qualified personnel following the instructions for the exact model. Braking and protection requirements must not be inferred from another drive in the same series.

Why Choose TH Servo Drive?

For industrial buyers, supplier evaluation should consider technical compatibility, product documentation, and the ability to clarify application requirements before an order is confirmed.

FAQ

Is a dedicated 30 kW model available?

The existing S3a reference information does not establish a dedicated 30 kW model. Contact TH Servo Drive to confirm availability, obtain the model number, and request the corresponding datasheet.

How do I select a drive for my motor?

Start with the motor's rated power, voltage, current, speed, and torque. Then evaluate load inertia, acceleration requirements, operating duty, feedback type, and control interfaces. Final selection should be checked against the manufacturer's specifications.

Can I connect a different servo motor to the drive?

Compatibility must be verified before connecting a different motor. Electrical ratings, feedback devices, parameter requirements, and control interfaces may differ between motor models. Obtain confirmation from the manufacturer before installation.

Which communication interface should I choose?

The correct interface depends on the machine controller and the signals required for operation and monitoring. Check the communication options available on the specific drive model and confirm compatibility with the control system.