Editorial Technical Reference

Servo Drive Module

This page explains how Servo Drive Module is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A servo drive module is a critical electronic component within a robot controller system that receives low-power command signals and converts them into high-power electrical currents to precisely control the position, velocity, and torque of servo motors.

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Servo Drive Module in a manufacturing environment
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Product Specifications

Technical details and manufacturing context for Servo Drive Module

Definition
A servo drive module is a critical electronic component within a robot controller system that receives low-power command signals and converts them into high-power electrical currents to precisely control the position, velocity, and torque of servo motors. It serves as the interface between the controller's motion planning algorithms and the physical actuators that move the robot. The module typically includes a printed circuit board (PCB) with power semiconductors such as IGBTs or MOSFETs, an aluminum heat sink for thermal management, and copper windings for inductive components. It operates on a three-phase AC supply voltage of 200–480 V AC (per IEC 60038) and provides a rated power range of 0.4–15 kW, with continuous output current from 2–60 A and peak output current from 4–120 A (typically twice the continuous rating). The control accuracy is ±0.01%, and the speed range is 0–6000 rpm. The module is designed for an operating temperature of -10 to 50 °C (derate above 40 °C) and storage temperature of -20 to 70 °C, with non-condensing humidity of 5–95% RH. Protection class ranges from IP20 to IP65 per IEC 60529, and weight varies from 1.5 to 25 kg depending on power and enclosure. Dimensions range from 60×180×150 mm to 300×500×400 mm (W×H×D). These values are typical reference ranges; actual specifications must be confirmed with the legal manufacturer or supplier for the specific model and application. The module is a component intended for integration into robotic systems, and its selection depends on motor size, required power, and environmental conditions. Verification of compliance with applicable standards and performance parameters is the responsibility of the integrator or end user.
Working Principle
The module receives digital motion commands from the robot controller, processes these signals through power electronics (typically using PWM - Pulse Width Modulation), amplifies the power to drive servo motors, and incorporates feedback loops (often using encoders or resolvers) to ensure precise positioning and motion control according to the commanded parameters. The feedback loop continuously compares the actual motor state with the commanded state and adjusts the output to minimize error, achieving high control accuracy. The module also monitors its own operating conditions, such as temperature and current, to protect against overload or fault conditions.
Common Materials
Printed Circuit Board (PCB), Semiconductors (IGBTs/MOSFETs), Aluminum heat sink, Copper windings
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Power0.4–15 kWMatches motor size; higher power for larger robots
Supply Voltage200–480 V ACThree-phase; outside range may damage driveIEC 60038
Continuous Output Current2–60 AMust exceed motor rated current
Peak Output Current4–120 AFor acceleration; typically 2x continuous
Control Accuracy±0.01 %Speed regulation accuracy
Speed Range0–6000 rpmDepends on motor; typical for servo
Operating Temperature-10–50 °CDerate above 40°CIEC 60721-3-3
Storage Temperature-20–70 °CNon-condensing environment
Humidity5–95 % RHNon-condensing
Protection ClassIP20–IP65Higher IP for harsh environmentsIEC 60529
Weight1.5–25 kgDepends on power and enclosure
Dimensions (W×H×D)60×180×150–300×500×400 mmVaries with model

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Power Stage
    Amplifies control signals to drive motor windings
    Material: Semiconductor devices (IGBTs/MOSFETs)
  • Control Board
    Processes motion commands and implements control algorithms
    Material: Printed Circuit Board with microcontrollers
  • Feedback Interface
    Receives and processes encoder/resolver signals for closed-loop control
    Material: Electronic components and connectors
  • Heat Sink Part
    Dissipates heat generated by power electronics
    Material: Aluminum alloy

Application & selection

Application Fit & Sizing Matrix

Operational Limits
current: Up to 50A continuous, 100A peak (output)
voltage: 24V DC to 480V AC (input range)
humidity: 5% to 95% non-condensing
temperature: 0°C to 55°C (operating), -20°C to 85°C (storage)
Media Compatibility
✓ Industrial robotic arms ✓ CNC machine axes ✓ Automated conveyor systems
Unsuitable: Explosive atmospheres (ATEX Zone 0/20)
Sizing Data Required
  • Motor torque rating (Nm)
  • Required speed range (RPM)
  • System inertia (kg·m²)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Overheating and thermal degradation
Cause: Inadequate cooling, excessive ambient temperatures, or prolonged operation beyond rated duty cycles leading to insulation breakdown and component failure.
Power stage failure (IGBT/MOSFET damage)
Cause: Voltage spikes from poor power quality, improper grounding, or regenerative energy mismanagement causing semiconductor breakdown.
Maintenance Indicators
  • Audible high-pitched whining or buzzing from the drive indicating capacitor or transformer issues
  • Visible discoloration, bulging, or leaking from electrolytic capacitors on the PCB
Engineering Tips
  • Implement regular thermal imaging inspections to identify hot spots and ensure cooling systems (fans, heatsinks) remain clean and functional
  • Install proper line reactors or filters to protect against power quality issues and ensure correct regenerative braking resistor sizing

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 13849-1: Safety of machinery - Safety-related parts of control systems CE Marking (EU Directive 2014/35/EU): Low Voltage Directive for electrical equipment IEC 61800-5-1: Adjustable speed electrical power drive systems - Safety requirements

Quoted from the published standard.

Manufacturing Precision
  • Mounting hole alignment: +/-0.05mm
  • PCB component placement accuracy: +/-0.1mm
Quality Inspection
  • High-potential (hipot) test: Dielectric strength verification
  • Thermal cycling test: Temperature endurance validation
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Manufacturers of Servo Drive Module

2 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Shanghai Automation Instrumentation Co., Ltd
Shanghai, CN
Also makes: Ball Valve, Pressure Controller, Flow Controller and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Servo amplifier”
View source page ↗ shanghai-automation.com · recorded 2026-08-30
View profile Send enquiry
Shenzhen SINE Electric Co., Ltd.
Shenzhen, Guangdong, CN
Also makes: Variable Frequency Drive, Battery System, Motion Controller and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “1kW servo controller”
View source page ↗ sineedrive.com · recorded 2026-09-08
View profile Send enquiry

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Frequently Asked Questions

What is the function of a servo drive module?

A servo drive module regulates the power supplied to a servo motor based on low-power command signals from a robot controller. It converts these signals into high-power currents to precisely control the motor's position, velocity, and torque.

What are the typical supply voltage and power ranges?

The module typically operates on a three-phase AC supply of 200–480 V AC (per IEC 60038) and provides a rated power range of 0.4–15 kW. Continuous output current ranges from 2–60 A, with peak output current up to 120 A.

What environmental conditions can the module withstand?

The operating temperature range is -10 to 50 °C (with derating above 40 °C), storage temperature is -20 to 70 °C, and non-condensing humidity is 5–95% RH. Protection class ranges from IP20 to IP65 per IEC 60529.

How do I select the right servo drive module?

Selection depends on the motor's rated power and current, required speed and control accuracy, and environmental conditions. Always verify the module's specifications against your application and confirm with the legal manufacturer or supplier.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Robot Controller
View system integration details

Industrial Ecosystem & Supply Chain Structure

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Servo Drive Module.

Servo Amplifier Servo Controller

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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