Variable Speed Drive for RAP Feeder Systems | Specifications & Selection

Product Specifications

Technical details and manufacturing context for Variable Speed Drive

Definition

The Variable Speed Drive is a component used in machinery and equipment manufacturing, specifically as part of the RAP Feeder system. It precisely regulates the feeding mechanism's motor speed to ensure consistent material flow rates, optimize energy consumption, and enable process adjustments for different production requirements. The drive converts incoming AC power to DC, then inverts it back to AC at a variable frequency and voltage using pulse-width modulation (PWM) techniques, thereby controlling motor speed and torque according to set parameters. Key specifications include a rated power range of 0.75–500 kW, input voltage of 380–480 V AC (3-phase, ±10% tolerance, per IEC 60038), output frequency of 0–400 Hz, overload capacity of 150% for 60 seconds (heavy duty, per IEC 61800-2), efficiency of ≥97% at rated load (per IEC 61800-9-2), control accuracy of ±0.1%, ambient temperature range of -10–50°C (derate above 40°C, per IEC 61800-2), protection rating of IP20–IP55 (per IEC 60529), enclosure material of aluminum/steel with corrosion-resistant coating, and weight of 5–200 kg depending on power rating. Materials used include electronic components, heat sink aluminum, printed circuit board (PCB), and plastic housing. The drive is selected based on motor power and application requirements. For procurement, verify model-specific values and standards with the legal manufacturer or supplier, as the listed ranges are reference values. The drive is not a standalone product but a component integrated into a larger system. Maintenance signals include abnormal heating, error codes, or reduced performance. Failure boundaries are defined by the manufacturer's specifications; exceeding them may cause damage. Always consult the technical documentation for installation, operation, and maintenance guidelines.

Working Principle

The Variable Speed Drive operates by first converting incoming AC power to DC using a rectifier. The DC bus is then smoothed by capacitors. An inverter stage uses pulse-width modulation (PWM) to switch the DC back to AC at a variable frequency and voltage. By adjusting the PWM pattern, the drive controls the motor's speed and torque. The control algorithm compares the actual motor speed with the setpoint and adjusts the output accordingly, achieving high accuracy. The drive also monitors parameters like current and temperature to protect the motor and itself.

Common Materials

Electronic components, Heat sink aluminum, Printed circuit board (PCB), Plastic housing

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Power	0.75–500 kW	Select based on motor power
Input Voltage	380–480 V AC	3-phase, ±10% toleranceIEC 60038
Output Frequency	0–400 Hz	Adjustable speed range
Overload Capacity	150% for 60s	Heavy duty applicationsIEC 61800-2
Efficiency	≥97 %	At rated loadIEC 61800-9-2
Control Accuracy	±0.1 %	Speed regulation accuracy
Ambient Temperature	-10–50 °C	Derate above 40°CIEC 61800-2
Protection Rating	IP20–IP55	IP55 for dusty environmentsIEC 60529
Enclosure Material	Aluminum/Steel	Corrosion-resistant coating
Weight	5–200 kg	Depends on power rating

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

Rectifier
Converts AC input power to DC

Material: Semiconductor diodes
DC Bus Part
Filters and stores DC power

Material: Capacitors
Inverter
Converts DC back to variable frequency AC

Material: IGBT transistors
Control Board
Processes control signals and manages drive operation

Material: PCB with microcontrollers
Heat Sink Part
Dissipates heat from power components

Material: Aluminum alloy

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Variable Speed Drive.

Applied To / Applications

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

RAP Feeder

View system integration details

Manufacturers of Variable Speed Drive

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.

Machinesol

Zhejiang, CN

Also makes: Continuous Casting Machine, Variable Frequency Drive, Hydraulic Cylinders (if hydraulic) and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Sogears

Shandong, CN

Also makes: Speed Reducer/Gearbox, Planetary Gear Set, Industrial Motor and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

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Frequently Asked Questions

What is the rated power range of this variable speed drive?

The rated power range is 0.75–500 kW, selected based on motor power. Confirm the exact model for your application.

What input voltage does the drive accept?

It accepts 3-phase 380–480 V AC with ±10% tolerance, per IEC 60038. Verify compatibility with your supply.

What is the overload capacity?

The overload capacity is 150% for 60 seconds for heavy duty applications, per IEC 61800-2. This allows temporary overcurrent.

What protection ratings are available?

Protection ratings range from IP20 to IP55, per IEC 60529. IP55 is suitable for dusty environments. Choose based on installation conditions.

Data Basis

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

Preliminary Technical Classification

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pressure:	N/A (device is electronic, not in direct contact with process media)
other spec:	Input voltage: 200-600V AC typical, Output frequency: 0-400 Hz typical, Enclosure rating: IP20 to IP66 depending on model
temperature:	-10°C to +40°C (ambient operating range, derating may apply above 40°C)

Variable Speed Drive

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards