BAUMULLER BUS21L-7,515-31-224

Product Name

BUS21L Series Servo Drive Power Module

Product Overview

The Baumüller BUS21L-7.5/15-31-224 is a power unit from the BUS21 servo drive series with 7.5 kW rated output power. Used together with a matching control unit, it delivers high-performance servo motor control for demanding industrial drive applications.

Category:
Description

Technical Specifications

Rated output power 7.5 kW; 3-phase 380–480 VAC input, 50/60 Hz; 540 V nominal DC link voltage; adjustable chopping frequency 2/4/8 kHz; external 24 VDC electronics supply with diagnostic capability; air cooling; protection class IP20.

Functional Features

Wide input voltage range; adjustable switching frequency for different applications; comprehensive built-in protection functions; supports various fieldbus communication expansions; modular design for easy maintenance.

Application Scenarios

Printing machinery, packaging production lines, machine tool spindle drives, robotic drive systems, material handling equipment.

Performance Parameters

Operating ambient temperature 0 °C to +45 °C, derating required above this range; rated operation up to 1000 m altitude; integrated over-current, over-voltage, overload, over-temperature and short-circuit protection.

Material Composition

Sheet metal enclosure, aluminum heat sink, IGBT power modules, industrial-grade control circuit boards.

Structural Features

Book-type vertical mounting design; cooling fan on top; status indicators on front; power and motor terminals at bottom; supports close side-by-side installation.

Working Principle

It rectifies 3-phase AC input into DC link voltage, then outputs 3-phase AC with adjustable frequency and voltage via the IGBT inverter stage to drive the servo motor. Working with the control unit, it implements vector control for high-precision torque, speed and position regulation.

Installation Requirements

Install vertically inside control cabinet with reserved ventilation space above and below; use shielded power cables with appropriate cross-section; connect motor and drive to protective earth reliably; configure suitable braking unit and resistor for the DC link.

Usage Notes

Confirm input voltage matches equipment rating before power-on; do not disconnect motor connection during operation; clean and replace cooling fan periodically; all maintenance must be performed after power-off and full DC link discharge.

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