This document describes a variable-speed drive concept for belt conveyor systems developed by ABB Process Industries in Germany for the coal mining and materials handling industry. This concept uses standard squirrel-cage motors and frequency converters to significantly reduce power consumption and mechanical wear.
The document presents ABB's variable‑speed drive concept for modern belt‑conveyor systems, highlighting reduced power consumption, lower mechanical wear, and high availability. It outlines the drive architecture, including grid‑side and motor‑side inverters, and explains how the system integrates with ABB Advant OSC® control.
Key technical aspects such as the use of ACS 600 frequency converters, HXR six‑pole motors, IGBT semiconductors, and Direct Torque Control (DTC) are detailed, along with cooling solutions, diagnostic tools, and performance criteria like power factor and THD limits.
| Supply voltage | 690 V |
|---|---|
| Motor type | HXR six‑pole totally enclosed fan‑cooled squirrel‑cage |
| Frequency converter model | ACS 600 |
| Control concept | Direct Torque Control (DTC) |
| Power factor | 0.95 |
| Total harmonic distortion limit | < 10 % |
| Operation mode | 4‑quadrant |
| Semiconductor technology | IGBT |
They are low‑voltage drives for a supply voltage of 690 V.
The converters use Direct Torque Control (DTC).
The specified power factor is 0.95.
THD must be less than 10 %.