This document is the user guide for Mentor II DC Drives 25A to 1850A output from Control Techniques
This user guide covers safety information, compliance requirements, and general installation advice for the Mentor II DC variable‑speed drives. It emphasizes qualified personnel, proper isolation, and adherence to relevant regulations before any work begins.
The document details the drive’s features, electrical and mechanical installation, parameter settings, diagnostic procedures, and serial communication interfaces, helping users configure and maintain drives in single‑ended or four‑quadrant configurations.
| Maximum input voltage to drive (optional) | 525 V +10% |
|---|---|
| Maximum input voltage to drive (special order) | 660 V +10% |
| Output reference voltage tolerance | 10 V ±5% |
| Current feedback resolution | 0.1 % |
| Current loop linearity | 2 % (bandwidth 80 Hz) |
Mains supplies should be removed and left removed for a minimum of 2 minutes before any servicing work is performed.
The drive uses 6‑pulse firing of output thyristors and can be optionally configured to series or parallel 12‑pulse operation.
The Stop and Start inputs of the drive do not remove dangerous voltages from the terminals; an interlock must be installed for safety.
The drive must not be subjected to excessive physical force and must be used within the specified environmental limits described in the guide.