This document is about Altivar 21 variable speed drive installation manual, which provides detailed information about the function and usage of the drive.
This guide covers safety precautions, handling, and storage requirements for the Altivar 21 variable‑speed drive. Only qualified personnel should perform installation, and the manual stresses disconnecting power, waiting 15 minutes for DC bus discharge, and using insulated tools to avoid electric shock or arc‑flash hazards.
The document details the installation process, including mounting methods, wiring of line supply, motor, control and speed reference, as well as drive ratings, dimensions, and environmental limits. Additional sections address grounding, EMC compliance, motor thermal protection, and special considerations for impedance‑grounded systems.
| Supply voltage | 200‑240 V, 50/60 Hz (three‑phase) |
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Only qualified personnel should install the drive, power must be disconnected, a “DO NOT TURN ON” label applied, all power must be locked out, and you must wait 15 minutes for DC bus capacitors to discharge before servicing.
Store the drive in a clean, dry area with ambient temperature between –25 °C and +70 °C, and keep it in its original packaging until ready to install.
Connect the motor leads to the motor terminals, connect the line supply to the power terminals, connect control wiring and the speed‑reference input, and follow the wiring recommendations in the manual.