Installation; Safety Information - Danfoss VLT FC Series Installation Manual

IGBT Module Replacement for D1h–D8h Drives
Installation Guide

2 Installation

2.1 Safety Information

QUALIFIED PERSONNEL
Only qualified personnel are allowed to install the parts described in these installation instructions.
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Disassembly and reassembly of the drive must be done in accordance with the corresponding service guide.
ELECTRICAL SHOCK HAZARD
VLT® FC series drives contain dangerous voltages when connected to mains voltage. Improper installation, and installing or serv-
icing with power connected, can cause death, serious injury, or equipment failure.
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Only use qualified electricians for the installation.
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Disconnect the drive from all power sources before installation or service.
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Treat the drive as live whenever the mains voltage is connected.
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Follow the guidelines in these instructions and local electrical safety regulations.
DISCHARGE TIME (20 MINUTES)
The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High voltage can be
present even when the warning indicator lights are off.
Failure to wait 20 minutes after power has been removed before performing service or repair work can result in death or serious
injury.
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Stop the motor.
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Disconnect AC mains, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
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Wait 20 minutes for the capacitors to discharge fully before performing any service or repair work.
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Measure the voltage level to verify full discharge.
ELECTROSTATIC DISCHARGE
Electrostatic discharge can damage components.
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Ensure discharge before touching internal drive components, for example by touching a grounded, conductive surface or by
wearing a grounded armband.
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