Safety; Warnings; Safety Instructions - Vacon NXL User Manual

Safety

1.
SAFETY
ONLY A COMPETENT ELECTRICIAN MAY CARRY OUT
1.1

Warnings

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2
3
WARNING
4
5
6
HOT SURFACE
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1.2

Safety instructions

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2
3
5
6
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24-hour support: +358-40-8371 150 • Email: vacon@vacon.com
THE ELECTRICAL INSTALLATION
The components of the power unit of the frequency converter are live
when Vacon NXL is connected to mains potential. Coming into contact
with this voltage is extremely dangerous and may cause death or
severe injury. The control unit is isolated from the mains potential.
The motor terminals U, V, W (T1, T2, T3) and the DC-link/brake resistor
terminals –/+ (in Vacon NXL ≥1.1 kW) are live when Vacon NXL is
connected to mains, even if the motor is not running.
The control I/O-terminals are isolated from the mains potential.
However, the relay outputs and other I/O-terminals may have a
dangerous control voltage present even when Vacon NXL is disconnected
from mains.
The earth leakage current of Vacon NXL exceeds 3.5mA a.c. According
to EN61800-5-1, a reinforced protective ground connection must be
ensured See Chapter 1.3.
.
If the frequency converter is used as a part of a machine, the machine
manufacturer is responsible for providing the machine with a
disconnecting device (EN60204-1).
Only spare parts delivered by Vacon can be used.
The heat sink of types MF2 and MF3 may be hot when the frequency
converter is in use. Coming into contact with the heat sink may cause
burns.
The Vacon NXL frequency converter is meant for fixed installations only.
Do not perform any measurements when the frequency converter is
connected to the mains.
After disconnecting the frequency converter from the mains, wait until
the fan stops and the indicators on the display go out. Wait 5 more
minutes before doing any work on Vacon NXL connections.
Do not perform any voltage withstand tests on any part of Vacon NXL.
There is a certain procedure according to which the tests shall be
performed. Ignoring this procedure may result in damaged product.
Prior to measurements on the motor or the motor cable, disconnect the
motor cable from the frequency converter.
Do not touch the IC-circuits on the circuit boards. Static voltage
discharge may damage the components.
vacon • 7
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