TREND NX Variable Speed Drives - Manual (Page 24)

SAFETY vacon • 7
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1
1. SAFETY
1.1 Warnings
1 The Vacon NX frequency converter is meant for fixed installations only.
2 Do not perform any measurements when the frequency converter is
connected to the mains.
3 Do not perform any voltage withstand tests on any part of Vacon NX.
There is a certain procedure according to which the tests shall be per-
formed. Ignoring this procedure may result in damaged product.
4 The frequency converter has a large capacitive leakage current.
5 If the frequency converter is used as a part of a machine, the machine
manufacturer is responsible for providing the machine with a main
switch (EN 60204-1).
6 Only spare parts delivered by Vacon can be used.
7 The motor starts at power-up if the start command is 'ON'. Furthermore,
the I/O functionalities (including start inputs) may change if parameters,
applications or software are changed. Disconnect, therefore, the motor if
an unexpected start can cause danger.
8 Prior to measurements on the motor or the motor cable, disconnect the
motor cable from the frequency converter.
9 Do not touch the components on the circuit boards. Static voltage dis-
charge may damage the components.
1.2 Safety
instructions
1 The components of the power unit of the frequency converter are live
when Vacon NX is connected to mains potential. Coming into contact
with this voltage is extremely dangerous and may cause death or se-
vere injury. The control unit is isolated from mains potential.
2 The motor terminals U, V, W and the DC-link/brake resistor terminals
are live when Vacon NX is connected to mains, even if the motor is not
running.
3 After disconnecting the frequency converter from the mains, wait until
the fan stops and the indicators on the keypad go out (if no keypad is
attached see the indicators on the cover). Wait 5 more minutes before
doing any work on Vacon NX connections. Do not even open the cover
before this time has expired.
4 The control I/O-terminals are isolated from the mains potential. How-
ever, the relay outputs and other I/O-terminals may have a dangerous
control voltage present even when Vacon NX is disconnected from mains.
5 Before connecting the frequency converter to mains make sure that the
Vacon NX front and cable covers are closed.
ONLY A COMPETENT ELECTRICIAN MAY CARRY OUT
THE ELECTRICAL INSTALLATION
WARNING