8 • vacon
SAFETY
Tel. +358 (0)201 2121 • Fax +358 (0)201 212 205
1
1.
SAFETY
1.1
Warnings
1
The Vacon NX Liquid-Cooled drive is meant for fixed installations only.
2
Do not perform any measurements when the frequency converter is connected
to the mains. Prior to measurements on the motor or the motor cable, discon-
nect the motor cable from the frequency converter.
3
Do not perform any voltage withstand tests on any part of Vacon NX Liquid-
Cooled drive. There is a certain procedure according to which the tests shall be
performed. Ignoring this procedure may result in damaged product.
4
The frequency converter has a capacitive leakage current.
5
If the frequency converter is used as a part of a machine, the machine manu-
facturer 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, applica-
tions or software are changed. Disconnect, therefore, the motor if an unex-
pected start can cause danger.
8
Do not touch the components on the circuit boards. Electrostatic 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 Liquid-Cooled drive 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.
2
The motor terminals U, V, W and the DC-link/brake resistor terminals are live
when Vacon NX Liquid-Cooled drive is connected to mains, even if the motor
is not running.
3
After disconnecting the frequency converter from the mains, wait until the indi-
cators 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 Liquid-Cooled
drive connections. Do not touch the enclosure before this time has expired.
4
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 NX Liquid-Cooled drive is disconnected from mains.
5
Before connecting the NX Liquid-Cooled drive to mains, ensure the function-
ality of the coolant circulation and check the circulation for possible leaks.
6
Before connecting the drive to mains make sure that the enclosure door is
closed.
ONLY A COMPETENT ELECTRICIAN MAY CARRY OUT
THE ELECTRICAL INSTALLATION
WARNING