8 vacon
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1
1.
SAFETY
1.1
Warnings
1
The components of the power unit of the inverter are live when the
VACON
®
NX is connected to DC supply. Coming into contact with this
voltage is extremely dangerous and may cause death or severe
injury. The control unit is isolated from mains potential.
2
The DC supply and motor terminals are live when the VACON
®
NX is
connected to DC supply, even if the motor is not running.
3
The control I/O-terminals are isolated from the mains potential.
However, the relay outputs and other I/O-terminals may have dangerous
control voltage present even when the VACON
®
NX is disconnected from
the DC supply.
4
The inverter has a large capacitive leakage current.
5
If the inverter 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 manufacturer can be used.
1.2
Safety instructions
1
The VACON
®
NX inverter is meant for fixed installations only.
2
Do not perform any measurements when the inverter is connected to the
DC supply.
3
After having disconnected the inverter from the DC supply, wait until the
fan stops and the indicators on the keypad go out (if no keypad is
attached see the indicator through the keypad base). Wait 5 more
minutes before doing any work on VACON
®
NX connections. Do not even
open the cover before this time has expired.
4
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.
5
Prior to measurements on the motor or the motor cable, disconnect the
motor cable from the inverter.
6
Do not touch the components on the circuit boards. Static voltage dis-
charge may damage the components.
7
Before connecting the inverter to DC supply, make sure that the VACON
®
NX front and cable covers are closed.
ONLY A COMPETENT ELECTRICIAN MAY CARRY OUT
THE ELECTRICAL INSTALLATION
WARNING