Safety; Warnings; Safety Instructions - Honeywell NX series User Manual

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1.

SAFETY

1.1

Warnings

WARNING
1.2

Safety instructions

ONLY A COMPETENT ELECTRICIAN MAY CARRY OUT
THE ELECTRICAL INSTALLATION
The NX frequency converter is meant for fixed installations only.
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Do not perform any measurements when the frequency converter is con-
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nected to the mains.
Do not perform any voltage withstand tests on any part of NX. There is a
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certain procedure according to which the tests shall be performed. Ignor-
ing this procedure may result in damaged product.
The earth leakage current of NX_ frequency converters exceeds 3.5mA
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AC. According to standard 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
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manufacturer is responsible for providing the machine with a main switch
(EN 60204-1).
Only spare parts delivered by Honeywell can be used.
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The motor starts at power-up if the start command is 'ON'. Furthermore,
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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.
Prior to measurements on the motor or the motor cable, disconnect the
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motor cable from the frequency converter.
Do not touch the components on the circuit boards. Static voltage dis-
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charge may damage the components.
The components of the power unit of the frequency converter are live
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when NX 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 mains potential.
The motor terminals U, V, W and the DC-link/brake resistor terminals are
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live when NX is connected to mains, even if the motor is not running.
After disconnecting the frequency converter from the mains, wait until the
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fan stops and the indicators on the keypad go out (if no keypad is at-
tached see the indicators on the cover). Wait 5 more minutes before
doing any work on NX connections. Do not even open the cover before
this time has expired.
The control I/O-terminals are isolated from the mains potential. However,
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the relay outputs and other I/O-terminals may have a dangerous control
voltage present even when NX is disconnected from mains.
Before connecting the frequency converter to mains make sure that the
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NX front and cable covers are closed.

SAFETY