Commissioning; Safety; Commissioning Of The Frequency Converter - Honeywell NX series User Manual

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104(110)
8.

COMMISSIONING

8.1

Safety

Before commissioning, note the following directions and warnings:
WARNING
HOT SURFACE
8.2

Commissioning of the frequency converter

1 Read carefully the safety instructions in Chapter 1 and above and follow them.
2 After the installation, pay attention to:
- that both the frequency converter and the motor are grounded.
- that the mains and motor cables comply with the requirements given in Chapter 6.1.1.
- that the control cables are located as far as possible from the power cables (see Chapter
6.1.5, step 3) , the shields of the shielded cables are connected to protective earth
wires may not touch the electrical components of the frequency converter.
- that the common inputs of digital input groups are connected to +24V or ground of the I/O
terminal or the external supply.
3 Check the quality and quantity of cooling air (chapter 5.2 and Table 5-11).
4 Check the inside of the frequency converter for condensation.
5 Check that all Start/Stop switches connected to the I/O terminals are in Stop-position.
6 Connect the frequency converter to mains.

COMMISSIONING

Internal components and circuit boards of the frequency converter (ex-
1
cept for the galvanically isolated I/O terminals) are live when NX is
connected to mains potential. Coming into contact with this voltage is
extremely dangerous and may cause death or severe injury.
The motor terminals U, V, W and the DC-link/brake resistor terminals –/+
2
are live when NX is connected to mains, even if the motor is not
running.
The control I/O-terminals are isolated from the mains potential. However,
3
the relay outputs and other I/O-terminals may have a dangerous control
voltage present even when NX is disconnected from mains.
Do not make any connections with the frequency converter connected to
4
the mains.
After having disconnected the frequency converter from the mains, wait
5
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 min-
utes before doing any work on NX connections. Do not even open the
cover before this time has expired.
Before connecting the frequency converter to mains make sure that the
6
NX front cover is closed.
When running, the side of converter FR8 is burning hot. Do not touch
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with hands!
When running, the back of frequency converter FR6 is burning hot.
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Therefore it MUST NOT be mounted onto a surface which is not fireproof.
. The