37
ENG
VFD-NXL +030220721 - rel. 2.2 - 10.05.2011
7. COMMISSIONING
7.1 Safety
Before commissioning, note the following directions and warnings:
1
Internal components and circuit boards of the frequency
converter (except for the galvanically isolated I/O terminals)
are live when CAREL VFD-NXL is connected to mains potential.
Coming into contact with this voltage is extremely dangerous
and may cause death or severe injury.
2
The motor terminals U, V, W and the DC-link/brake resistor
terminals ¬–/+ are live when CAREL VFD-NXL is connected to
mains, 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 a
dangerous control voltage present even when CAREL VFD-NXL
is disconnected from mains.
4
Do not make any connections with the frequency converter
connected to the mains.
5
After having disconnected 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 indicator through the
keypad base). Wait 5 more minutes before doing any work on
CAREL VFD-NXL connections. Do not even open the cover
before this time has expired.
6
Before connecting the frequency converter to mains make sure
that the CAREL VFD-NXL front cover is closed.
7
The heat sink of types MF2 and MF3 may be hot when the
frequency converter is in use. Coming into contact with the
heat sink may cause burns.
Tab. 7.a
7.2 Commissioning of the frequency
converter
1. Read carefully the safety instructions in Chapter 5 “Cabling and
connections“ page 16 and above and follow them.
2. After the installation, make sure that:
• both the frequency converter and the motor are grounded.
• the mains and motor cables comply with the requirements given
in paragraph “Cabling“ page 16.
• the control cables are located as far as possible from the power
cables (see paragraph “Cable and fusible dimensions” page 16, step
3) , the shields of the shielded cables are connected to protective
earth
. The wires may not touch the electrical components of
the frequency converter.
• For option boards only: make sure that the common ends 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 (paragraph 4.3 “Control
unit“ page 22).
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.
7. Set the parameters of group 1 according to the requirements of your
application. At least the following parameters should be set:
• motor nominal voltage
• motor nominal frequency
• motor nominal speed
• motor nominal current
• You will fi nd the values needed for the parameters on the motor
rating plate.
• NOTE! You can also run the Start-up Wizard. See paragraph 6.3
”Start-up wizard” page 26 for more information.
8. Perform run test without motor
Perform either Test A or Test B:
A. Controls from the I/O terminals:
a. Turn the Start/Stop switch to ON position.
b. Change the frequency reference (potentiometer)
c. Check in the Monitoring menù (M1) that the value of Output
frequency changes according to the change of frequency
reference.
d. Turn the Start/Stop switch to OFF position.
B. Control from the control keypad:
a. Change the control from the I/O terminals to the keypad as
advised in paragraph “Selection of control place“ page 29.
b. Push the Start button on the keypad .
c. Move over to the Keypad Control Menu (K3) and Keypad
Reference submenu and change the frequency reference
using the Browser buttons
.
d. Check in the Monitoring menù (M1) that the value of Output
frequency changes according to the change of frequency
reference.
e. Push the Stop button on the keypad .
9. Run the start-up tests without the motor being connected to the
process, if possible. If this is not possible, secure the safety of each
test prior to running it. Inform your co-workers of the tests.
• Switch off the supply voltage and wait up until the drive has
stopped as advised at paragraph 7.1 “Safety“ page 37, step 5.
• Connect the motor cable to the motor and to the motor cable
terminals of the frequency converter.
• See to that all Start/Stop switches are in Stop positions.
• Switch the mains ON
• Repeat test 8A or 8B.
10. Connect the motor to the process (if the startup test was run without
the motor being connected)
• Before running the tests, make sure that this can be done safely.
• Inform your co-workers of the tests.
• Repeat test 8A or 8B.
7.3 Basic parameters
On the next pages you will fi nd the list of parameters that are essential for
the commissioning of the frequency converter. You will fi nd more details
of these and other special parameters in the +030220726 manual (that
can be download from website www.carel.com).
Note! If you wish to edit the special parameters, you must set the value
of par. 2.1.22 to 0.
Column explanations:
Code Location indication on the keypad; Shows the operator the present
param. number
Parameter Name of parameter
Min Minimum value of parameter
Max Maximum value of parameter
Unit Unit of parameter value; Given if available
Default Value preset by factory
Cust Customer’s own setting
ID ID number of the parameter (used with PC tools)
On the parameter code: parameter value can only be changed after
the FC has been stopped.