Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 234

Packaged rooftop cooling units with gas heat, optional electric heat, or hydronic heat and comfortlink controls version 10.x
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Using parameter group 34, the middle of the LCD display can be
configured to display 3 parameter values. The default display
shows parameters 0103 (OUTPUT FREQ) in percentages, 0104
(CURRENT) in amperes, and 0120 (AI1) in milliamperes.
The bottom corners of the LCD display show the functions cur-
rently assigned to the 2 soft keys. The lower middle displays
the current time (if configured to show the time).
The first time the drive is powered up, it is in the OFF mode.
To switch to local hand-held control and control the drive using
the control panel, press and hold the HAND button. Pressing
the HAND button switches the drive to hand control while
keeping the drive running. Press the AUTO button to switch to
remote input control. To start the drive, press the HAND or
AUTO buttons; to stop the drive, press the OFF button.
To adjust the speed in HAND mode, press the UP or DOWN
buttons (the reference changes immediately). The reference
can be modified in the local control (HAND) mode and can be
parameterized (using Group 11 reference select) to also allow
modification in the remote control mode.
PARAMETERS MODE
The Parameters mode is used to change the parameters on the
drive. To change parameters, perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu will be
displayed.
2. Use the UP or DOWN keys to highlight PARAMETERS
on the display screen and press ENTER (SOFT KEY 2).
3. Use the UP or DOWN keys to highlight the desired
parameter group and press SEL (SOFT KEY 2).
4. Use the UP or DOWN keys to highlight the desired
parameter and press EDIT (SOFT KEY 2).
5. Use the UP or DOWN keys to change the value of the
parameter.
6.
Press SAVE (SOFT KEY 2) to store the modified value.
Press CANCEL (SOFT KEY 1) to keep the previous value.
Any modifications that are not saved will not be changed.
7. Choose another parameter or press EXIT (SOFT KEY 1)
to return to the listing of parameter groups. Continue until
all the parameters have been configured and then press
EXIT (SOFT KEY 1) to return to the main menu.
NOTE: The current parameter value appears above the high-
light parameter. To view the default parameter value, press the
UP and DOWN keys simultaneously. To restore the default
factory settings, select the Carrier application macro.
Fig. C — Standard Display Example
START-UP ASSISTANT MODE
To use the Start-Up Assistant, perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu will be
displayed.
2. Use the UP or DOWN keys to highlight ASSISTANTS on
the display screen, and press ENTER (SOFT KEY 2).
APPENDIX D — VFD INFORMATION (CONT)
234
3. Use the UP or DOWN keys to highlight Commission
Drive, and press SEL (SOFT KEY 2).
4. The Start-Up Assistant will display the parameters that
need to be configured. Select the desired values and press
SAVE (SOFT KEY 2) after every change. The process
will continue until all the parameters are set. The assistant
checks to make sure that entered values are in range.
The assistant is divided into separate tasks. The user can activate
the tasks one after the other or independently. The tasks are typi-
cally done in this order: Application, References 1 and 2, Start/
Stop Control, Protections, Constant Speeds, PID Control, Low
Noise Setup, Panel Display, Timed Functions, and Outputs.
CHANGED PARAMETERS MODE
The Changed Parameters mode is used to view and edit recent-
ly changed parameters on the drive. To view the changed pa-
rameters, perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu will be
displayed.
2. Use the UP or DOWN keys to highlight CHANGED PAR
on the display screen and press ENTER (SOFT KEY 2). A
list of the recently changed parameters will be displayed.
3. Use the UP or DOWN keys to highlight the desired
parameter group and press EDIT (SOFT KEY 2) to change
the parameter if desired.
4. Press EXIT (SOFT KEY 1) to exit the Changed Parame-
ters mode.
DRIVE PARAMETER BACKUP MODE
The drive parameter back-up mode is used to export the param-
eters from one drive to another. The parameters can be upload-
ed from a VFD to the removable control panel. The control
panel can then be transferred to another drive and the parame-
ters downloaded into memory.
Depending on the motor and application, there are 2 options
available. The first option is to download all parameters. This
copies both application and motor parameters to the drive from
the control panel. This is recommended when using the same
application for drives of the same size. This can also be used to
create a backup of the parameters group for the drive.
The second option downloads only the application parameters
to the drive. This is recommended when using the same appli-
cation for drives of different sizes. Parameters 9905, 9906,
9907, 9908, 9909, 1605, 1607, 5201, and group 51 parameters
and internal motor parameters are not copied.
Upload All Parameters
To upload and store parameters in the control panel from the
VFD, perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu will be
displayed.
2. Use the UP or DOWN keys to highlight PAR BACKUP on
the display screen and press ENTER (SOFT KEY 2).
3. Use the UP or DOWN keys to highlight UPLOAD TO
PANEL and press SEL (SOFT KEY 2).
4. The text "Copying Parameters" will be displayed with a
progress indicator. To stop the process, select ABORT
(SOFT KEY 1).
5. When the upload is complete, the text "Parameter upload
successful" will be displayed.
6. The display will then return to the PAR BACKUP menu.
Select EXIT (SOFT KEY 1) to return to the main menu.
7. The control panel can now be disconnected from the drive.

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