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APPENDIX I — OPTIONAL GREENSPEED/LOW AMBIENT CONTROL (CONT)
VFD Operation
The VFD keypad is shown in Fig. AO. The function of SOFT
KEYS 1 and 2 change depending on what is displayed on the
screen. The function of SOFT KEY 1 matches the word in the
lower left-hand box on the display screen. The function of SOFT
KEY 2 matches the word in the lower right-hand box on the dis-
play screen. If the box is empty, then the SOFT KEY does not
have a function on that specific screen. The UP and DOWN keys
are used to navigate through the menus. The OFF key is used to
turn off the VFD. The AUTO key is used to change control of the
drive to automatic control. The HAND key is used to change con-
trol of the drive to local (hand held) control. The HELP button is
used to access the help screens.
For the VFD to operate on the units covered by this document, the
drive must be set in AUTO mode. The word "AUTO" will appear
in the upper left corner of the VFD display. Press the AUTO but-
ton to set the drive in AUTO mode.
Fig. AO — VFD Keypad
START UP WITH ASSISTANT — DO NOT USE
Initial start-up has been performed at the factory. Use of the start
up assistant will override factory VFD configurations.
STANDARD DISPLAY MODE
Use the standard display mode to read information on the drive
status and operate the drive. To reach the standard display mode,
press EXIT until the LCD display shows status information as de-
scribed below. See Fig. AP.
Fig. AP — Standard Display Example
The top line of the LCD display shows the basic status informa-
tion of the drive. The HAND icon indicates that the drive control
is local from the control panel. The AUTO icon indicates that the
drive is in remote control mode, such as the basic I/O (X1) or field
bus.
The arrow icon indicates the drive and motor rotation status. A ro-
tating arrow (clockwise or counterclockwise) indicates that the
drive is running and at setpoint and the shaft direction is forward
or reverse. A rotating blinking arrow indicates that the drive is
running but not at setpoint. A stationary arrow indicates that the
drive is stopped. For Carrier rooftop units, the correct rotation is
counterclockwise.
The upper right corner shows the frequency setpoint that the drive
will maintain.
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 two 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 in-
put 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 but-
tons (the reference changes immediately). The reference can be
modified in the local control (HAND) mode, and can be parame-
terized (using Group 11 reference select) to also allow modifica-
tion 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 dis-
played.
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 parame-
ter group and press SEL (SOFT KEY 2).
4. Use the UP or DOWN keys to highlight the desired parame-
ter 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 highlight
parameter. To view the default parameter value, press the UP and
DOWN keys simultaneously. To restore the default factory set-
tings, select the Carrier application macro.
CHANGED PARAMETERS MODE
The Changed Parameters mode is used to view and edit recently
changed parameters on the drive. To view the changed parameters,
perform the following procedure:
1. Select MENU (SOFT KEY 2). The Main menu will be dis-
played.
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 parame-
ter group and press EDIT (SOFT KEY 2) to change the pa-
rameter if desired.
4. Press EXIT (SOFT KEY 1) to exit the Changed Parameters
mode.
272
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