179
APPENDIX C — VFD INFORMATION (cont)
VFD Operation
The VFD keypad is shown in Fig. B. 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 display 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 control of the drive to local (hand held)
control. The HELP button is used to access the help screens.
START UP BY CHANGING PARAMETERS INDIVIDUALLY
Initial start-up is performed at the factory. To start up the VFD
with by changing individual 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 pa-
rameter.
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 application macro “HVAC Default.”
VFD Modes
The VFD has several different modes for configuring, operat-
ing, and diagnosing the VFD. The modes are:
• Standard Display mode — shows drive status information
and operates the drive
• Parameters mode — edits parameter values individually
• Start-up Assistant mode — guides the start-up and config-
uration
• Changed Parameters mode — shows all changed parameters
• Drive Parameter Backup mode — stores or uploads the
parameters
• Clock Set mode — sets the time and date for the drive
• I/O Settings mode — checks and edits the I/O settings
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 informa-
tion as described below. See Fig. C.
The top line of the LCD display shows the basic status infor-
mation of the drive. The HAND icon indicates that the drive
control is local from the control panel. The AUTO icon indi-
cates 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
rotating 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 indi-
cates 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
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.
Fig. B — VFD Keypad
Fig. C — Standard Display Example
Summary of Contents for WEATHERMAKER 48A2020
Page 112: ...112 Fig 20 Typical Main Control Box Wiring Schematic 48 50A Units ...
Page 113: ...113 Fig 21 Typical Auxiliary Control Box Wiring Schematic ...
Page 114: ...114 Fig 22 Typical 2 Stage Gas Heat Wiring Schematic Size 060 Units Shown ...
Page 115: ...115 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown TO NEXT PAGE ...
Page 116: ...116 Fig 23 Typical Staged Gas Heat Wiring Schematic Size 060 Units Shown cont ...
Page 117: ...117 Fig 24 Typical Electric Heat Control Schematic 50 Series Size 060 Units Shown ...
Page 118: ...118 Fig 25 Typical Controls Option Wiring Schematic SW1 SW2 OR DEHUMIDIFY SWITCH ...
Page 119: ...119 Fig 26 Typical Power Schematic 48 50A2 A3 A4 A5 060 Unit Shown ...
Page 120: ...120 Fig 27 Typical Power Schematic of Greenspeed Low Ambient Option 48 50A 060 Unit Shown ...
Page 121: ...121 Fig 28 Typical Small Chassis Component Location Size 020 035 Units ...
Page 122: ...122 Fig 29 Typical Large Chassis Component Locations Size 040 060 Units ...
Page 185: ...185 APPENDIX C VFD INFORMATION cont Fig F Internal Enclosure Fan Replacement A48 7716 ...