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VFD REMOTE KEYPAD
NOTE: The following only applies when a unit with the factory-
installed SAV™ option is equipped with the field-installed
Remote VFD Keypad (Part Number: CRDISKKIT001A00)
ACH550/ACS320 or (Part Number: CRDISKKIT003A00)
ACH580.
On 48/50 Series single package rooftop units and 40RU fan coils
equipped with the SAV option, the supply fan speed is controlled
by a 3-phase VFD. See Fig. 6-23 for the location of the VFD in the
units covered by this supplement.
The VFD is powered during normal operation to prevent conden-
sation from forming on the boards during the off mode and is
stopped by driving the speed to 0. The units use ABB VFDs. The
interface wiring for the VFDs is shown in Fig. 29 and 30 (on
page 20). Terminal designations are shown in the Terminal Desig-
nation table (see Tables 12 and 13 on page 20). Configurations are
shown in the VFD Keypad Parameters tables (see Tables 36-42 on
pages 75-82).
Details on ACH550/ACS320 operation with remote keypad start
below. For details on remote keypad for ACH580 VFDs, see
"ACH580 Operation with Remote Keypad" on page 69.
ACH550/ACS320 Operation with Remote Keypad
The remote keypad used with ACH550/ACS320 VFDs is shown
in Fig. 53. The functions of SOFT KEYS (1 and 2) change de-
pending 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.
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 hand corner of the VFD display. Press the AUTO
button to set the drive in AUTO mode.
Status
LED
(GREEN when
Normal, If Flasing
RED, See
Diagnostics.)
Soft
Key 1
Down
Auto
Off
Fig. 53 — ACH550/ACS320 VFD Keypad
START UP WITH ASSISTANT
Initial start-up has been performed at the factory. Use of the start
up assistant will override factory VFD configurations.
CAUTION
CONFIGURATION OVERRIDE HAZARD
Do not use ABB or Carrier start-up assistant on this VFD
application. Use of start-up assistant will override the factory
VFD configurations.
START UP BY CHANGING PARAMETERS
INDIVIDUALLY
Initial start-up is performed at the factory. To start up the VFD by
changing individual 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 320/550 (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/BACK (SOFT
KEY 1) to return to the listing of parameter groups. Con-
tinue until all the parameters have been configured and
then press EXIT/BACK (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
settings, select the application macro "HVAC Default."
ACH550/ACS320 only.
ACH550/ACS320 VFD Modes
The VFD has several different modes for configuring, operating,
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
configuration
•
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
Up
STANDARD DISPLAY MODE
Use the standard display mode to read information on the drive
Soft
Key 2
status and operate the drive. To reach the standard display mode,
press EXIT until the LCD display shows status information as
described below. (See Fig. 54.)
Help
(Always Available)
Hand
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 or field bus.
The arrow icon indicates the drive and motor rotation status. A
rotating arrow (clockwise or counterclockwise) indicates that
63
100.0 %SP
1.9 A
10.0 Vdc
Fig. 54 — Standard Display Example
60.0Hz
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