Table of Contents
Advertisement
VFD REMOTE KEYPAD
NOTE: The following only applies when a unit with the factory-
installed 2-Speed Indoor Fan system option is equipped with the
field-installed Remote VFD Keypad (P/N CRDISKIT001A00)
ACH550/ACS320 or (P/N CRDISKIT003A00) ACH580.
On single package rooftop units and fan coils equipped with the
2-Speed Indoor Fan system option, the supply fan speed is con-
trolled by a 3-phase VFD. See Fig. 10-27 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. Termi-
nal designations are shown in the Terminal Designation table (see
Tables 32 and 33. Configurations are shown in the VFD Keypad
Parameters tables (see Tables A-G on pages 41-48).
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 33.
ACH550/ACS320 Operation with Remote Keypad
The remote keypad used with ACH550/ACS320 VFDs is shown
in Fig. 31. 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. 31 — 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.
CONFIGURATION OVERRIDE HAZARD
Do not use 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. Continue
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/ASC320 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.
Up
•
Parameters mode — edits parameter values individually.
Soft
•
Start-up Assistant mode — guides the start up and
Key 2
configuration.
•
Changed Parameters mode — shows all changed parameters.
•
Drive Parameter Backup mode — stores or uploads the pa-
Help
rameters.
(Always Available)
•
Clock Set mode — sets the time and date for the drive.
Hand
•
I/O Settings mode — checks and edits the I/O settings.
26
CAUTION
Advertisement
Table of Contents
