ABB ACS320 Supplemental Manual page 11

VFD PARAMETER OVERVIEW
"VFD Parameters" are instructions that the Variable Frequency Drives follow. They can be adjusted by
using the keypads on the VFDs. In some control confi gurations, they will need to be changed from the
settings as shipped in the unit to interface with your control system.
To view the VFD's Parameters from the keypad, press the MENU softkey. Press up/down arrows to highlight
PARAMETERS, then select it by pressing the ENTER softkey.
TO VIEW ALL VFD PARAMETERS
VFD must be powered up – something will be showing on the LED display.
1. If EXIT is displayed above the left softkey, press softkey repeatedly until MENU appears above the right softkey.
2. Press the MENU softkey.
3. Use the UP/DOWN arrows to scroll the display until PARAMETERS is selected, then press the ENTER softkey.
4. You will see a numbered list of Parameter "groups" – those numbers are the fi rst two digits of the
Parameters in each group.
5. Press the SEL softkey to view all the Parameters in each Group. Use the UP/DOWN buttons to scroll
through the parameters. As each Parameter is selected, its value will be displayed.
TO LOCK OR UNLOCK PARAMETERS
VFDs are shipped locked to prevent accidental changes to parameter settings. If changes to factory parameter
settings are desired, the VFD will need to be unlocked for editing the settings.
To unlock all Parameters if Parameter 1602
reads LOCKED:
1. Select Parameter 1603 PASS CODE: press
EDIT softkey.
2. Use the UP / DOWN buttons to scroll to 358: press
SAVE softkey (the entry will automatically revert
back to 0); press EXIT softkey.
3. Scroll up to Parameter 1602 PARAMETER LOCK
which reads LOCKED; press EDIT softkey.
4. Scroll to OPEN; press SAVE softkey; press
EXIT softkey
Parameters are now unlocked. You can view and
change them.
TO CHANGE VFD PARAMETERS (WHEN
PARAMETERS ARE UNLOCKED)
1. Select the Parameter you want to edit (see above).
Press the EDIT softkey.
2. Use the UP/DOWN arrows to scroll through the
available settings for that Parameter.
3. Press the SAVE softkey to set the Parameter to
the selected value.
ABB VARIABLE FREQUENCY DRIVES
To lock Parameters after changes are made if
Parameter 1602 reads OPEN:
1. Select Parameter 1603 PASS CODE: press
EDIT softkey.
2. Use the UP / DOWN buttons to scroll to 358: press
SAVE softkey (the entry will automatically revert
back to 0); press EXIT softkey.
3. Scroll up to Parameter 1602 PARAMETER LOCK
which reads OPEN; press EDIT softkey.
4. Scroll to LOCKED; press SAVE softkey; press
EXIT softkey.
Parameters are now locked. You can view them but
you cannot change them.
TO VIEW ONLY CHANGED VFD PARAMETERS
1. If EXIT is displayed above the left softkey, press
softkey repeatedly until MENU appears above the
right softkey.
2. Press the MENU softkey.
3. Use the UP/DOWN arrows to scroll the display
until CHANGED PAR is selected, then press the
ENTER softkey.
4. All Parameters that have been changed from
the HVAC Application Macro default values are
displayed. Use the UP/DOWN buttons to view
them all.
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