RT-SVX34V-EN
83
menu does not display)
2. Scroll down to Load & Motor, press OK
3. Select 1-2, press OK
4. Press down until parameter 1-23 is displayed.
Parameter 1-23 can then be modified by pressing OK
and pressing the Up and Down buttons.
5. When the desired selection has been made, press OK .
Should replacing the VFD become necessary, the
replacement is not configured with all of Trane's operating
parameters. The VFD must be programmed before
attempting to operate the unit.
To verify and/or program a VFD, use the following steps:
1. To modify parameters:
a. Press Main Menu twice (if TR150 drive) (press
Back if the main menu does not display)
b. Use the Up and Down buttons to find the parameter
menu group (first part of parameter number)
c. Press OK
d. Use the Up and Down buttons to select the correct
parameter sub-group (first digit of second part of
parameter number)
e. Press OK
f. Use the Up and Down buttons to select the specific
parameter
g. Press OK
h. To move to a different digit within a parameter
setting, use the Left and Right buttons (Highlighted
area indicates digit selected for change)
i. Use the Up and Down buttons to adjust the digit
j. Press Cancel to disregard change, or press OK to
accept change and enter the new setting
2. Repeat previous step for each menu selection setting in
Table 39, p. 84.
3. To reset all programming parameters back to default:
a. Go to parameter 14-22 Operation Mode
b. Press OK
c. Select Initialization
d. Press OK
e. Cut off the mains supply and wait until the display
turns off.
f. Reconnect the mains supply - the frequency
converter is now reset.
g. Ensure parameter 14-22 Operation Mode has
reverted back to “Normal Operation”.
Notes:
• Item 3 resets the drive to the default
factory settings. The program
parameters listed in Table 39, p. 84 will
need to be verified or changed as
described in Items 1 and 2.
• Some of the parameters listed in the
table are motor specific. Due to various
motors and efficiencies available, use
only the values stamped on the specific
motor nameplate. Do not use the Unit
nameplate values.
• A backup copy of the current setup may
be saved to the LCP before changing
parameters or resetting the drive using
parameter 0-50 LCP Copy (All to LCP to
save all parameters to keypad and All
from LCP to download all parameters
into drive/replacement drive).. See LCP
Copy in the VFD Operating Instructions
for details.
4. Follow the start-up procedures for supply fan in the
“Variable Air Volume System” section.
5. After verifying that the VFD(s) are operating properly,
press the STOP key to stop the unit operation.
6. Follow the applicable steps in the “Final Unit Checkout”
section to return the unit to its normal operating mode.
If a problem with a VFD occurs, ensure that the
programmed parameters listed for supply VFD have been
set before replacing the drive.
Maintenance
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