Table of Contents
Advertisement
VFD Programming Parameters (Supply/
Return/Exhaust Inverters)
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by
Trane or others, refer to the appropriate
manufacturer's literature for allowable waiting periods
for discharge of capacitors. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
Units shipped with an optional variable frequency drive
(VFD) are preset and run tested at the factory. If a problem
with a VFD occurs, ensure that the programmed
parameters listed in
Table 78, p. 180
have been set before replacing the drive.
Verify Parameters
Verify parameter 1-23 is set to 60 Hz.
1. To check parameter 1-23 press the Main Menu button
twice (if TR150 drive) (press the Back button if the main
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. At the unit, turn the 115 volt control circuit switch to the
Off position.
2. Turn the 24 volt control circuit switch to the Off position.
RT-SVX073A-EN
and
Table 79, p. 182
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by
Trane or others, refer to the appropriate
manufacturer's literature for allowable waiting periods
for discharge of capacitors. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
Important: HIGH VOLTAGE IS PRESENT AT TERMINAL
BLOCK OR UNIT DISCONNECT SWITCH.
3. 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
4. Repeat
Step 3
for each menu selection setting in
78, p. 180
and
Table 79, p.
5. To reset all programming parameters back to the
factory defaults:
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".
Service and Maintenance
182.
Table
179
Advertisement
Table of Contents
