14
BAS-SVN029C-EN
Interface Module to stop the unit operation.
14. Follow the applicable steps in the "Final Unit Checkout" section in the unit Installation,
Operation, Maintenance Manual (IOM) to return the unit to its normal operating mode.
NNoottee:: If a problem with a VFD occurs, ensure that the programmed parameters listed for
condenser fan VFD (see the Table 4, p. 14, Table 5, p. 15 and Table 6, p. 16) have been set
before replacing the drive.
TR170 VFD Program Parameters
Drives are shipped with generic settings. These settings must be updated to reflect the drive
application. The following table defines the parameters that must be modified for the Trane
TR170 drives used in condenser fan applications on RTAC products.
IImmppoorrttaanntt:: Pressing the “MENU” button once will enter the drive parameter wizard. DO NOT use
the parameter wizard. The parameter wizard does not access all the required
parameters and may cause drive errors. Pressing the "MENU" button twice will allow
access to all parameters. ALWAYS use this method.
Table 4. TR170 VFD drive parameter RTAC
Parameter Number Parameter Description RTAC Setting Units
0-03 Regional Settings North America for 60 Hz, International for 50
Hz
—
0-06 Grid Type Depends on Grid Type —
0-40 [Hand on] Key on LCP Disable (0) —
1-20 Motor Power
(Motor Specific) kW
1-22 Motor Voltage (Motor Specific) V
1-23 Motor Frequency
(Motor Specific)
Hz
1-24 Motor Current (Motor Specific) A
1-25 Motor Nominal Speed (Motor Specific) RPM
1-71 Start Delay 3 s
1-72 Start Function DC Hold (0) —
1-73 Flying Start Enabled (1) —
1-82
Min Speed for Function at Stop [Hz]
0.1 Hz
1-90 Motor Thermal Protection ETR Trip 1 (4) —
2-00 DC Hold/Motor Preheat Current Default Value %
2-02 DC Braking Time Default Value s
2-10 Brake Function Off (0) —
3-03
Maximum Reference 50/60
(a)
—
3-16 Reference 2 Source No function (0) —
3-17
Reference 3 Source No function (0)
—
3-41 Ramp 1 Ramp Up Time 5 s
3-42 Ramp 1 Ramp Down Time 20 s
4-10
Motor Speed Direction Clockwise (0)
—
4-12 Motor Speed Low Limit [Hz] 3 Hz
4-14 Motor Speed High Limit [Hz] 50/60
(a)
Hz
4-18 Current Limit
If p122 = 380V then 115 Else 125
%
IInnssttaalllliinngg TTRR117700 VVFFDD aanndd CCoommppoonneennttss
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