GEH-6385 Reference and Troubleshooting, 2300 V Dr ives Chapter 4 Wizards
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4-15
Motor winding resistances: Stator hot res R1and Rotor hot res R2 values are listed
above as R1 and R2. The “hot” temperature is li sted here as RQWDG, is in units of
degrees Celsius. It i s the temperature at which the hot resi stances were calculated. It
should be ent ered in Rated rotor temp. Stator cold res R1 and Rotor cold res R2 are
not listed in the sample motor data sheet. As such, their entries should be left blank.
When Stator cold res R1 and Rotor cold res R2 are listed, they should have values
less than their hot coun terparts.
Motor winding reactance: Stator lkg react X1an d Rotor lkg re act X2 values are
listed above as X1R and X2R respectively. Magnetizing react Xm is listed as XM.
Starting react Xstis listed as XST.
Drive Commissioning: Motor Data Sheet - FluxCurve
Often the Motor Data Sheet will contain four or five pairs of coordinates (volts,
amps) that describe th e motor flux curve. The example below in cludes four points or
pairs of flux curve coordinates.
VNL INL LOAD * 1.00
460 98.90 Eff.: 0.9632
403 77.84 P.F.: 0.8670
345 64.06 IL: 280.07
288 52.21 SLIP: 0.0048
Flux Curve Data from Motor Data Sheet
Point 5 is the highest volt age point; Point 1 is the lowest volt age point. For curves
that list fewer than fi ve flux curve points, start with Poin t 5 and work down (voltage
values should be monotonically decreasing). This example would leave data point
one blank.
If the flux curve is not known, flux cur ve information will be determined during the
motor control tune- up. Leave unused points blank, not z ero. Entries can be returned
to blank (<No Value>) by highlighting the entered value and pressing delete.
Drive Commissioning: M otor and Process SpeedReferencing
Applied top RPM specifies the maximum speed the motor is expected to run in the
application. It is used to calculate the overspeed fault level and oth er motor control
settings.
Set Applied t op RPM to the maximum motor speed for the application.
Related functions
• Primary Motor & Application Data
• Local Speed Reference