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438-II
Users Manual
Motor Setup
The motor nameplate provides information for the measurement algorithm. This information determines the
mechanical parameters from the electrical signals that are used for measurements. It is critical that you
enter the nameplate settings accurately to obtain accurate readings.
To open the Motor Setup screen:
1.
Push . The MENU screen opens.
2.
Push to change the page view.
3.
Use
4.
Push to open the Motor Setup screen.
Table 3 is a list of the supported motor operating ranges.
Voltage (pU)
Current (pU)
Input Power (pU)
Frequency
Voltage Unbalance (%)
Voltage THD (%)
Table 4 is a list of the operating ranges for variable speed drives.
Drive Operating range
Over/Under Voltage from Nominal V/f
Curve (%)
Carrier Frequency (kHz)
5.
Use
The Motor Analyzer supports motor designs according to NEMA and IEC design types. See Table 5 and
Table 6. If the design type is unknown, select Other. When set to Other, you must consider an additional
error of +5 % for the mechanical motor parameters.
4
to move through the menu selections and highlight Motor Analyzer.
Table 3. Motor Operating Range
Motor Operating range
50 Hz motors
60 Hz motors
pU (per Unit) = Measured value / Rated value
Table 4. VSD Operating Range
VFD
-15 to +15
2.5 to 20
to enter the motor nameplate parameters.
Direct on Line
0.9 to 1.1
0.9 to 1.1
0 to 1.7
0 to 2.2
50 Hz or 60 Hz
0 to 5
0 to 20
Note
Note
The lower limit applies up to rated frequency; above rated
frequency the saturation of the V/f curve is accommodated
VFD
0.7 to 1.2
0.58 to 1.2
0 to 1.7
0 to 2.2
40 Hz to 70 Hz
0 to 5
0 to 25
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