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Base Frequency, Base Frequency Voltage (pr. 3, Pr. 19, Pr. 47) - Mitsubishi Electric FR-E500 Instruction Manual

Fr-e500 series transistorized inverter.
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4.2.3 Base frequency, base frequency voltage (Pr. 3, Pr. 19, Pr. 47)

Pr. 3 "base frequency"
Pr. 19 "base frequency voltage"
Pr. 47 "second V/F (base frequency)"
Used to adjust the inverter outputs (voltage, frequency) to the motor rating.
z When running a standard motor, generally set the rated motor frequency. When
running the motor using the commercial power supply-inverter switch-over, set the
base frequency to the same value as the power supply frequency.
Parameter
Factory
Number
Setting
3
60Hz
19
9999
47
9999
<Setting>
y Use Pr. 3 and Pr. 47 to set the base frequency (rated motor frequency). Two base
frequencies can be set and the required frequency can be selected from them.
y Pr. 47 "Second V/F (base frequency) " is valid when the RT signal is on. (Note 3)
y Use Pr. 19 to set the base voltage (e.g. rated motor voltage).
Note: 1. Set 60Hz in Pr. 3 "base frequency" when using a Mitsubishi constant-torque
motor.
2. When the general-purpose magnetic flux vector control mode has been
selected, Pr. 3, Pr. 19 and Pr. 47 are made invalid and Pr. 83 and Pr. 84 are
made valid.
3. The RT signal serves as the second function selection signal and makes the
other second functions valid. Refer to page 145 for Pr. 180 to Pr. 183 (input
terminal function selection).
Setting
Range
0 to 400Hz
0 to 1000V,
8888: 95% of power supply voltage
8888, 9999
9999: Same as power supply voltage
0 to 400Hz,
9999: Function invalid
9999
Pr.19
75
PARAMETERS
Related parameters
Pr. 71 "applied motor"
Pr. 80 "motor capacity"
Pr. 83 "rated motor voltage"
Pr. 180 to Pr. 183 (input terminal
function selection)
Remarks
Output
frequency
Pr.3
Pr.47
4

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