Base Frequency, Base Frequency Voltage (Pr.3 , Pr.19 , Pr.47 ) - Mitsubishi Electric FR-S520E Series Instruction Manual

2.3.3 Base frequency, base frequency voltage
(Pr.3
Used to adjust the inverter
outputs (voltage, frequency) to
the motor rating.
Parameter Name
3 Base frequency
Base frequency
19
voltage
Second V/F
47
(base frequency)
*1. 1.9 times greater than the power supply voltage for the FR-S510WE-0.1K to 0.75K.
*2. Twice greater than the power supply voltage for the FR-S510WE-0.1K to 0.75K.
<Setting>
•In Pr. 3 and Pr. 47, set the base frequency (motor's rated frequency).
Use the RT signal to switch between these two different base frequencies.
(Turn on the RT signal to make Pr. 47 valid.) (*)
When running the standard motor, generally set the "base frequency" to the rated
frequency of the motor.
If only "50Hz" is given on the motor rating plate as the frequency, always set the
"base frequency" to "50Hz". If it remains at "60Hz", the voltage may become too low
and torque shortage occurs, resulting in an overload trip. Special care must be taken
when "1" is set in Pr. 14 "load pattern selection".
If "50Hz/60Hz" is given on the motor rating plate as the frequency, always set the
"base frequency" to "60Hz". When running the motor using bypass operation, set the
base frequency to the same value as the power supply frequency.
•Set the base voltage (e.g. rated voltage of motor) in Pr. 19.
, Pr.19 , Pr.47
Pr.19
Factory Setting
Setting Range
60Hz 0 to 120Hz
0 to 800V,
- - -
888, - - -
0 to 120Hz,
- - -
- - -
Explanation of functions (parameters)
)
888: 95% of power supply voltage (*1)
- - -: Same as power supply voltage (*2)
Setting is enabled when Pr. 30 = "1".
- - -: Function invalid
Setting is enabled when Pr. 30 = "1".
73
Output
frequency (Hz)
Pr.3
Pr.47
Remarks
⎯⎯
2