Mitsubishi Electric FR-A820-00046 Instruction Manual page 627

Parameters
» Adjust frequency only without adjustment of gain voltage (current)
(When changing the gain frequency from 60 Hz to 50 Hz)
Parameter selection
Turn
Press
Changing the maximum frequency
Turn
Press
Checking the mode/monitor
Press
Start
Turn ON the start switch (STF or STR). Then turn the frequency setting potentiometer clockwise slowly to full.
The motor is operated at 50 Hz.
Tab. 5-163: Adjusting only the frequency without adjustment of a voltage (current)
NOTES If the frequency meter (display meter) connected across the terminals FM and SD (CA and 5) does
not indicate exactly 60 Hz, set the calibration parameter C0 "FM/CA terminal calibration".
(Refer to page 5-365.)
If the gain and bias of voltage (current) setting voltage are too close, an error ("Er3") may be dis-
played at setting.
Changing C4 (Pr. 903) or C7 (Pr. 905) (gain adjustment) will not change Pr. 20.
Input to the terminal 1 (frequency setting auxiliary input) is added to the frequency setting signal.
For operation outline of the parameter unit (FR-PU07), refer to the Instruction Manual of the
FR-PU07.
To set the value to 120 Hz or higher, the Pr. 18 "High speed maximum frequency" needs to be 120
Hz or higher. (Refer to page 5-321.)
Make the bias frequency setting using the calibration parameter C2 (Pr. 902) and C5 (Pr. 904).
(Refer to page 5-421.)
CAUTION:
E
Be cautious when setting any value other than "0" as the bias frequency at 0 V (0 mA). Even if a
speed command is not given, simply turning ON the start signal will start the motor at the preset
frequency.
Parameters referred to
Pr. 1
Pr. 18
Pr. 20
Pr. 73
Pr. 267
Pr. 79
Pr. 858
Pr. 868
FR-A800
to choose " "(Pr. 125) for the terminal 2, and "
to show the present set value. (60Hz)
to change the set value to "
to enter the setting. "
three times to change to the monitor / frequency monitor.
Maximum frequency
High speed maximum frequency
Acceleration/deceleration reference frequency
Analog input selection
Terminal 4 input selection
Operation mode selection
Terminal 4 function assignment
Terminal 1 function assignment
(T) Multi-Function Input Terminal Parameters
Operation
". (50Hz)
" and " (
"(Pr. 126) for the terminal 4.
)" flicker alternately.
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