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Mitsubishi Electric FR-CS84-012 Instruction Manual Page 139

Freqrol-cs80.
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 Adjustment by changing the frequency without adjusting the voltage (current) (Example of
changing the gain frequency from 60 Hz to 50 Hz)
Operating procedure
1.
Selecting the parameter
Press
Press
2.
Changing the maximum frequency
Press
Press
3.
Selecting the mode and the monitor item
Hold down
4.
Start
Turn ON the start switch (STF/STR signal), and turn the frequency setting potentiometer clockwise slowly to full.
The motor is operated at 50 Hz.
NOTE
• If the voltage (current) values at the gain and bias frequencies are too close to each other, an error "
indicated.
• Changing C4 (Pr.903) or C7 (Pr.905) (gain adjustment) will not change Pr.20.
• 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
117.)
• Use the calibration parameter C2 (Pr.902) or C5 (Pr.904) to set the bias frequency. (Refer to
CAUTION
• 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 Maximum frequency, Pr.18 High speed maximum frequency
Pr.20 Acceleration/deceleration reference frequency
Pr.73 Analog input selection, Pr.267 Terminal 4 input selection
Pr.79 Operation mode selection
138
5. PARAMETERS
5.8 (T) Multi-function input terminal parameters
or
to show "
" (
to read the present set value. (60.00 Hz)
or
to change the set value to "
to confirm the selection. "
to select the monitor mode, and change the monitor item to the frequency.
page 93
page 100
) for terminal 2, or "
Pr.125
". (50.00 Hz)
" and "
" ("
page 117
page 131
" (
) for terminal 4.
Pr.126
") are displayed alternately.
page
135.)
" may be

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