71
DRIVE THE MOTOR
3
Make a start and stop with terminals (External operation)
3.5.6 Changing the output frequency (60Hz, initial value) at the maximum current input
(at 20mA, initial value)
<How to change the maximum frequency?>
Changing
example
When you want to use the 4 to 20mA input frequency setting potentiometer to change the 20mA time-frequency from 60Hz
(initial value) to 50Hz, make adjustment to output "50Hz" at 20mA current input. Set "50Hz" in Pr. 126.
Operation Display
1.
Turn until " " (Pr. 126) appears.
2. Press to show the currently set value
" " (60.00Hz).
3. Turn to change the set value to
" " (50.00Hz).
4. Press to set.
Flicker...50Hz output at 20mA input complete!!
5. Mode/monitor check
Press twice to choose the monitor/
frequency monitor.
6. To check the setting, turn the start switch (STF
or STR) ON and input 20mA. (Refer to
operation 2 to 5 of the section 3.5.5)
REMARKS
The frequency meter (indicator) connected to across terminals FM-SD does not indicate just 50Hz ... Why?
The frequency meter can be adjusted using calibration parameter C0 FM terminal calibration. ( Refer to Chapter 4 of the
Instruction Manual (Applied)).
Use calibration parameter C5 to set frequency at 4mA and
calibration parameter C0 to adjust the indicator.
(
Refer to Chapter 4 of the Instruction Manual (Applied)).
As other adjustment methods of frequency setting current gain, there are methods to adjust with a current applied to across
terminals 4-5 and adjust at any point without a current applied. (
Refer to the Instruction Manual (Applied) for the setting
method of calibration parameter C7).
When performing a high speed operation at 120Hz or more, setting of Pr. 18 High speed maximum frequency is necessary.
( Refer to Chapter 4 of the Instruction Manual (Applied) ).
Output
frequency
(Hz)
60Hz
Initial value
Bias
C5 (Pr. 904)
Gain
Pr. 126
0
Frequency
setting signal
100%
0
20
4 20mA
C6 (Pr. 904) C7 (Pr. 905)
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