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Start/stop using terminals (External
operation)
4.5.7 Changing the output frequency (60Hz, initial value) at the maximum current input
(at 20mA, initial value)
<How to change the maximum frequency>
The motor will not rotate ... Why?
Check that [EXT] is lit.
[EXT] is valid when Pr. 79 = "0" (initial value).
Use to lit [EXT].
Check that the AU signal is ON.
Turn the AU signal ON.
Check that wiring is correct. Check it again.
Change the frequency (0Hz) of the minimum value of potentiometer (at 4mA)
Adjust the frequency in calibration parameter C5 Terminal 4 frequency setting bias frequency.
(Refer to Chapter 4 of the Instruction Manual (Applied).)
Changing example
When you use the 4 to 20mA input and want to change the frequency at 20mA from 60Hz (initial
value) to 50Hz, set "50Hz" in Pr. 126.
The frequency meter (indicator) connected across terminals FM and SD does not indicate exactly 50Hz ... Why?
The indicated value can be adjusted by the calibration parameter C7 Terminal 4 frequency setting gain
(Refer to Chapter 4 of the Instruction Manual (Applied).)
The frequency meter (indicator) connected across terminals FM and SD can be adjusted by the
calibration parameter C0 FM terminal calibration.
(Refer to Chapter 4 of the Instruction Manual (Applied).)
Set frequency at 4mA using calibration
parameter C5.
(Refer to Chapter 4 of the Instruction
Manual (Applied).)
How can I operate at a frequency higher than
120Hz.
Additionally set Pr.18 High speed maximum
frequency.
(Refer to Chapter 4 of the Instruction
Manual (Applied).)
REMARKS
As other adjustment methods of frequency setting voltage gain, there are methods to adjust with a voltage applied to across
terminals 4 and 5 and adjust at any point without a voltage applied.
(Refer to Chapter 4 of the Instruction Manual (Applied) for the setting method of calibration parameter C7.)
PU
EXT
4.Press to set the value.
6.
To check the setting, turn the start switch (STF or STR)
on and input 20mA.
1.
Turn until (
Pr. 126) appears.
5.Mode/monitor check
Press twice to choose the
monitor/frequency monitor.
DisplayOperation
2.
Press to show the present set value.
" "(60.00Hz)
3.Turn to change the set value to " ".
(50.00Hz)
Flicker ··· 50Hz output at 20mA input complete!!
(Refer to 4.5.6 steps 2 to 5)
Output frequency
(Hz)
Pr. 126
0
0
0
0
C6 (Pr. 904)
Frequency setting signal
100%
20mA
5V
10V
C7 (Pr. 905)
Initial value
Bias
Gain
20
4
1
2
C5
(Pr. 904)
60Hz