Limit the output frequency
Parameter
6 - 40
6.3
Limit the output frequency
6.3.1
Maximum and minimum frequency (Pr. 1, Pr. 2, Pr. 18)
You can limit the motor speed. Clamp the upper and lower limits of the output frequency.
The above parameter can be set when Pr. 160 = 0.
Set the maximum frequency
Set the upper limit of the output frequency in Pr. 1 "Maximum frequency". If the frequency of the
frequency command entered is higher than the setting, the output frequency is clamped at the
maximum frequency.
When you want to perform operation above 120Hz, set the upper limit of the output frequency
to Pr. 18 "High speed maximum frequency". (When Pr. 18 is set, Pr. 1 automatically switches to
the frequency of Pr. 18. When Pr. 18 is set, Pr. 18 automatically switches to the frequency of
Pr. 1.)
Purpose
Parameters that must be set
Refer to
Section
Set upper limit and lower limit of output
frequency
Maximum/minimum frequency
Pr. 1, Pr. 2,
Pr. 18
Perform operation by avoiding machine
resonance points
Frequency jump
Pr. 31–Pr. 36
Pr.
No.
Name
Initial Value
Setting
Range
Description
Parameters referred to
Refer to
Section
1
Maximum frequency
120Hz
0–120Hz
Set the upper limit of the output
frequency.
13
15
125
126
Starting frequency
Jog frequency
Terminal 2
frequency setting
gain frequency
Terminal 4
frequency setting
gain frequency
2
Minimum frequency
0Hz
0–120Hz
Set the lower limit of the output
frequency.
18
High speed maximum
frequency
120Hz
120–400Hz
Set when performing the opera-
tion at 120Hz or more
Fig. 6-8:
Maximum and minimum output frequency
I001100E
NOTE
When performing operation above 50Hz using the frequency setting analog signal, change
Pr. 125 (Pr. 126) "Frequency setting gain". (Refer to section 6.15.3.) If only Pr. 1 or Pr. 18 is
changed, operation above 50Hz cannot be performed.
Pr. 1
Pr. 18
Clamped at the
maximum frequency
5, 10V
(20mA)
Output
frequency [Hz]
Pr. 2
Frequency
setting
0
(4mA)
Clamped at the
minimum frequency
Summary of Contents for FR-D720S SC EC
Page 2: ......
Page 4: ......
Page 24: ...Description of the case Product checking and part identification 1 4 ...
Page 108: ...Operation panel Operation 4 20 ...
Page 436: ...Setting for the parameter unit and operation panel Parameter 6 286 ...
Page 484: ...Measurements on the main circuit Maintenance and inspection 8 14 ...
Page 504: ...Specification change Appendix A 20 ...
Page 505: ......
Page 506: ......
Page 510: ...Index Appendix A 24 ...
Page 511: ......