Frequency-Related Functions; Frequency Limits; Jump Frequencies - Hitachi L300P Series Instruction Manual
Three-phase input 200v class; three-phase input 400v class;
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Also See for L300P Series:
- Instruction manual (264 pages) ,
- Service manual (76 pages) ,
- Quick reference manual (38 pages)
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Frequency-
related Functions
"A" Function
Func.
Name
Code
A061 Frequency upper limit
setting
A261 Frequency upper limit
setting, 2nd motor
A062 Frequency lower limit
setting
A262 Frequency lower limit
setting, 2nd motor
Frequency Limits – Upper and lower
limits can be imposed on the inverter
output frequency. These limits will apply
regardless of the source of the speed
reference. You can configure the lower
frequency limit to be greater than zero as
shown in the graph to the right. The upper
limit must not exceed the rating of the
motor or capability of the machinery.
Description
Sets a limit on output
frequency less than the
maximum frequency (A004)
Range is 0.50 to 400.0 Hz
0.00 setting is disabled
>0.10 setting is enabled
Sets a limit on output
frequency less than the
maximum frequency (A004)
Range is 0.50 to 400.0 Hz
0.00 setting is disabled
>0.10 setting is enabled
Sets a limit on output
frequency greater than zero
Range is 0.50 to 400.0 Hz
0.00 setting is disabled
>0.1 setting is enabled
Sets a limit on output
frequency greater than zero
Range is 0.50 to 400.0 Hz
0.00 setting is disabled
>0.10 setting is enabled
Jump Frequencies – Some motors or machines exhibit resonances at particular speed(s),
which can be destructive for prolonged running at those speeds. The inverter has up to three
jump frequencies as shown in the graph. The hysteresis around the jump frequencies causes the
inverter output to skip around the sensitive frequency values.
Output
frequency
Jump frequencies
A067
A065
A063
Output frequency
Upper
A061
limit
Lower
A062
limit
Defaults
Run
Mode
Edit
–FE2
–FU2
–FR
Lo Hi
(EU)
(US)
(JP)
✘ ✔
0.00
0.00
0.00
✘ ✔
0.00
0.00
0.00
✘ ✔
0.00
0.00
0.00
✘ ✔
0.00
0.00
0.00
A066
A066
A064
A064
Frequency command
3–19
L300P Inverter
Settable
range
Frequency command
SRW Display
Units
Hz
>A061 LIMIT
HIGH
0000.00Hz
Hz
>A261 2LIMIT
HIGH
0000.00Hz
Hz
>A062 LIMIT
LOW
0000.00Hz
Hz
>A262 2LIMIT
LOW
0000.00Hz
A068
A068
Hysteresis values
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Table of Contents
Troubleshooting
