Frequency-Related Functions - Hitachi WJ200 Series Instruction Manual

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Frequency-related Functions

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. The upper
limit must not exceed the rating of the
motor or capability of the machinery.
The maximum
(A004/A204)
frequency upper limit (A061/A261).
Func.
Code
Frequency upper limit
A061
Frequency upper limit,
A261
2nd motor
Frequency lower limit
A062
Frequency lower limit,
A262
2nd motor
frequency
takes precedence
"A" Function
Name
Sets a limit on output frequency
less than the maximum frequency
(A004).
Range is from frequency lower
limit (A062) to maximum
frequency (A004).
0.0 setting is disabled
>0.0 setting is enabled
Sets a limit on output frequency
less than the maximum frequency
(A204).
Range is from frequency lower
limit (A262) to maximum
frequency (A204).
0.0 setting is disabled
>0.0 setting is enabled
Sets a limit on output frequency
greater than zero.
Range is start frequency (B082) to
frequency upper limit (A061)
0.0 setting is disabled
>0.0 setting is enabled
Sets a limit on output frequency
greater than zero.
Range is start frequency (B082) to
frequency upper limit (A261)
0.0 setting is disabled
>0.0 setting is enabled
Output
frequency
Upper
A061
limit
Lower
A062
limit
0
setting
over
Description
Settable
range
Frequency command
Run Defaults
Mode
Lnitial data Units
Edit
0.00 Hz
0.00 Hz
0.00 Hz
0.00 Hz