Frequency-Related Functions - Hitachi L200 Series Instruction Manual

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 refer-
ence. 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 frequency setting (A004/A204)
takes precedence over frequency upper
limit (A061/A261).
Func. Name /
Code SRW Display
A061 Frequency upper limit
setting
Lim H 0000.0Hz
A261 Frequency upper limit
setting, 2nd motor
2Lim H 0000.0Hz
A062 Frequency lower limit
setting
Lim L 0000.0Hz
A262 Frequency lower limit
setting, 2nd motor
2Lim L 0000.0Hz
"A" Function
Description
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
>0.1 setting is enabled
Sets a limit on output
frequency less than the
maximum frequency (A004).
Range is from frequency lower
limit (A262) to maximum
frequency (A204).
0.0.. setting is disabled
>0.1 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
>0.1 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
>0.1 setting is enabled
L200 Inverter
Output
frequency
Upper
A061
limit
Lower
A062
limit
0
Frequency command
Run
Mode
–FEF
Edit
(EU)
0.0
0.0
0.0
0.0
3–21
Settable
range
Defaults
–FU
Units
(USA)
0.0 Hz
0.0 Hz
0.0 Hz
0.0 Hz