Hitachi L2002 - Manual (Page 102)

“A” Group: Standard Functions
Configur
ing
Dr
iv
e P
a
ra
m
e
ters
3–22
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).
Upper
limit
Frequency command
Lower
limit
Settable
range
Output
frequency
0
A061
A062
“A” Function Run
Mode
Edit
Lo Hi
Defaults
Func.
Code
Name /
SRW Display
Description
–FE(F)
(EU)
–FU
(USA)
Units
A061 Frequency upper limit
setting
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
✘ ✔
0.0 0.0 Hz
Lim H 0000.0Hz
A261 Frequency upper limit
setting, 2nd motor
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
✘ ✔
0.0 0.0 Hz
2Lim H 0000.0Hz
A062 Frequency lower limit
setting
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
✘ ✔
0.0 0.0 Hz
Lim L 0000.0Hz
A262 Frequency lower limit
setting, 2nd motor
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
✘ ✔
0.0 0.0 Hz
2Lim L 0000.0Hz