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Speed Limit (Frequency Reference Limit Function)
Limiting Maximum Output Frequency
If you do not want the motor to rotate above a given frequency, use parameter d2-01.
Set the upper limit value of the Inverter output frequency as a percentage, taking E1-04 (Maximum Output
Frequency) to be 100%.
Related Parameters
Limiting Minimum Frequency
If you do not want the motor to rotate at below a given frequency, use parameters d2-02 or d2-03.
There are two methods of limiting the minimum frequency, as follows:
•
Adjust the minimum level for all frequencies.
•
Adjust the minimum level for the master speed frequency (i.e., the lower levels of the jog frequency, multi-
step speed frequency and auxiliary frequency will not be adjusted).
Related Parameters
Zero speed setting
If zerospeed setting is set within parameter H2-01 or H2-02, option 1 , the Inverter will operate at the set
minimumfrequency level programmed in parameter E1-09. One of the programmed outputs will close its
contact.
Param-
eter-
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
LCD Display
d2-01
Frequency reference
upper limit
Set the output frequency upper limit, taking the
max. output frequency to be 100%.
0.0 to
110.0
100.0%
No
A
Ref Upper Limit
Param-
eter-
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
LCD Display
d2-02
Frequency reference
lower limit
Set the output frequency lower limit, taking the
base reference to be 100%.
0.0 to
110.0
0.0%
No
A
Ref Lower LImit
d2-03
Master speed reference
lower limit
Set the master speed reference lower limit, taking
the max. output frequency to be 100%.
0.0 to
110.0
0.0%
No
A
Ref1 Lower Limit