Yaskawa Matrix Converter - Manual (Page 195)

6
-30
Speed Limit (Frequency Reference Limit Func-
tion)
This section explains how to limit the motor speed.
‹ Limiting Maximum Output Frequency
Use parameter d2-01 to set the maximum speed of the motor.
Set the upper limit value of the MxC output frequency as a percent, taking E1-04 (Maximum Output Fre-
quency) to be 100%.
„ Related Parameters
‹ Limiting Minimum Frequency
Use parameters d2-02 or d2-03 not to rotate the motor at a given frequency or less.
There are two ways to set the minimum frequency:
• 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
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
d2-01
Frequency Refer-
ence Upper Limit
Set the output frequency upper limit as a per-
cent, taking the max. output frequency to be
100%.
0.0 to
110.0
100.0% No A A A
Ref Upper Limit
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
d2-02
Frequency Refer-
ence Lower Limit
Sets the output frequency lower limit as a per-
centage of the maximum output frequency. 0.0 to
110.0
0.0% No A A A
Ref Lower Limit
d2-03
Master Speed Ref-
erence Lower
Limit
Set the master speed reference lower limit as a
percent, taking the max. output frequency to
be 100%.
0.0 to
110.0
0.0% No A A A
Ref1 Lower Limit