Speed Limit (Frequency Reference Limit Function); Limiting Maximum Output Frequency; Limiting Minimum Frequency - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

Speed Limit (Frequency Reference Limit Function)

This section explains how to limit the motor speed.

Limiting Maximum Output Frequency

If you do not want the motor to rotate above a given frequency, use constant d2-01.
Set the upper limit value of the frequency reference as a percentage, taking E1-04 (Maximum Output Fre-
quency) to be 100%.
Related Constants
Con-
stant Name
Number
d2-01 Frequency reference upper limit

Limiting Minimum Frequency

If you do not want the motor to rotate below a given frequency, use constants 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 Constants
Con-
stant Name
Number
d2-02 Frequency reference lower limit
Master speed reference lower
d2-03
limit
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Speed Limit (Frequency Reference Limit Function)

Description
Set the output frequency upper limit, taking the max. out-
put frequency to be 100%.
Description
Set the output frequency lower limit, taking the base refer-
ence to be 100%.
Set the master speed reference lower limit, taking the max.
output frequency to be 100%.
Change
Setting Factory during Access
Range Setting Opera- Level
tion
0.0 to
100.0% No A
110.0
Change
Setting Factory during Access
Range Setting Opera- Level
tion
0.0 to
0.0% No A
110.0
0.0 to
0.0% No A
110.0
25
6-