Machine Protection
6-
25
Using Frequency Detection: L4-01 to L4-04
Set these constants when outputting one of the frequency agree or frequency detection signals from a multi-
function output. When using flux vector control, the motor speed is detected.
Related Constants
Constant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control
Methods
MEMOBUS
Register
Open-
loop
Vector
Flux
Vector
Display
L4-01
Speed agree detection
level
Effective when “Desired fre-
quency (ref/setting) agree 1,”
“Frequency detection 1,” or
“Frequency detection 2" is set
for a multi-function output.
Frequencies to be detected are
set as a percentage.
0.0 to
100.0
0.0%
No
A
A
530H
Spd Agree Level
L4-02
Speed agree detection
width
Effective when “Frequency
(speed) agree 1,” “Desired fre-
quency (speed) agree 1,” or
“Frequency (FOUT) detection
1,” Frequency (FOUT) detec-
tion 2 is set for a multi-function
output.
Sets the frequency detection
width as a percentage.
0.0 to
100.0
2.0%
No
A
A
531H
Spd Agree Width
L4-03
Speed agree detection
level (+/-)
Effective when “Desired fre-
quency (speed) agree 2,” “Fre-
quency (FOUT) detection 3,”
or “Frequency (FOUT) detec-
tion 4” is set for a multi-func-
tion output.
Frequency detection width is
set as a percentage.
-100.0
to
100.0
0.0%
No
A
A
532H
Spd Agree Lvl+-
L4-04
Speed agree detection
width (+/-)
Effective when “Frequency
(speed) agree 2,” “Desired fre-
quency (speed) agree 2,” Fre-
quency (FOUT) detection 3 or
“Frequency detection 4" is set
for a multi-function output.
Frequency detection width is
set as a percentage.
0.0 to
100.0
2.0%
No
A
A
533H
Spd Agree Width+-
