User Constant Tables
5-
67
Speed Feedback Protection Control Functions: N2
User constants for speed feedback protection control functions are shown in the following table.
High-slip Braking: N3
User constants for high-slip braking are shown in the following table.
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Page
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
N2-01
Speed feed-
back detec-
tion control
(AFR) gain
Set the internal speed feed-
back detection control gain
using the multiplication
function.
Normally, there is no need to
make this setting.
Adjust this constant as fol-
lows:
• If hunting occurs, increase
the set value.
• If response is low,
decrease the set value.
Adjust the setting by 0.05 at
a time, while checking the
response.
0.00 to
10.00
1.00
No
No
No
A
No
584H
4-18
6-48
N2-02
Speed feed-
back detec-
tion control
(AFR) time
constant
Set the time constant to
decide the rate of change in
the speed feedback detec-
tion control.
0 to
2000
50 ms
No
No
No
A
No
585H 6-48
N2-03
Speed feed-
back detec-
tion control
(AFR) time
constant 2
Set the time constant to
decide the amount of change
in the speed.
0 to
2000
750 ms
No
No
No
A
No
586H 6-48
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Page
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
N3-01
High-slip
braking
decelera-
tion fre-
quency
width
Sets the frequency width for
deceleration during high-slip
braking as a percent, taking
the Maximum Frequency
(E1-04) as 100%.
1 to 20
5%
No
A
A
No
No
588H
-
N3-02
High-slip
braking cur-
rent limit
Sets the current limit for
deceleration during high-slip
braking as a percent, taking
the motor rated current as
100%. The resulting limit
must be 150% of the Inverter
rated current or less.
100 to
200
150%
No
A
A
No
No
589H
-
