YASKAWA CIMR-F7A Instruction Manual page 178

Con-
stant
Number
High-slip
N3-03 braking stop
dwell time
High-slip
N3-04 braking OL
time
Feed Forward: N5
User constants for the feed forward control are shown in the following table.
Con-
stant
Number
Feed for-
ward con-
N5-01
trol
selection
Motor
N5-02 accelera-
tion time
Feed for-
ward pro-
N5-03
portional
gain
Response
frequency
N5-04
for speed
command
* The factory setting depends on the Inverter capacity. The value for a 200 V Class Inverter for 0.4 kW is given.
-68
5
Name Description
Set in seconds the dwell time
for the output frequency for
FMIN (1.5 Hz) during V/f
control.
Effective only during decel-
eration for high-slip braking.
Set the OL time when the
output frequency does not
change for some reason dur-
ing deceleration for high-slip
braking.
Name Description
Select the feed forward con-
trol.
0: Disabled
1: Enabled
Set the time required to
accelerate the motor at the
rated torque (T ) to the
100
rated speed (Nr).
2
J: GD /4, P: Motor rated out-
put
2π J [kgm 2 ] Nr [min -1 ]
ta = [s]
60 T 100 [N m]
However,
60 P [kW]
× 10 3 [N m]
T 100 =
Nr [min -1 ]
2π
Set the proportional gain for
feed forward control.
Speed reference response
will increase as the setting of
N5-03 is increased.
Sets the response frequency
to a speed command in units
of 0.01 Hz.
Used when the machine
rigidity is high and the N5-
03 is correctly adjusted.
Usually, setting is not
required.
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0.0 to
1.0 s No A
10.0
30 to
40 s No A
1200
Control Methods
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0 or 1 0 No No
0.001
0.178 s
to No No
*
10.000
0.00 to
1.0 No No
100.00
0.00 to 40.00
No No
50.00 Hz
MEMO
Open
BUS
V/f Flux Page
Loop
Regis-
with Vec-
Vec-
ter
PG tor
tor
A No No 58AH -
A No No 58BH -
MEMO
Open
BUS
V/f Flux
Page
Loop
Regis-
with Vec-
Vec-
ter
PG tor
tor
4-20
No No A 5B0H
6-142
4-20
No No A 5B1H
6-142
4-20
No No A 5B2H
6-142
4-20
No No A 5B3H
6-142