Installation and commissioning
DIGIDRIVE
Variable speed drive
Réf. 3218 GB - 4.33 / d - 02.02
LEROY-SOMER
65
1: stop on deceleration ramp.
The drive decelerates the motor
according to the deceleration mode
chosen in parameter 3
3
0
0
.
One second after the stop, the display
indicates "rd".
2: stop on deceleration ramp with DC
injection for 1s.
The drive decelerates the motor according
to the deceleration mode chosen in
parameter 3
3
0
0
.
When zero frequency is reached, the drive
injects DC current for 1 second.
The drive then displays "rd ".
3: stop by DC injection braking, and
elimination at zero speed.
The drive decelerates the motor by setting
a low frequency current resulting in almost
zero speed, which the drive detects
automatically.
The drive then injects DC current for 1
second. The drive then displays "rd". No
run command can be taken into account
until rd is displayed.
:Selection of dynamic U/f
ratio
Adjustment range : OFF or On
Factory setting : OFF
OFF: the U/F ratio is fixed and set by the
base frequency (3
3
9
9
).
On: dynamic U/F ratio.
Generates a voltage/frequency characteristic
which varies with the load. It is for use in
quadratic torque applications (pumps/fans/
compressors). It can be used in constant
torque applications with low dynamics to
reduce motor noise.
Motor
speed
t
Time
Deceleration
ramp
1sec
Stop
rd
Motor
speed
Motor
current
t
Time
Deceleration
ramp
Stop
DC injection
1 secondMotor current
rd
Motor
speed
Motor
current
t
Time
Braked stop
Motor
current
Low frequency
current injection
DC
injection
1 sec.
Stop
rd
3
3
2
2
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