ANDELI AJR3-1280 Manual de instrucciones - Página 13
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Imprimir página12. Starting mode
12-5 Voltage and current-limit double closed loop starting
When PB is 5 (Double closed loop), it is the double closed starting mode. This mode adopts
voltage ramp and current-limit double closed loop to control, it is a comprehensive starting
mode that requires stable starting and strict current-limit, and it adopts the pre-calculating
method that evaluates the working state of motor.
The output voltage waveform of this kind of starting mode will be different according to the
motor and loading condition.
12-6 Soft stop
AJR3-1000
series soft starter has two stop modes that is soft stop mode and free stop mode.
When 2 is not 0, it is soft stop mode. Refer to diagram 12-6-1 for output current waveform of
P
soft stop mod. TF is soft stop time set by F2. Under this stop mode, the power supply of motor
can be got through bypass contactor switching into thyristor output of soft starter, the output
voltage of the soft starter will be reduced gradually from full voltage, in this way, it reduces
the rotary speed gradually without causing the vibration till the motor stops. The output cut-
off voltage of soft stop is equal to the starting voltage.
Soft stop mode can reduce or eliminate the load surge like water pump. Under soft stop mode,
you can set soft stop current-limit value by FL to reduce the heavy current impact when redu-
cing soft stop, this soft stop current-limit value is a percent that is calculated on the basis of
starting current-limit.
V
Diagram 12-6-1
TF
12-7 Free stop
Set 2 at 0 (free stop), it is free stop mode.
P
Under this stop mode, as soon as the soft starter receiving the stop order, it will switch off the
bypass contactor immediately and forbid the voltage output from thyristor, and the motor will
stop gradually as the load inertia. When the wiring method of the soft starter is in n-in-one, then
you'd better set it into this mode to avoid loss-of phase fault report during output switching.
Usually, you should choose the free stop mode if it is not necessary to choose the soft stop. Free
stop will prolong the service life of soft starter. The free stop mode completely forbids instan-
taneous output, it avoids instantaneous heavy current impact in special application condition.
ANDLI AJR3- 1000
soft starter has six different starting modes, it is suitable for various
complex motors and different bad conditions, and the users can choose according to their
application ranges.
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13. Outline size
13-1
AJR3- 1
005 to
AJR3-1
055
Face
Side
13-2
AJR3-1
075
Face
Accessory
Base
of base
Side
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