Powtran PR5300 User Manual

Chapter 7 Test runing and application
19
7-1-1.If the motor starting status is not good, Refer to 7.2 of the soft starter starting mode and
application to select appropriate starting model.
7-1-2.If the motor starting torque is not enough, you can change the starting voltage (voltage mode)
or current-limiting value (current mode), to improve the motor starting torque.
7-1-3.When soft starter power on, do not open the cover, to avoid electric shock.
7-1-4.In the power test of running, if appearing unusual phenomena, such as abnormal noise,
smoke or odor, etc., should be quickly cut off the power and make further investigation.
7-1-5.If power on or when starting, appearing failure light and display errxx, you can find the
reason according to the displayed fault code and the corresponding chapter of the cause.
7-1-6.Press the stop button or external stop button to reset the fault status.
 Note:
1) When the environment temperature is below -10 ℃, should power on for more than 30 minutes
to warm-up before starting.
2) When the soft starter drive the motor successfully, the operation status indicator on the middle
panel lights, that proves the bypass is in running status. If at this time, the motor stop by bypass
contactor without actuation,you should check the bypass contactor and associated wiring
connection.
7-2.PR5300 Series soft starter starting mode and application
PR5300 series soft starter has six models to suit a variety of complex starter motor and load
conditions, the user can choose it as different application.
PR5300 series soft starter has six models to suit a variety of complex starter motor and load
conditions, the user can choose it as different application.
7-2-1.Current limit starting mode
When settingp9to 0, Set the start mode for this mode.
Figure 7- 2 shows the current limit mode of the motor
starting current waveform changes. I1 is starting current
limit by setting, when the motor starts, the output voltage
rapidly increases, Till the motor current reaches the
current limit value I1, and maintain the motor current is
not higher than this value, then gradually as the output
voltage increased, gradually accelerate the motor, when
the motor reaches the rated speed, the bypass contactor
make actuation, output current rapidly dropped to or
below the motor rated current Ie, starting process is
complete. Figure 7- 2
When the motor is lightly loaded or setingt the current limit high, the maximum starting
current may not reach the set limit value is normal.Generally.
Current limit starting mode is used for a strictly limited starting current requirements of the
occasion.
7-2-2.Voltage ramp start model
When p9setting item is 1, Start mode is for this mode.
Figure 7- 3 shows the output voltage waveform as voltage
ramp start voltage waveform. U 1 is the initial starting voltage of
starting, when the motor start, the motor current does not exceed
400% of rated range, the output voltage of soft starter quickly
rise to U1, then the output voltage gradually increase by the start
parameters setting, the motor is in smooth acceleration according
to voltage continuously rise, when the voltage reach the rated
voltage Ue, the rated motor speed, bypass contactor act, starting
process is complete. Figure 7- 3
Starting time t is based on standard load obtained in the standard experimental conditions,
T
I
I1
Ie
0
T
U
Ue
U1
0
t
Figure 7.3

Powtran PR5300 Specifications

General

Brand	Powtran
Model	PR5300
Category	Controller
Language	English