FWI-SS3-series Soft Starter

FWI-SS3-series Soft Starter is a new type start-up equipment which integrates electric force and electronic techniques,computer technique and modern control theory. It is the new generation product to replace the conventional Star-delta Starter, Self-coupling voltage-drop Starter and Magnetic control voltage-drop Starter.

Description :

• Advanced soft starter type: "voltage control type" and "current limiting type"
• capacity to Motor effectively, so it could save the cost.
• Intelligent, digital and single chip control.
• Man-machine conversation function.
• Delay starting function. Operation current displayed.
• Failure self-diagnosis.
• Natural wind cooling. Space saving.
• Can reduce the starting stress of motor and other loading equipments, so that lengthen their service life.
• The function of soft stopping can solve effectively the surging problem of inertia system when stopping.
• The perfect and reliable protection features, can give the effective protection to the operator's safety as well as the motor and matched equipments. Such over voltage; over current, over load, over heat, short circuit, lower voltage, input or output phase failure; three phase imbalance, starting time over long protection etc.
• The application of intelligent and network technique make the FWI-SS3 type Soft Starter meet the high -tech development of Electrical force automated technique effectively.

The reliable function and quality is the basic of the best service. even more, we can supply the special designing and functions of product matched to your need , and , the timely and perfect application consulting service.

Protective Grade: IP20

We make our soft starters have all kinds of protection functions to protect the soft starter and the motor using. Please choose the correct Protection class and parameters according to your usage conditions!

The diagram of Main circuit connection. 

The starting mode and application
There are six starting modes for the user to choose according the motor and load equipments, as the following:

Note：It is normal that When the load equipments
are light, the starting time is less than the set time.
This mode generally fits for the occasions where the Motor must be started smoothly

This mode is often used in the conditions which requires strict limit to the current when starting.

7.2.3 Torque control to start (The F9 item is set as "2"or"3",this starting mode is infuse) Diagrams 7.3  and 7.4 show the output changing waveform of Torque control mode. When the static friction force in the state of heavy load is too stronger to start the motor, can use this starting mode. When starting, the motor needs a very high voltage for a limited time to remove the static friction force of heavy load, then, you can use the Ramp voltage mode or limit-current mode to start the motor.

the motor, so if the Ramp voltage or Limit-current mode can be used, please had better not use the Torque control to start

7.2.4   Ramp Current to start (The F9 item is set as"4", this starting mode is in use)

Application Examples

The parameters of the different loadings are different, The Parameters below is for reference only.