Softstart PSTX170-600-70 1SFA898111R7000

Advanced solid-state starter – protection and optimization of motor operation

The PSTX170-600-70 is an advanced device used for smooth starting of three-phase motors, providing not only a reduction in starting currents, but also comprehensive protection of the installation and extending the life of the motor. Devices from the PSTX series are characterized by high reliability and a wide range of applications in industry. It is an ideal solution for both professional installers and users looking for an effective way to improve the performance of electric drives.

Functionality and construction

The PSTX170-600-70 features a built-in bypass contactor, which takes over the full motor load after the starting process is completed, minimizing power losses on semiconductor elements. The use of torque control allows you to adjust the starting characteristics to the specifics of the load, which is particularly important in applications requiring precise control. A built-in motor overload protection further increases operational safety and protects against damage. The device is designed to operate in a wide range of voltages – from 208 to 600 V AC – which ensures its versatility. In addition, the graphic display makes configuration and parameter monitoring easier. Printed circuit boards are coated with a special coating, which increases resistance to aggressive chemical environments.

Applications and benefits

This soft starter finds application in a wide spectrum of industrial applications, such as pumps, fans, compressors, conveyor belts and construction machinery. Thanks to the ability to automatically detect the type of motor connection (star/delta), installation and configuration are extremely simple. The use of the PSTX170-600-70 soft starter translates into a number of benefits:

• Reduction of starting currents: Reducing the inrush current during motor start-up minimizes the load on the power supply network and prevents voltage drops.
• Extended motor life: Smooth starting reduces mechanical stress in the motor and gearboxes, which translates into a longer life of these components.
• Protection of electrical installation: Built-in protections protect the motor and installation against overloads, short circuits and other failures.
• Communication capability: The built-in Modbus RTU interface enables integration with control and monitoring systems.
• Easy operation: Detachable control panel with a graphic display makes configuration and diagnostics easier.
• Versatility: A wide range of supply voltages means that the device can be used in various electrical installations.
• Operation in harsh conditions: Protective coating of printed circuit boards provides resistance to corrosion and chemical substances.

The device is designed to operate at an ambient temperature of up to 40°C and has a protection class of IP00/NEMA 1. The rated operating current at this temperature is 170A, and the motor power at a standard 400V connection is 90kW (up to 160kW with a star connection). The tripping class is adjustable, allowing for precise tuning of the device to specific application needs.