ABB Softstarter PSR Series

# ABB Softstarter PSR Series: A Comprehensive Guide

[ABB's PSR series softstarter](https://www.cwlyautomation.com/product/412.html "ABB's PSR series softstarter") is a sophisticated motor control device that integrates soft starting, soft stopping, light-load energy saving, and multiple protection functions. This innovative product is designed to enhance motor reliability, improve installation efficiency, and boost productivity across various applications.

## Overview softstarter
The PSR series softstarter is a compact and user-friendly device that offers a seamless solution for motor control. It primarily consists of three-phase reverse-parallel thyristors and their electronic control circuits, which are connected in series between the power supply and the controlled motor. By controlling the conduction angle of these thyristors through different methods, the input voltage to the motor can be varied to achieve various functionalities.

## Key Features softstarter
Voltage Range and Current Ratings:
Main circuit voltage range: Typically 200 - 690 V AC.
Control supply voltage: Available in 100 - 120 V AC and 220 - 240 V AC.
Current ratings: Vary from 18 - 300 A (external) and 30 - 515 A (internal), with the same unit capable of both external and internal connections.
## adjustable FunctionsAdjustable Functions:
Excellent adjustable features such as start/stop ramps, initial voltage, jogging, inrush starting, voltage drop, and sequential starting.
Current limitation adjustable between 2 - 5 times the rated current (Ie).
Options for fieldbus communication.
Boost time, buck time, and initial voltage settings.
Ease of Installation and Operation:
The PSR series is designed for easy installation and adjustment.
DIN-rail mounting options ensure a compact and space-saving footprint.
User-friendly interfaces, such as the PST model with a 4-button keyboard and 12 language options, provide straightforward operation and comprehensive information.
Protection and Reliability:
The PSR series offers built-in motor protection features, including overcurrent, overload, and undercurrent detection.
Real-time monitoring and protection ensure motor safety and reliability, even after the bypass contactor takes over during normal operation.
The soft starter automatically replaces the thyristors with a bypass contactor once the motor reaches its rated speed, reducing thermal losses and extending the lifespan of the soft starter.
Soft Starting and Stopping:
Soft starting gradually increases the output voltage of the thyristors, allowing the motor to accelerate smoothly and reducing starting currents.
Soft stopping gradually decreases the voltage, ensuring a gentle deceleration and preventing torque shocks caused by free stopping.
Applications
The PSR series softstarter is suitable for a wide range of industrial applications, including pumps, fans, conveyors, and other machinery requiring precise motor control. Its ability to reduce starting currents and mechanical wear makes it ideal for protecting both the motor and the electrical network.
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### Benefits softstarter
Increased Motor Reliability: Soft starting and stopping reduce electrical and mechanical stress on the motor, extending its lifespan.
Improved Efficiency: The bypass contactor ensures that the motor operates at rated voltage during normal operation, reducing energy consumption and harmonic pollution.
Enhanced Productivity: The compact design and easy-to-use interface minimize installation and commissioning time, allowing for quicker deployment and higher productivity.
Comprehensive Protection: Built-in protection features provide continuous monitoring and protection of the motor, preventing accidents and downtime.
Conclusion
ABB's PSR series softstarter is a versatile and reliable motor control solution that offers a wide range of features and benefits. Its compact design, ease of use, and comprehensive protection make it an ideal choice for a variety of industrial applications. Whether you need to reduce starting currents, improve motor reliability, or increase productivity, the PSR series softstarter is a smart investment for your motor control needs.