Starters Reduce Motor Stress, Increase OEM Equipment Reliability

The PSR Family of Softstarters

The PSR line of smaller, cost-effective, 3 to 105A, OEM softstarters can be close-coupled with an MS manual motor starter to create a superior OEM starting solution. The PSR soft-starts and soft-stops the motor, and the manual motor starter provides a disconnect switch and branch circuit protection. The compact PSR Softstarter is an ideal design alternative for motor starting. When selected over other approaches, it provides control feedback, consistent acceleration, and improved drive component reliability. PSR Softstarters have been tested and approved for UL and CCC, includes the CE logo and meets the directives of RoHS. The PSR range includes four physical sizes, with widths from 1.77 -- 2.75 inches (45 to 70 mm), covers rated currents from 3 to 105 Amps, up to 600 VAC, and is available for control voltages of 24 V DC or 100-240 V AC.

All sizes include a "Run" signal, while sizes from 25 to 105 A add a signal relay for "TOR" or full voltage. These can be attached to an automation control system to provide closed-loop control or operator indication. The PSR Softstarter has integrated by-pass, and a cooling fan can be attached to increase the starting capacity. Standard starts without the fan are at least 10 per hour; with the fan, 20 starts or more per hour are possible.

Less Inventory, More Range, Via Wider Voltage Range
The wider operating voltage range of the PSR softstarter family also provides a reduction in the cost of back-up inventory required to support multiple OEM applications for equipment. The PSR family provides less inventory, but more range. It also can reduce inventory needed for maintenance-critical, 100% uptime, municipal- and process-control applications.

Faster Installation through Knob Adjustments

The new softstarter family has a clearly marked front panel with knob adjustments for the three operational settings (no programming is required). The connection terminals are clearly marked and an installation diagram is included to allow easy, fast, positive mounting and connection. The enclosure can be either DIN rail or screw mounted.

Safely Ramps Up or Down 3 Phase Motors
A softstarter ensures the smooth starting and/or stopping of AC motors by reducing the effective voltage. This facilitates reducing the in-rush current and the current required throughout acceleration to full speed or TOR. A soft starting of motor is popular with end users who want to improve equipment design reliability by eliminating the stress on drive train components typical with full-voltage starting methods. Applications where drive train reliability is critical include pumps, fans, mixers and crushers. Reduced voltage starting is important in conveyor applications where any initial start-up jolt would break fragile product or create a safety hazard; and in people mover applications like escalator, elevators and moving walkways.

PSR a true communicator
The PSR softstarters communicate with factory-wide networks and other equipment – easily! The key to multi-protocol communication is ABB's unique FieldBusPlug system. Unlike competitors’ units, which are protocol-specific, these PSR softstarters are "communication protocol-neutral." This means these units can be ordered with a neutral fieldbus adapter, so that they are ready to communicate with DeviceNet, Profibus DP or Modbus RTU. Then, to avoid the excess cost of built-in, universal-translator hardware, an accessory FieldBusPlug is simply plugged in – and the PSR can instantly can communicate.

Cost-effective Flexibility
This ability to adapt to all the leading fieldbus protocols makes the PSR series an extremely cost-effective solution for OEM equipment designers, whose equipment must be adaptable to a wide range of industrial and commercial applications. The fieldbus neutral feature provides more monitoring and diagnostic capabilities on the smaller OEM controls.

ABB, Automation Products, Low Voltage Products & Systems is a leading manufacturer and supplier of controls products (http://www.abb.us/controlproducts). ABB (www.abb.com) is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 110,000 people.


for More Information see Related Links on this page