This website uses cookies primarily for visitor analytics. Certain pages will ask you to fill in contact details to receive additional information. On these pages you have the option of having the site log your details for future visits. Indicating you want the site to remember your details will place a cookie on your device. To view our full cookie policy, please click here. You can also view it at any time by going to our Contact Us page.

A smart relay for motor control centres

05 June 2009

New “smart” relay provides better protection and easier fault finding for motor control centres.

Aguilar Alves Maffissoni
Aguilar Alves Maffissoni

The SRW01 smart relay is a low voltage, electric motor management system designed to provide greater protection and quick and easy fault identification on intelligent motor control centres that have networking capabilities. It provides improved operator safety and the facility for fast and precise identification and recording of system faults.

The SRW01 allows installation of accessories such as current measuring units, Modbus RTU, and Profibus-DP communication modules, and also an HMI for monitoring and programming of the smart relay. In addition, at a higher level the SRW01 offers linking to a remote PC for setting parameters, programming, controlling and monitoring via ladder logic software. This provides greater transparency of the motor management system generally, and enables a remote record of fault instances to be logged for future statistical analysis.

The SRW01 can overcome instances of unplanned downtime with its comprehensive ranges of protection and monitoring functions. Major protection features include Overload (trip class 5-45), PTC, Phase loss and Over/undercurrent; while essential monitoring capabilities check the status of digital inputs and outputs, RMS current for each phase, the running hours of the relay, and the number of start-ups of the system.

Designed for use on power supplies from 110-240 Vac/Vdc, and current from 0.25A up to 840 A, the SRW01 can be used on different starting modes: direct-on-line, star-delta; transparent operation with motor protection disabled, and PLC mode, also with motor protection disabled.

Contact Details and Archive...

Related Articles...

Print this page | E-mail this page