Thermo Fisher Scientific Inc. announced the availability of addressable modules that can connect to conveyor protection switches to safeguard equipment and protect the personnel who operate conveyor machinery (Fig.). The addressable modules are incorporated into safety cable pull switches and belt misalignment switches, traditionally mounted along the sides of conveyors. If a switch enters an alarm position, the addressable module sends a signal back to a programmable logic controller (PLC) indicating where an incident has occurred.
The conveyor protection switches, equipped with addressable modules, are wired to a master module that can handle up to 128 different identification (ID) addresses. The master module control is capable of sending ID address information to the PLC using Modbus-RTU, Allen Bradley, Siemens and Schneider protocols. Using a quick-connect handheld device, the switch operator is able to program each switch with an ID number of choice. The company integrates addressable modules into its Thermo Scientific Ramsey Belt Misalignment Switches and Thermo Scientific Ramsey Safety Cable Pull Switches. The switches can also improve the performance of conveyor belt scale systems and weight belt feeders when integrated, and they are shipped ready for installation and programming.
Thermo Fisher Scientific, Waltham (USA),
Tel.: +1 781 622-1000, www.thermofisher.com