Addressable modules for conveyor protection switches

Safety switches, modules rapidly, efficiently help users identify alarms.


Thermo Fisher Thermo Scientific Ramsey Belt Misalignment SwitchesScientific Inc. produced addressable modules that can connect to conveyor protection switches to safeguard equipment and protect the personnel who operate conveyor machinery. The rapid response and efficiency of the modules saves machinery users’ time when trying to locate an alarmed switch.

The devices “improve workplace productivity while also making the working environment safer,” said Paula Frisk, product manager, marketing for Thermo Fisher Scientific.

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, allowing users to easily identify where the incident occurred. Using a quick-connect handheld device, the switch operator is also able to program each switch with an ID number of choice.

Thermo Fisher Scientific integrates addressable modules into its Thermo Scientific Ramsey Belt Misalignment Switches and Thermo Scientific Ramsey Safety Cable Pull Switches, providing competitively priced, easy-to-use solutions. The switches can also improve the performance of conveyor belt scale systems and weight belt feeders when integrated, and they’re shipped ready for installation and programming.

Thermo Fisher Scientific Inc.

- Edited by Gust Gianos, Control Engineering,

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