Operator Interfaces, Switches & Relays


Safety rope emergency stop switch

June 2014 Operator Interfaces, Switches & Relays

The heavy duty safety rope emergency stop switch from ifm electronic is designed to protect personnel while working in dangerous situations such as on long conveyor systems and rotating machines. It provides a safety-related switching status where large danger areas have to be secured and where housings or covers are not possible.

Safety rope pull switches are commonly used as a manual safeguard for long-haul mining applications. The long coverage span of rope pull switches eliminates the need for numerous E-stop buttons, reducing installation time and costs.

Pulling the tensioned rope or rope breakage activates the safety rope emergency stop switch. Housed in die-cast aluminium, the switches meet IP67 protection requirements and have an integrated E-stop with a blue reset button, a tension indicator and long rope spans of up to 250 m. With four NC safety contacts and two NO auxiliary contacts, the switches are vibration tolerant and the LED function display indicates healthy operation or error conditions.

The safety rope emergency stop switch meets the requirements of EN ISO 13850, IEC/EN 60947-5-1 and IEC/EN 60947-5-5 and can be used in applications up to performance level e according to EN ISO 13849-1. A window on the switch allows the user to monitor the correct rope tension during setting and maintenance. After activation of the E-stop function, a latching mechanism maintains the E-stop command until it is unlocked manually by pressing the blue reset button. Before resetting the E-stop signal the cause of the activation has to be determined. Reset is only possible with the correct rope tension.

For more information contact Chris Cronjé, ifm electronic SA, 086 143 6772, chris.cronje@ifm.com, www.ifm.com


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