January
2010

 


Sensors on trains face potential problems with 
electronic interference

Landquart; Any type of electronic device can be subject to powerline disruption when being used on board a train. That includes the door sensors. CEDES, however, has the perfect solution in its EMC-Filter device. 

The unit is designed to eliminate interfering signals at 40 kHz. It has extremely compact dimensions (12 x 16 x 120 mm) and weights just 60 g. The EMC-Filter connects with the safeguarding sensor or light curtain via 4-pin M8 pigtail connectors. Featuring a low-pass filter and 24 VDC power supply buffer, the EMC-Filter also has an IP67 enclosure rating alongside an operating temperature range of -40°C to +70°C.

CEDES Doors & Gates Product Manager, Bruno Keel, says the product is ideally suited for the company’s Micro MF and cegard/Mini light curtains as well as single beam sensors such as the ELS 300. 

The EMC Filter ensures disruption-free operation 
in train door applications

“The EMC-Filter is an easy-to-install solution for applications where there is a real chance of interference or disruption to powerline supplies. The product can also be used for industrial door and elevator applications where there is a similair risk,” explains Keel.

He adds that the EMC-Filter is a typical example of CEDES’ rapid response to a customer’s request. “We had a customer who experienced this interference problem. We reacted immediately and designed the EMC-Filter. It was integrated, solved the problem to the customer’s complete satisfaction and has worked perfectly ever since,” he points out.