PSA & MSA: Standalone Coded Non Contact
IDEM's Standalone Coded Non Contact Switches have been developed as a standalone mountable device to provide a high level of fault detection and functional safety.
They can be mounted to guard doors to provide and maintain a high level of functional safety without the need to connect to external safety evaluators.
They have their own internal monitoring system and use force guided mechanical contacts and will maintain PLe/Category 4 (ISO13849-1) even with switches connected in series.
They are offered in high specification plastic or stainless steel housings and can be used in virtually any environment including high pressure cleaning following contamination from foreign particles. The housings are compact and easy to fit on less than 40mm frame sections.
The PSA (plastic) switch and the MSA (Stainless Steel 316) switch both have IP69K ingress protection and are suitable for most detergent wash down applications. The MSA (Stainless Steel 316) switch has a Mirror Polished Surface Finish (Ra4) and is suitable for CIP and SIP cleaning applications.
Dual Actuator versions are also available for use with "double door" guards.
The typical sensing distance "on" is 12mm with wide tolerance to guard misalignment after setting.
SAFETY RELIABILITY (ISO 13849-1) PLe Cat. 4:
All standalone switches employ 2 Force Guided Mechanical Relays and incorporate internal checking to ensure both relays are operational after each safety demand. If one relay fails to open or becomes inoperative the switch will lock out safe. Switches can be connected in series to maintain PLe/Category 4 to ISO13849-1.
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