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Safety Edge Switching Units

Safety Edge Monitoring Relays Safety Cat 2 and Cat 3
Safety Edge Switching Units

Switching units are used to monitor the status and health of safety edges, they monitor the integrated 8k2 resistors and all cables in the circuit.  If the resistor is shorted out or becomes open circuit, the safety relays will open and stop the machine or gate.

Multiple safety edges (or mats) are connected in series with an 8k2 Ohm terminating resistor as the final link in the circuit. By monitoring the quiescent current in the circuit the switching unit determines if one or more of the safety edges has been triggered, in this condition the safety relays are opened on the switching unit. Using the same technique, the switching unit also detects cable breaks and will repair a system fault and again open the safety relays.

Bircher recommends that no more than four safety edges are monitored by each channel of the switching unit.

Wired Switching Units

Switching units for safety edges and safety mats.

The ESGate and ESD3 series of switching units are suitable for monitoring directly wired safety mats and safety edges in gate, door and machine applications.

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Inductive Switching Units

Intra6 Inductive Switching Unit for Sliding Gate S

The InTra6 is an inductive signal transmission system for monitoring the status of safety edges on automatic sliding gates.

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Wireless Switching Units

RFGate Wireless Switching Units for Automatic Gate

Wireless signal transmission system for safety edges on rolling, sectional and folding doors, sliding gates and telescopic gates.

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Contact Details
Motion29 Limited
3 Tram Road Industrial Estate
Pontllanfraith
Blackwood
NP12 2LA
Tel: 01495 360022
Fax: 01495 227727
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