News & Events

New small magnetically coded non-contact interlock switches fit the space

With the increasing speed and complexity of applications and the requirements to safeguard machinery, simple magnetic interlock switches may be insufficient to interlock guard doors. The new Allen-Bradley Guardmaster MC1 and MC2 non-contact interlock switches therefore incorporate several magnetically sensitive elements which must be triggered in a particular sequence to operate correctly.

This magnetically coded feature reduces the possibility of operator bypass by the use of simple magnets, increasing the integrity of the system. The Allen-Bradley Guardmaster MC1 and MC 2 also offers a generous tolerance to misalignment between the actuator and switch for reliable operation. The MC1 is available with 2 N.C. (normally closed) safety outputs and come in an IP67 rated housing. The MC2 is available with 2 N.C. solid state outputs and 1 PNP auxiliary output. The housing of the MC2 is rated to IP69K and also features a switch mounted LED for switch status indication.

The MC1 and MC2 with their moulded-in brackets and diminutive size are extremely versatile and simple to install. For high-risk applications a control unit is used with a single sensor to give a high-integrity system. For other applications deemed to be a lower risk as identified by a risk assessment, multiple sensors (including mechanical switches) can be connected to one control unit.

For more information e-mail us at: info_enews@ra.rockwell.com