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Electromechanical interlocks with guard locking

Safety interlocks with electromechanical guard locking are devices designed to prevent the guards from being opened until the hazardous condition has been completely eliminated.

An electrically controlled mechanical locking system

This type of interlock is recommended for machinery and systems featuring moving parts, residual inertia or dangerous movements that continue for a period even after a stop command. These applications require an electrically controlled mechanical locking system that physically prevents access to the danger area until safe conditions have been established.

Operation and release logic of electromechanical interlocks

Pizzato safety interlocks with electromechanical guard locking keep the guard locked using a mechanical holding system that is electrically controlled, with monitoring of the actuator and solenoid that operates the locking function.

Versions are available with two main operating principles, depending on application requirements and regulations:

Power-to-unlock mode

The guard remains locked while power supply is absent.

Power-to-lock mode

Locking occurs only when power supply is present.

Advantages of interlocks with electromechanical guard locking

01

Mechanical locking of the guard in compliance with ISO 14119

02

Maximum levels of functional safety PL e and SIL 3 even with a single device

03

Different operating principles that can be configured based on the application risk

04

Different compatible safety handles

05

Wide-ranging actuator travel in head for greater device reliability

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