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Guard lock, Solenoid interlock electromechanical

Electromechanical solenoid interlocks prevent unauthorized opening of accesses and safety guards

Solenoid interlocks of the SAFEMASTER STS family combine the functional principle and the advantages of electromechanical safety switches with a 2-channel guard locking function. Guard locking ensures that rotating, removable or laterally movable protective devices such as safety guards, hoods, protective grids remain closed as long as a dangerous condition or risk of injury to persons exists. This includes, for example, safety applications with overtravel movements of a machine or system in which, for example, high temperatures or pressure prevail.

However, solenoid interlocks are also used in process protection where opening of the safety guard is not desired, such as unauthorized interference in the production process. Electromechanical solenoid interlocks act together as a link between the higher-level control system (PLC) and safety relay devices such as standstill and speed monitoring or safety time relays. In addition, different coding levels, very high locking forces and extensive diagnostic options enable use in almost any safety-relevant application.

Electromechanical solenoid interlocks prevent unauthorized opening of accesses and safety guards Solenoid interlocks of the SAFEMASTER STS family combine the functional principle and the... read more »
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Guard lock, Solenoid interlock electromechanical

Electromechanical solenoid interlocks prevent unauthorized opening of accesses and safety guards

Solenoid interlocks of the SAFEMASTER STS family combine the functional principle and the advantages of electromechanical safety switches with a 2-channel guard locking function. Guard locking ensures that rotating, removable or laterally movable protective devices such as safety guards, hoods, protective grids remain closed as long as a dangerous condition or risk of injury to persons exists. This includes, for example, safety applications with overtravel movements of a machine or system in which, for example, high temperatures or pressure prevail.

However, solenoid interlocks are also used in process protection where opening of the safety guard is not desired, such as unauthorized interference in the production process. Electromechanical solenoid interlocks act together as a link between the higher-level control system (PLC) and safety relay devices such as standstill and speed monitoring or safety time relays. In addition, different coding levels, very high locking forces and extensive diagnostic options enable use in almost any safety-relevant application.

  • EU-Test certificate according to the directive 2006/42/EG, annex IX
  • For safety applications up to PLe / Cat. 4 acc. to DIN EN ISO 13849-1
  • Modular and expandable system
  • Wireless mechanical safeguarding
  • Easy installation through comprehensive accessories
  • Protection against lock-in
  • Coding level low, medium, high according to DIN EN ISO 14119:2014-03

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Electromechanical solenoid interlocks prevent the opening of movable guards by allowing the guard door to be opened only after an enable signal has been sent from the machine control system to the guard locking device. As long as the enable signal is still present, the movable part of the safety guard can be opened and closed. If there is no longer an enable signal and the safety guard is closed, the guard locking is reactivated and the machine can be started.

The guard locking devices can be used for both process and reliable personal protection and are available with separate actuator. On solenoid interlocks with separate actuator, the guard locking and actuator are not structurally connected to each other, but are functionally brought together or separated when the contacts are switched.

Looking for an electromechanical safety switch?

Do you need an electromechanical safety switch without guard locking? When the movable safety guard is opened, hazardous movements must be switched off immediately and secured against restarting. In this case, a safety switch without guard locking is the right choice.