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Application examples

 

Safegarding a robot cell

eGard offers the possibility to configure solutions to safeguard, regulate access and control of machinery and/or guarded areas, as is shown in the automated production line example, below.

  1. HMSBEUSSP4LCBC-AH Handle operated door lock with a safety key, a solenoid controlled safety switch, an access request button and an indication lamp (for full body access doors).
  2. HCSNSSBS The safety key from configuration 1 can be inserted in the key switch module to activate a teach mode function.
  3. HMSSBS-AH Handle operated door lock with safety switch, that terminates the machine after opening the door (for part body access doors).
  4. HCEMBB A monitored emergency stop.
 

eGard Trapped Key Interlocking Principles

A simple mechanical system of interlocking, without need for wiring to the access gates, keys are trapped and freed in a defined logic sequence, for machine controls, as well as allowing access when the guarded area or machine is safe to enter.

By turning key 1 or 2 in the key controlled switch configuration, the dual safety circuits are broken and the machine stopped.

Key 1 can be used to open door 1 of the safeguarded area A.
Key 2 can be used to open door 1 of the safeguarded area B.
Key 3 is a safety key that keeps key 1 trapped in the door lock preventing machine restart and can also be used to open a door inside area A.
Key 4 is a safety key that prevents machine restart and can also be used to start machine teachmode inside area B using a key controlled switch configuration.
 

Trapped Key Interlock Interfacing

Interfacing trapped key interlocks with safety gate switch and/or control functions does offer unique and new methods to improve, optimise, and rationalise the implementation of all these safety related functions into one system