Function description
Operating Manual PSEN sg2c
1003267-EN-04
10
4
Function description
The interlocking and guard locking system prevents the safety gates to the danger zone
from opening while the hazardous machine is switched on.
There is a high signal (safety gate closed and locked) at safety outputs X1-3 and X1-4 if the
following conditions are met simultaneously:
}
Inputs X2-3 and X2-4 are high and
}
The bolt tongue is within the response range and
}
The guard locking element is engaged in the bolt tongue and
}
The escape or auxiliary release pin is in the correct position.
Signal output X1-9 is high if:
}
The bolt tongue is within the response rang
There is a low signal (safety gate open and hazardous machine function interlocked) at
safety outputs X1-3 and X1-4 if the following occurs:
}
Inputs X2-3 or X2-4 are low or
}
The guard locking element is outside the bolt tongue or
}
The escape or auxiliary release has been operated or
}
The guard locking element is not engaged in the bolt tongue.
If the safety outputs have been shut down by either of the inputs X2-3 or X2-4, they cannot
be switched back on until both inputs are low simultaneously.
To operate the solenoid, a high signal must be present at X1-6 (X2-6) and at X1-7 (X2-7)
after the hazardous movement has been ended.
4.1
Normal /Unlock mode
Normal mode:
The safety gate to the danger zone is not unlocked until the hazardous machine is stopped
and the pushbutton for access request has been operated.
}
The guard locking element is disengaged from the bolt tongue as soon as there is a
high signal at terminals X1-6 and X1-7 or X2-6 and X2-7, followed by operation of the
pushbutton for access request.
Unlock mode:
The safety gate to the danger zone is unlocked when the hazardous machine is stopped.
This enables easier access for cleaning staff once the shift has ended, for example.
}
The guard locking element is disengaged from the bolt tongue as soon as there is a
high signal at terminals X1-6 and X1-7 or X2-6 and X2-7.
