Pilz PSEN sg2c-3 Series, Руководство по эксплуатации, Страница: 10 / 79

Function description
Operating Manual PSEN sg2c
1003267­EN­02
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 X1­3 and X1­4 if the
following conditions are met simultaneously:
} Inputs X2­3 and X2­4 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 X1­9 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 X1­3 and X1­4 if the following occurs:
} Inputs X2­3 or X2­4 are low or
}
The guard locking element is outside the bolt tongue or
}
The escape or auxiliary release has been operated
If the safety outputs have been shut down by either of the inputs X2­3 or X2­4, they cannot
be switched back on until both inputs are low simultaneously.
A High signal has to be present at X1­6 (X2­6) and a Low signal at X1­7 (X2­7) for operat­
ing the solenoid 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 X1­6 and X1­7 or X2­6 and X2­7, 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 X1­6 and X1­7 or X2­6 and X2­7.