Function description
Operating Manual PSENvip R, PSENvip R LR,PSENvip E
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4.9
System cycle productive version
This section illustrates the interdependencies of the parameters on the press brake, the
productive version and the control system PSSu PLC during a press stroke. The following
signals and states are considered:
}
Signal from foot switch: The press stroke is started by operating the foot switch, the sig-
nal is 1. If the foot switch is released, the signal switches to 0 and the press stops.
}
Signal System-Init: If the CNC signals to the PSSu K F FAU P that the press brake is at
top dead centre or in an upward movement, System-Init = 1.
}
OSSD signal: The PSSu K F FAU calculates the status of the protected field from the im-
age data on the receiver and generates an OSSD signal. The OSSD signal controls the
outputs of the PSSu K F FAU. If the protected field is clear, the OSSDSignal is 1. It
switches to 0 if the protected field is interrupted.
}
Status of protected field: Free, interrupted
}
Mute signal: signals whether dynamic muting is activated or deactivated. Dynamic muting
starts when the advance measuring field touches the pinch point on the workpiece. It
ends when the tool centre point reaches the muting end point.
The signal is reset to "1" when the protected field is fully activated and the advance
measuring field is clear.
A protected field that has already been partly deactivated can be completely reactivated
by
– side intervention
– the signal System-Init = 1
}
Muting OSSD signal: The OSSD signal is muted.
If the tool centre point reaches the muting end point, the OSSD signal switches from 1 to
0. To enable the downward movement of the press to continue, the OSSD signal must be
muted.
}
Monitoring of braking ramp: if the advance measuring field reaches the pinch point, mon-
itoring of the braking ramp must be started
}
Monitoring of pinch point: if the advance measuring field reaches the pinch point, monitor-
ing of the pinch point must be started
The upward movement of the press is assumed as a safe movement.