Wintriss SmartPAC 2, User Manual

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SmartPAC 2 with WPC 2000 Integration User Manual 1128600
Program Mode 5-25
Setting Sensor Stop Type
When you select a sensor type, the Sensor Stop Type screen, shown in Figure 5-26, displays.
The Sensor Stop Type screen allows you to specify how the press is to be stopped when the
die protection sensor detects a fault.
You can select one of three Stop Type settings for the sensor: emergency stop, top stop, or
smart stop. The three Stop Type options are described below.
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Emergency Stop (E-Stop). SmartPAC 2 stops the press as soon as a sensor fault is
detected. You should use this setting for any die-threatening event that occurs before the
critical angle, the point in the crankshaft rotation after which a stop signal to the press
cannot prevent the die from closing. A typical Emergency Stop application is a sensor that
monitors part ejection on the upstroke. Setting this sensor to an Emergency Stop ensures
that the ram will stop on the next stroke before the die closes.
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Top Stop . SmartPAC 2 stops the press at the top of its stroke after a sensor fault is
detected. You should use this setting for events that do not threaten the die or that occur
between the critical angle and bottom dead center (BDC). A typical Top Stop application is
a sensor that monitors a feed like a roll feed that takes place well into the downstroke.
Setting this sensor to a Top Stop ensures that the press does not stick on the bottom as a
result of a stop signal being sent just as the ram is about to contact the material.
•
Smart Stop . SmartPAC 2 performs either a Top Stop or Emergency Stop depending on the
angle at which the sensor fault is detected. SmartPAC 2 top-stops the press if the fault is
detected after the critical angle but before bottom dead center (BDC). If the fault is
detected after BDC but before the critical angle, SmartPAC 2 performs an emergency stop.
A typical Smart Stop application is a sensor that monitors short feeds, which can occur
either before or after the critical angle. When you select SMART STOP as the stop type,
you must specify the critical angle.
Figure 5-26. Sensor Stop Type Screen
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