1147100
SmartPAC PRO Servo User Manual
130
Chapter 5
– Program Mode
Setting Sensor Stop Type
When you select a sensor type, the Sensor Stop Type screen displays, Figure 5-27. The Sensor Stop
Type screen allows you to specify how the press is to be stopped when the die protection sensor
detects a fault.
Figure 5-27. Sensor Stop Type Screen
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.
•
Emergency Stop (E-Stop). SmartPAC PRO Servo 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 ram downstroke 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.
•
Top Stop. SmartPAC PRO Servo 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 PRO Servo performs either a Top Stop or Emergency Stop depending on
the angle at which the sensor fault is detected. SmartPAC PRO Servo 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 PRO Servo 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.
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