Wintriss SmartPAC2, Руководство пользователя

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1126700 SmartPAC 2 User Manual
5-20 Program Mode
Green Special Sensors
Green special sensors are designed to monitor slug ejection, signalling when slugs have
stacked up excessively in a slug ejection hole. Slugs are not necessarily ejected on every
stroke. Several strokes may be required before they finally break free and fall out of the
bottom of the die. If the slugs jam and too many stack up in the hole, the die can be damaged.
Slug stacking is virtually impossible to monitor with a standard green sensor. A red or yellow
sensor is equally ineffective because the sensor changes state whenever a slug is ejected.
Instead of actuating once per stroke like a typical green sensor, the green special sensor must
actuate at least once during a preset number of strokes. Rather than setting a Ready signal,
you set the maximum number of strokes that the press can make without the sensor actuating.
For example, if your die clears all the slugs from a particular ejection hole approximately once
every four strokes, you would set a Green Special sensor input for a six-stroke window. If no
slugs are ejected after six strokes, SmartPAC 2 sends a Stop command to the press.
Example: How a Green Special Sensor May Not Detect a Problem
Referring to the case cited above, assume that the press makes five strokes without ejecting a
slug. On the sixth stroke, one slug ejects and actuates the sensor. The green special sensor is
satisfied and the press continues to run. However, there are still five slugs in the ejection hole.
If the press makes five more strokes without ejecting a slug, ten slugs are now stuck in the hole.
If this process were to continue, it is conceivable that an infinite number of slugs could stack up
in the hole without the press stopping. Luckily, the laws of physics make this scenario unlikely.
When slugs jam, it is usually because the bottom one is stuck. If the bottom slug ejects, it is
very likely that the rest will soon follow.
Programming Sensor Settings
On the Die Protection Sensor Menu, you select a sensor to program, then enter settings for the
sensor on a series of screens that display sequentially. The settings you enter determine which
screens display, and programming for each sensor is likely to use a slightly different series of
screens. The following sections show you how to make these sensor program settings:
•
Set the Auto Enable by Tool (see page 5-21) or Auto Enable by Sensor (see page 5-23)
stroke counter
•
Assign a name to each sensor (see page 5-22)
•
Set the sensor type (i.e., red, yellow, green, etc.) (see page 5-24)
•
Set stop type (i.e., Emergency Stop, Top Stop, and Smart Stop) (see page 5-25)
•
Set the critical angle for a sensor programmed as Smart Stop (see page 5-26)
•
Set the Ready signal for a green sensor (see page 5-27)
•
Set the stroke count for a green special sensor (see page 5-29)
GREEN SPECIAL SENSOR MAY NOT PREVENT DAMAGE
Use the green special sensor with caution. An undesirable number of slugs can stack up in an
ejection hole while still satisfying a green special sensor’s requirements. See the example below.
Failure to comply with these instructions could result in property damage.
CAUTION