LINK Systems OmniLink II Press Automation Control - Manual (Page 132)

August 30, 2002 Manual Version 1.0 6.27
programmed names as required.
It must be noted that when a job is stored in memory, only the number assigned to the description is
stored. When a job is recalled, the description that is currently assigned to the stored description number
will be displayed. If a description has been changed since the job was last stored, the new description,
not the description present when the job as stored, will be displayed. Since there are 80 description
names available, the user is encouraged to enter descriptions in unused locations rather than edit existing
names.
Section 6.7.1.3 Input Type
All channel logic types can have either Normally Off or Normally On input types. A sensor will switch
from its normal state when the event that it is monitoring takes place. For example, if a Normally Off
sensor is being used for stripper plate detection, the sensor will turn On when the stripper plate is
detected. The majority of sensors used will be Normally Off input type.
Section 6.7.1.4 Stop Type
All channel logic types have three stop types available; cycle stop, top stop, and intellistop. When a
channel fault is detected, a cycle stop, top stop, or intellistop signal can be asserted. If programmed for
a cycle stop and a malfunction is detected, a stop signal will be immediately sent to the press control. If
programmed for a top stop and a malfunction is detected, a stop signal will be sent to the press control at
a slide position that will allow the slide to come to rest at the top of its stroke. If programmed as an
intellistop and a malfunction is detected, an immediate stop signal will be sent to the press control if the
slide can come to rest before a programmed critical angle. If the malfunction occurs at a slide position
that will not allow the slide to come to rest before the programmed critical angle, a top stop will be
executed.
The user must choose the type of stop that is appropriate for the application. See Section 5.2.3.
Section 6.7.1.5 Bypass
Each individual channel can be bypassed. When a channel is bypassed, it no longer monitors its input
sensor. It will not send a stop signal to the press control if the input sensor fails to meet the
requirements of the selected channel type. Bypass the channel by this means effectively turns the
channel off, however, all of the programmed settings are retained. A channel could also be turned off by
setting it to Not Used, but doing so will cause all other programmed settings to be lost.
When a channel is bypassed, its status on the Die Protection screen display “Bypass” highlighted in
yellow. In addition the System Status and Module Status will display “One or More Channels
Bypassed” highlighted in yellow.
Additional information on bypass is contained in Section 6.7.3.
Section 6.7.1.6 Delay Time
This parameter is used by Static, Transfer, and Custom channel logic types only. This is the time that
the system will delay after the detection of a channel fault until a stop signal is issued. If the channel