The User Interface
156
Mode
The following Mode options are provided for selection:
o Pulse (only available if a photo-eye is fitted)
If this option is selected, when a contaminated package is detected the reject delay time
is counted down, in order for the package to travel from the photo-eye to the reject
device, where-upon the reject is turned on for a time equal to the reject dwell time.
Typically, this mode of reject would be used for air blast or pusher type rejects for the
accurate rejection of small packages at high speed.
o Pulse Extension
This option provides the same functionality as the Pulse option, except that the dwell
time is extended if a second contaminated product reaches the reject point before the
dwell time from the first contaminated product has timed out. This could typically be used
with an air blast or retracting band reject device, but not a pusher type device. This reject
mode is always available.
o Toggle (only available if a photo-eye is fitted)
If this option is selected, when a contaminated package is detected the reject delay time
is counted down, in order for the package to travel to the reject device, where upon the
reject device state is toggled.
The Reject dwell field will not be displayed for configuration in the Product Settings screen
as it is not used.
o Dwell Extension
If this option is selected, when a contaminated product is detected the reject device is
immediately activated, and stays activated for a time equal to the reject dwell time. If a
second reject product is detected before the dwell time has timed out, then the dwell time
is counted down from the beginning again.
The Reject delay field will not be displayed for configuration in the Product Settings screen
as it is not used.
o Reject till accept
If this option is selected, when a contaminated product is detected the delay time is timed
out, at which point the reject device becomes activated. The reject device will then stay
activated until an uncontaminated product reaches the reject point.
The Reject dwell field will not be displayed for configuration in the Product Settings screen
as it is not used.
Tap on the arrow to the right of the field to display the list of Mode options and select the
appropriate one.
Relay
The reject relay can be set to be either normally energised or normally de-energised. For
failsafe applications, the relay state should be normally energised so that if there is a fault in
the reject system the relay will drop out causing rejection of all products.
To Next Page
Loading...
