Ronan XSD-1000 - Manual (Page 39)

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There are 5 boxes below the photo-eyes that display the functions of the photo-eyes. The
first one is highlighted initially. To select other functions, click on the definition boxes
and the photo-eyes enabled for that function will be shown.
The number of photo-eyes you selected previously determines how many lights are
available below the name you select. Each light represents a photo-eye. A ‘black’ light
means it is not selected; a ‘green’ light means it is selected. The light with the box
around it represents photo-eye number 1. The others are numbered from left to right. As
you click on the boxes below the lights, the lights will change to show the ones selected
and unselected. To change a photo-eye from selected to unselected or unselected to
selected, click on the photo-eye you wish to change. The photo-eye numbers on the
screen match the numbers on the Remote I/O Digital Input card. If you wired the left-
most photo-eye into Input #1, then number one on the screen represents the left-most
photo-eye.
You must determine which photo-eyes perform the following functions:
• Truck Present Photo-Eye: Only one light should be green here and should be an ‘end’
light (first or last). The direction the vehicle travels for the Forward Direction Name
cycle will determine which photo-eye starts the Truck Present cycle. The first photo-
eye blocked by the truck will start the Truck Present cycle. Click on any light to
toggle it from on to off to on.
• Photo-Eye(s) ON to Maintain Truck Presence: These are the photo-eyes that must be
on to maintain the Truck Present cycle. If any of the lights defined here remain
blocked, the Truck Present cycle will continue. All the photo-eyes selected here must
be off during a Truck Present Cycle to end a Truck Present cycle.
• Photo-Eyes for Speed Checking: Any photo-eye not used to start the Truck Present
cycle for this direction should be used for speed checking.
• Photo-Eye at Starting end of Detector: This could be the same photo-eye that starts a
Truck Present cycle (if you only have two photo-eyes on your system). There is one
photo-eye at each end of the detector. The one the vehicle will block first in this
direction should be selected here. This gives the system the knowledge it needs to
calculate the Alarm Points properly.
• Photo-Eye at Far End of Detector: This is the photo-eye at the other end of the
detector used for Alarm Point calculations.
If you have a bi-directional system, you will need to set the Reverse Direction Name
section up like you did the Forward Direction Name section. Keep in mind that the
vehicle is now moving in the opposite direction, and the photo-eye settings for the
Forward section should be a mirror image of this section.