Loma IQ3, User Manual

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Operating Instructions
The calculation for this entry, measured in mm or inches, depends on the Units option
selected in the Menus > Service > Configuration > General menu. It is calculated as
follows:
1. Measure the distance from the Product Registration Photo-eye to the face of the
detector (L).
2. Measure the depth of the detector case (D).
3. Note the (Rx) distance recorded on the detector serial plate located behind the
detector control panel cover.
4. Put the values into the formula - PEC length = A + (0.5 x D) + Rx.
5. Enter the value as required.
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PEC block packs
If the Product Registration Photo-eye is blocked for the selected number of packs, the
detector will identify this as a fault. Any number of packs may be entered but the default value
is 6.
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Speed mode
There are three options available for selection as follows:
O
Fixed
Select this option if you are using a fixed speed conveyor system. When selected, both
reject delay and dwell timing must be set in the Rejects Setup screen.
O
Variable
Select this option if you are using a conveyor system where the speed is variable or can
be stopped from an external control source. When in use the conveyor drive will have a
shaft encoder fitted that provides timing pulses to the detector electronics whilst the
conveyor is running. A CTB constant entry field and an option to log speed problems will
be visible. When selected both reject delay in distance and dwell timing in time or
distance must be set in the Rejects Setup screen.
O
Freerun
Select this option when there is no transport system in use, other than the effects of
gravity. When selected, the reject dwell timing must be set in the Rejects Setup screen.
A DSP enable option will be visible.
Tap the arrow to the right of the field to display the drop down list of available speed
mode options and select the one to be used.
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Belt speed
This field is displayed if the Fixed speed mode option has been selected. It is important for the
correct operation of the overall system that this entry reflects the actual conveyor speed. The
value can be in metres per minute or feet per minute depending upon the
Units option
selected in the Menus > Service > Configuration > General menu.
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CTB constant
This field is displayed when the Variable Speed mode option is selected.
The value entered is derived from the relationship between the shaft encoder and
circumference of the roller to which it is fitted.
This parameter is the number of pulses (ticks) per metre/foot of belt travel. To calculate this
figure for entry into the CTB constant field, use either the following metric or imperial formula:
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