The User Interface
161
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PEC fault
This option is displayed if the PEC enable option has been selected. When the option is
enabled, should the photo-eye become blocked for any reason a system fault will be generated.
Depending on the reject and conveyor setup the conveyor will then stop and/or a reject
actuation will occur. Three options are available for selection as follows:
O
Off
Selecting this option disables the PEC fault functionality.
O
Latched
Select this option if the fault must be manually cleared after the PEC has been unblocked.
O
Auto Clear
Select this option if the fault is automatically cleared after the PEC has been unblocked.
Tap the arrow to the right of the field to display the drop down list of available noise filter
level options and select the one to be used. The PEC fault option, set to Auto Clear, is set
by default.
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PEC length
To ensure the correct operation of the detector and reject systems it is extremely important to
ensure that this setting is correct.
The calculation for this entry measured in mm or inches depends on the Units option selected in
the
Search Head Setup
screen. 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.
Tap in the PEC length field to display a pop-up numeric keypad, then 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 is 6.
Tap in the field to display a pop-up numeric keypad and enter the required number of packs.
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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.
Содержание IQ3+
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