Danieli Automation ID2202 Посібник з монтажу, експлуатації та обслуговування - Сторінка 7
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3.3
S
ENSITIVITY CONTROL POTENTIOMETER
The single-turn potentiometer, located on the rear panel, provides the fine control of the material
presence threshold and also allows you to set the ID2202 detection sensitivity. The potentiometer's
shaft is equipped with a shock-proof protection and can be activated by means of a screwdriver.
The diagram shows the minimum detectable temperature for a rolled product having 10 mm diameter,
placed at a distance of 500 mm from the front glass, depending on the position of the potentiometer,
and according to the selected sensitivity through SSEL input.
For instance, if the potentiometer is at 100% (maximum sensitivity), the minimum detectable
temperature is 450° C if SSEL = OFF (high sensitivit y), or about 640° C if SSEL = ON (low sensitivity).
The minimum detectable temperature varies according to the rolled product diameter and distance.
3.4
LED
LAMPS
There are two: one front LED lamp and a rear LED lamp.
The front LED, high-brightness green, that can be seen through the optical window, is activated along
with the rear green LED and at the MATP output when presence of material is detected.
The LED allows the operator, provided with an electric torch (with filament lamp) to identify where the
ID2202 field of view is. The operator comes in front of the HMD and moves the torch (aimed at the
HMD) in the area where it is assumed the HMD' field of view is. Sighting can be precisely identified by
the corresponding switching on of the LED.
The two-toned green/red LED on the rear panel is activated in the following conditions:
the green colour switches on in the presence of material
if the light intensity received is near the threshold of material detection, the red light flashes more
and more rapidly as the threshold comes closer (at the same time the HEALTHY output is
deactivated)
the red light flashes slowly for internal overheating (at the same time the HEALTHY output is
deactivated).
The red light flash in the absence of a bar indicates that the background light detected in the reading
field is too strong and might compromise the accuracy of the reading.
The red light flash in the presence of a bar (together with the activation of the green-coloured LED)
indicates that the signal is weak and therefore very close to the threshold of detection that determines
the presence of the bar.
Certified by OneDoc A.620.107 Rev.04-MU 30/145 #1061394
Danieli Automation Standard - Installation Use and Maintenance Manual - ID2202
Low Sensitivity
High Sensitivity
6.
Minimum detectable temperature depending on the potentiometer position
Installation, use and maintenance manual
29