Advanced Poly-Packaging US-4000, Руководство по эксплуатации

Страница: 23 / 54

When the product passes through the eye and the scale is empty, the accumulator door will open dropping
the product onto the scale and initiate the cycle operation. In the WEIGHT mode, the accumulator door
will be open unless the scale is cycling, awaiting a product. A product is detected when the product
weighs greater than the UNDER setpoint (described in the Setting section of the this manual).
MAN CYCLE button is provided to manually cycle the scale for testing and setup.
STATUS box indicates and UNDER, OVER or ACCEPT condition.
CURRENT WT. displays the output from the load cell in real time. LAST WT. is the weight at the point
the scale cycled during its previous cycle operation.
ZERO button is provided to reset the scale to zero, when the scale is empty. This button is useful to avoid
constantly cleaning debris from the scale for instance.
RESET LAST button is provided to hold the CURRENT WT on the scale into memory.
To go to other screens in the program, press the Menu item buttons, located on the right side of the
Operation Screen.
3.13 Setting Screen
The Settings Screen contains the weight value settings, timer settings, units or count settings used to
control the operation of the scale. See Fig. 3-4.
Note: Before changing any values on this screen, toggle the RUN/STOP button to the STOP mode to
prevent personal injury.
To change a value, press the corresponding green button. For some settings such as the UNDER value, a
numeric keypad window will be displayed to change the setting value. Enter the value and press Enter to
accept the value. If entered incorrectly, press Clear, then reenter the value.
UNDER setting is the weight value that initiates the cycle operation while in the WEIGHT cycle mode.
Note: Values below the minimum value or above the maximum value will not be accepted when the enter
key is pressed. Press the clear key and enter a new value that is within the indicated acceptable range.
OVER setting is a value that if exceeded, would cause the product to be rejected. This value is
discretionary since some product that is overweight or contains too many parts could be considered
acceptable.
NOTE: The difference between the UNDER and ACCEPT values and the OVER and ACCEPT values
must be greater than .005 lbs. If the difference is less than or equal to .005 lbs., the scale may accept
product that is considered a reject and vice versa.
REJECT % is provided to when historical data is on hand revealing reject rates for infeed systems. That
rate can be set to that if exceeded would alert the operator that the infeed equipment may not be setup
properly.
SETTLE TIME is provided to allow product or the scale to become motionless before the scale locks the
weight and cycles the rotary drum. By increasing the settle time, the accuracy of the scale increases, but
the production/output decreases.
EYE DELAY is a time that allows the product to accumulator door opening to be delayed. If the product
is falling from a great height, the doors should remain closed until the product hits the accumulator doors,
preventing damage to the scale.