7000 SERIES INDICATORS
EN 71
4.3.4
Operating Sequence
The following sections describe operation of the Checkweighing application.
Checkweighing Sequence
Begin with the scale empty and the indicator in the Checkweighing application.
1.
Press ZERO
to capture an accurate zero reference.
2.
Enter the target and tolerance values for the product to be weighed. There are several different methods to
enter these values
– refer to the Target Entry section starting on page 71.
3.
If checkweighing will be done in the net mode, enter the tare weight of the product container by either placing
an empty container on the scale and pressing the
TARE
key
, or by using the numeric keypad to enter
the preset tare value and then pressing the
TARE
key
.
4.
Place the product to be weighed onto the scale.
5.
The weight of the product or the weight difference from target will be shown on the display as selected in
setup.
6.
The zone into w
hich the product’s weight falls will be indicated at the bottom of the display as Under, OK or
Over.
7.
If the remote I/O is being used for indicator lights, the lights will also indicate the zone.
8.
Press PRINT
to print the resulting weight. If Auto Print is enabled, the indicator will automatically trigger a
demand output when it determines a no-motion condition.
9.
Remove the product from the scale.
10. If checkweighing the same product again, place the next product on the scale and view its weight and zone
status.
Operation Below 10% of Target
When scale weight is below 10% of the assigned target value, the discrete outputs (if configured) are turned OFF,
so that the Under output does not remain ON all the time when the scale is empty.
Target Entry
Target parameters for the T72XW Checkweighing application can be entered in any of five ways:
by accessing Active Values from the Operator
Menu
by using Quick Set from the Operator Menu
by opening the Target Table from the Operator
Menu
by quick recall using the numeric keypad and ID
key
in setup mode at the Target Values screen
Active Values
To set the target parameters via the Active Values screen:
1.
Press MENU
to view the Operator Menu.
2.
Use the arrow keys to select the Active Values icon
, then press
ENTER
. The Active Value icon must
be enabled in the Menu Keys setting.
3.
The Active Values screen will display, with a set of entry fields that vary depending on the type of tolerance
selected as shown in Table 4-1.
Table 4-1: Elements of the Active Values Screen
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