Checkweigh Mode - Rice Lake 520 Installation Manual

7.0

Checkweigh Mode

The 520 provides a checkweigh mode that can be
enabled for either absolute values (ABS) or percent
values (PERCENT). ABSOLUTE mode allows you to
enter actual weight values for over and under. Actual
values entered can be either positive or negative.
PERCENT mode allows you to enter a target weight
value and percentages of this value (in whole percent
values) for over and under.
The WAITSS print mode performs an automatic print
any time the weight settles out of motion within the
ACCEPT range. The autoprint is re-armed each time
the scale goes into motion and then achieves standstill
within the acceptable weight range. The TARGET
print mode performs automatic print any time the
weight settles out of motion within the ACCEPT
range. To re-arm, the scale weight must return to
within the zero band, as specified in the CKZBAND
parameter, and then achieve standstill again within the
acceptable weight range.
Digital output one will be active (ON) when the
weight is within the UNDER range, digital output two
will be active when the weight is in the ACCEPT
range, and digital output three is active when the
weight is within the OVER range.
In checkweigh mode there is an accompanying
bargraph displayed on the .25" VFD. The under range
presentation is from the right side to the center.
During the ACCEPT bandwidth, the prompt
is displayed. The over range presentation is from the
center to the left side.
The value for the under range determines the bargraph
bandwidth for both the under and over range.
Therefore, if the under range is 0 to 10 pounds, the
over range will also represent a 10 pound range.
ACCEPT
Figure 7-1. Bar Graph Ranges
A tare can be entered to allow net mode
checkweighing. When a tare weight is entered, the
ACCEPT range will be a net value. The under and
over range bargraph will still track gross weight.
The ABSOLUTE mode can be used to check weight
in either the gross or net mode. However, for
checkweighing around zero (negative under value),
the entered values should be net values. In the
absolute mode, when a negative gross value is entered,
the bargraph only displays the ACCEPT range.
NOTE:
setpoints will remain configured but will not function
until checkweigh is disabled.
To display a checkweigh value, enter front panel setup
mode.
NOTE:
UNITS
mode, press the
pressed for 10 seconds, the program will time out and
exit
Press
checkweigh value is displayed. The
keys will toggle through each checkweigh value that
is operator accessible. Press
checkweigh value.
To change the checkweigh value, use the
keys to increment/decrement the decimal value of the
flashing digit. Press
decimal point entry.
decimal point placement. Press the
accept the displayed value and return to the next value
ACCEPT
or checkweigh value prompt.
NOTE:
checkweigh values to be changed through the front
panel or may require a password to display or change
the checkweigh value.
Under Range
Accept Range
Over Range
If the checkweigh function is enabled,
To enter front panel setup mode, hold the
key for five seconds. To exit the bargraph
key at any prompt. If no keys are
UP
or and the first available
DOWN ENTER
ENTER
ENTER
LEFT/RIGHT
Some indicator configurations may not allow
Checkweigh Mode
LEFT/RIGHT
to display the
UP/DOWN
to sequence to the
keys adjust the
ENTER
key to
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