8400-M022-O1 Rev K
Model 190 Indicator
60
Preset Weight Comparators
The Model 190 has three (3) outputs, which can be configured during setup to perform as
Preset Weight Comparators “PWC”. The output state of each PWC (before reaching the preset
weight) is defined in the section SETUP,
d out=
(Digital Output) parameter.
With the PWC feature selected, during operation, the indicator will compare each enabled
preset weight value with the displayed weight and then output a signal for each preset based
on the comparison results.
Entering Preset Weight Comparators Values
1.
To enter the Preset Weight Comparators values, simultaneously press the
Fn/
key and
the
key.
2.
The display will change to show
Prt=
(the prompt for Print Ticket Format selection).
Refer to the previous section for details on selecting a Print Ticket Format.
3.
Press the
TARE
key again to skip the Print Ticket Format selection.
4.
The display will change to show
PSEt1=
.
5.
Press the
TARE
key to display the current value of the first preset weight value.
6.
If the setting displayed is acceptable, press the
TARE
key again to save it.
7.
Otherwise, use the
Fn/
and
UNITS/
keys to enter a new value for the preset weight.
8.
When the desired value is displayed, press the
TARE
key to save it.
9.
Continue with this procedure until a value for each preset to be used has been entered.
10.
After the last preset value has been entered and the
TARE
key pressed, the
indicator will return to the weight display.
Preset Weight Comparators Operation
The preset weight comparators are used to control peripheral devices used in some form of
process control. The number of comparators used depends upon system needs.
For example, in a simple filling operation, a single comparator may be used to open or close a
gate that dumps material on the scale. In a more complex application, more comparators may
be used for high-speed/low-speed filling.
The
d out=
(Digital Output) setup parameter selects how many comparators are being used
and the state of the output when the scale weight is below the preset target or cutoff weight.
The output can be in one of two states: connected to the common pin on the I/O connector or
not connected to the common pin on the I/O connector. When the scale weight is greater than
or equal to the cutoff weight, the output will change state.