Unipulse F805AT-CK, Руководство по эксплуатации

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7.FUNCTION AS A WEIGHT CHECKER
49
Conditional formula
Near zero Turns ON when weight value
≦
NEAR ZERO set value.
Taking in Turns ON when data is being taken in.
Over Turns ON when RESULT > FINAL S OVER SETTING.
Go Turns ON when FINAL SETTING - UNDER SETTING
≦
RESULT
≦
FINAL S OVER SETTING.
Under Turns ON when RESULT < FINAL SETTING - UNDER SETTING.
Complete Turns ON for the COMPLETE signal output time after completion of taking-in of data
and after processing of RESULT calculation.
* The RESULT calculation processing time is approximately 50msec.
* The OVER/FINAL/UNDER signal turns ON only while the COMPLETE signal is output.
Select NEAR ZERO COMPARISON from GROSS/NET by the setting of NEAR ZERO COMPARISON.
Select OVER/UNDER COMPARISON from GROSS/NET by the setting of OVER/UNDER COMPARISON.
7-1-3. Points to be noted in measuring
Filter settings
Adjust the “ DIGITAL FILTER ” and “ ANALOG FILTER ” in the “ OPERATION ” settings, and set
optimum values so as to remove noise components, such as vibration, and to obtain sufficient rising
characteristics.
The relationship between parameter changes, stability, and response is as shown in the table below.
(Refer to "6-1-2. Digital filter" on Page37, "6-1-3. Analog filter" on Page37.)
Prevention of double placement
Double placement is a state in which two or more measuring objects are placed on the load-sensing part.
Take the distance (
d ) between measuring objects longer than the load-sensing part ( l ). Be aware that
accurate weighing cannot be performed especially in “DYNAMIC MODE” .
Setting of ANALOG FILTER Low frequency High frequency
Stability Stable
⇔
Unstable
Response Slow
⇔
Fast
Setting of DIGITAL FILTER High count Low count
Stability Stable
⇔
Unstable
Response Slow
⇔
Fast
F
Near zero
0
t
NET
d
l
E F
◇
Example of double placement (
d
<
l
)
There is a possibility that
E
the near zero may not be applied.