Unipulse F377A, Operation Manual

Page: 51 / 152

5 SETTING OF FUNCTIONS
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Chapter
5
■
Hold setting --- Average value ---
Average sample number
In average hold, the average in each sampling can be detected for up to 5 seconds. Then, if the
average sample number is set at 2 or more, the representative value of the sampling values by the
set number (average by the number) is adopted as the sampling data used for average calculation.
The maximum average value detection time with the setting “1” is 5 sec., but the average value
detection time can be extended by this setting.
Maximum average value detection time
＝
Average sample number
×
5
［
sec.
］
where the number of updates of the average value will decrease.
Number of updates of the average value
＝2000 /
Average sample number
［
times/sec.
］
Setting range: 1 - 999 times
How to set
■
Hold operation
Sample hold
When the T/H signal is inputted, a desired point is held, and the H/E output is turned on.
Hold of the value continues as long as the T/H signal is on.
t1: A delay time between the instant
when the T/H signal is inputted and
the instant when the indicated value
is held
1.0ms (max.)
t2: A delay time between the instant
when the T/H signal is released and
the instant
when the indicated value returns to
tracking
1.0ms (max.)
t3: A minimum reset signal width
required for releasing the hold
1.0ms (min.)
SET. Hold Setting Page 2
→ →
Work Setting
→
About the maximum average value detection time
Although the detection section is specified by the SECTION signal, etc., detection
cannot be carried out exceeding the maximum average value detection time set
according to the average sample number. If the maximum average value detection
time is exceeded, detection ends automatically, when the average value is held.
Indicated Value
t2
t3
t1
Sensor Input Value
Hold Section
Decide
t
＋
T/H
HI-LO Limit
Judging Output
H/E
OFF
ON
OFF
ON
OFF
ON
HOLD
OFF
ON
Button
HOLD
Status Display
Status Display
ON Blink Blink
OFF
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