Unipulse F371, Руководство по эксплуатации

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7.HOLD FUNCTIONS
62
7-5-6. Inflection Point Hold
Detection starts when the indicated value crosses the auto start level with the H/M signal
inputted. Detection is performed as long as the H/M signal is on.
The hold is released by turning on the T/H signal as a reset signal.
The H/E output signal is on between the instant when the hold starts and the instant when
the T/H signal is turned on.
If the auto start level is not needed as a starting condition of the detection period, set
99999.
(Example) Inflection Point Hold
t1
：
A delay time between the instant when the indicated value exceeds the auto start
level and the instant when the value to be held is detected
0.5ms (max.)
t2 ： A delay time between the instant when the H/M signal is inputted and the instant
when the value to be held is detected
1.0ms (max.)
t3
：
A minimum reset signal width required for releasing the hold
1.0ms (min.)
Indicated Value
t3
Sensor Input Value
Detection
t
＋
HI-LO Limit
Judging Output
Hold Period
Decide
H/M
t2
t1
Auto Start Level
T/H
H/E
OFF
ON
OFF
ON
OFF
ON
OFF
ON
HOLD
PEAK
ON
Blink ON
OFF
※
ON
OFF
OFF
OFF
HOLD
Buttun
OFF
ON
or
OFF
※ Comes on if a value is held with conditions met in the
detection period, and goes out if a value is not held.