Unipulse F377A, Руководство по эксплуатации

Страница: 43 / 152

5 SETTING OF FUNCTIONS
42
S
E
TTI
N
G OF
FUN
C
TIO
N
S
Chapter
5
■
HI limit / LO limit / HH limit / LL limit
How to set
■
Hysteresis
The hysteresis value may be determined so as to allow a margin for timing the turning off of the HI-
LO limit comparison. Normally, it is turned on when the indicated value exceeds the HI limit and is
turned off when the indicated value falls below it. However, by setting the hysteresis, it is turned off
when the indicated value falls below the HI limit further lowered by the hysteresis value.
This function is effective to prevent chattering in such a case where signals fluctuate (vibrate)
subtly.
〈
Comparison conditions
〉
- HI limit
ON condition: indicated value ＞ HI limit value
OFF condition: indicated value ≦ (HI limit value-hysteresis value)
- LO limit
ON condition: indicated value ＜ LO limit value
OFF condition: indicated value ≧ (LO limit value+hysteresis value)
- HH limit
ON condition: indicated value
＞
HH limit value
OFF condition: indicated value
≦
(HH limit value-hysteresis value)
- LL limit
ON condition: indicated value ＜ LL limit value
OFF condition: indicated value ≧ (LL limit value+hysteresis value)
Setting range: 0 - 9999
How to set
SET. Comp. Setting Page 1
→ →
Work Setting
→
Simple setting call
Press any of the [HH], [HI], [LO] and [LL] buttons at the bottom of the indicated
value display screen to go direct to the entry screen.
SET. Comp. Setting Page 1
→ →
Work Setting
→
Hysteresis setting value is common to all HI limit value.