IFM LW2120, Руководство по эксплуатации

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Electronic level sensor LW2120
21
Parameter Options Explanation Access
SSC2 Param. SP1 Setting range: 0.005...15 m Set point 1 for SSC2 (switching channel 2).
Only available if SSC2 is not deactivated.
Set point 1 must be smaller than or equal to the
set tank height [Reference height].
!
SSC2 Param. SP2 Setting range: 0...14.995 m Set point 2 for SSC2 (switching channel 2).
Only available with window function and two-
point mode. !
SSC2 Config. Log-
ic [no] = normally open
[nc] = normally closed Switching logic for SSC2 (switching signal chan-
nel 2).
SSC2 Config.
Mode [Deactivated] = switching behaviour deacti-
vated
[single point] = hysteresis function single
point mode
[window] = window function
[two point] = hysteresis function two point
mode Switching mode for SSC2 (switching signal chan-
nel 2).
SSC2 Config. Hys-
teresis Setting range 0...0.5 m Switching hysteresis for SSC2 (switching chan-
nel 2).
Only available in single-point mode and with win-
dow function. !
ASP2 Setting range: 0...14 m Analogue start point:
measured value at which 4 mA will be provided
Menu item only visible when analogue output is
selected ([ou2] = [I]). !
AEP2 Setting range: 0.2...15 m Analogue end point:
measured value at which 20 mA will be provided
Menu item only visible when analogue output is
selected ([ou2] = [I]). !
FOU2 [On] = analogue output switches to a value
> 21 mA in alarm mode.
Switching output switches ON in alarm
mode.
[OFF] = analogue output switches to a val-
ue < 3.6 mA in alarm mode.
Switching output switches OFF in alarm
mode Response of OUT2 in alert mode.
dAP Setting range: 0...600 s Damping of the measured signal (filter).
S.Lvl Setting range: 0...10 m Level to be simulated in simulation mode.
The set value is not part of the data storage. It is
not stored in the master.
S.Tim [60 min] fixed setting. Simulation time.
Alert mode delay
time Setting range: 0...1000 s When this time has elapsed, a lost measurement
is communicated. Delay time for passing into the
state defined with [FOU2]:
Only effective in case of a fault. Defined state in
the event of a fault (alert mode) (
Ò / 11)
Adjust the delay time to the level change rate of
the application.
Recommendation:
High level change rate = low delay time
Low level change rate = high delay time
Detection threshold Setting range: 0...20,000 mV The signal strength must be greater than the de-
tection threshold to be recognised as a level. (
Ò
Fig. Detection threshold).
*
)
According to VDMA, the switch-on delay always has an effect on set point 1 (e.g. [SSC1 Param.
SP1]), the switch-off delay always on the hysteresis or set point 2 (e.g. [SSC1 Param. SP2])
irrespective of whether the normally open or normally closed function is used.