Users Manual Part 2
Table Of Contents
- Contents
- 1 Preliminary note
- 2 Safety instructions
- 3 Intended use
- 4 Items supplied
- 5 Function
- 6 Mounting
- 7 Electrical connection
- 8 Parameter setting
- 9 Operation
- 10 Troubleshooting
- 10.1 Troubleshooting incorrect level readings
- 10.1.1 Level too high / too low
- 10.1.2 Measured value is stuck
- 10.1.3 Measured value drops when level close to antenna
- 10.1.4 Measured value fluctuates
- 10.1.5 Measured value is occasionally unstable
- 10.1.6 Lagging of measured value during rapid level changes
- 10.1.7 Measured value correct at 0% (4 mA) but incorrect at 100% (20 mA)
- 10.1.8 Incorrect measured value when level is above 50%
- 10.1.9 Measured value drops to zero close to tank bottom
- 10.1.10 Level measurement is lost in an empty tank
- 10.1.11 Alert mode when level close to tank bottom
- 10.1 Troubleshooting incorrect level readings
- 11 Maintenance, repair and disposal
- 12 Factory setting
- 13 Appendix
LW2720 Electronic level sensor
28
Parameter Options Explanation Access
SSC1 Param. SP2 Setting range: 0...14.995m Set point2 for SSC1 (switching signal chan-
nel1).
Only available with window function and in two-
point mode.
Set point2 must be smaller than set point1. If
set point 2 is set higher than set point 1, this will
be rejected by the device software.
!
SSC1 Config. Logic [no] = normally open
[nc] = normally closed
Switching logic for SSC1 (switching signal chan-
nel 1).
SSC1 Config Mode [Deactivated] = switching behaviour de-
activated
[Single point] = hysteresis function single-
point mode
[Window] = window function
[Two point] = hysteresis function two-
point mode
Switching mode for SSC1 (switching signal
channel 1).
SSC1 Config Hyster-
esis
Setting range 0...0.5 m Switching hysteresis for SSC1 (switching signal
channel 1).
Only available in single-point mode and with
window function.
!
dS2 Setting range: 0...60s Switch-on delay for SSC2 (switching signal
channel 2).
The switch-on delay reacts according to VDMA*
)
dr2 Setting range: 0...60s Switch-off delay for SSC2 (switching signal
channel2).
The switch-off delay reacts according to VDMA*
)
SSC2 Param. SP1 Setting range: 0.005...15m Set point1 for SSC2 (switching signal chan-
nel2).
Only available if SSC2 is not deactivated.
Set point1 must be smaller than or equal to the
set tank height [Reference height].
!
SSC2 Param. SP2 Setting range: 0...14.995m Set point2 for SSC2 (switching signal chan-
nel2).
Only available with window function and in two-
point mode.
Set point2 must be smaller than set point1. If
set point 2 is set higher than set point 1, this will
be rejected by the device software.
!
SSC2 Config. Logic [no] = normally open
[nc] = normally closed
Switching logic for SSC2 (switching signal chan-
nel 2).
SSC2 Config. Mode [Deactivated] = switching behaviour de-
activated
[Single point] = hysteresis function single-
point mode
[Window] = window function
[Two point] = hysteresis function two-
point mode
Switching mode for SSC2 (switching signal
channel 2).
SSC2 Config. Hys-
teresis
Setting range 0...0.5 m Switching hysteresis for SSC2 (switching signal
channel 2).
Only available in single-point mode and with
window function.
!
ASP2 Setting range: 0...14m Analogue start point:
measured value at which 4 mA is output
Menu item only visible if analogue output ([ou2]
= [I]) is selected.
!
AEP2 Setting range: 0.2...15m Analogue end point:
measured value at which 20 mA is output
Menu item only visible if analogue output ([ou2]
= [I]) is selected.
!