Waveform Display - ABB LMT Series Operating Instruction

L M T 1 0 0 A N D L M T 2 0 0 | M A G N E TO S T R I C T I V E L E V E L T R A N S M I T T E R S | F F O I/ L M T 1 0 0/ 2 0 0/ F F - E N R E V. A

Waveform display

The LMT series includes an integrated graphic display with
waveform screens that detail signal activity The waveform
display of the LMT series is a useful tool for configuration,
diagnostic and troubleshooting of the device
Left
Down
Symbol Description
Back to previous menu
Scroll to next parameter on this screen
Edit highlighted parameter
Figure 36 Waveform Display
1 Process value label This can be one of the following:
LVL – Level
INT – Interface
PV% – Process Value in percentage
SVL – Sensor Value for Level
SVI – Sensor Value for Interface
2 Value of the parameter selected in item 1
3 Device measurement parameters This gives access to the
4 Value of the parameter selected in item 3
5 Scale of the waveform screen currently displayed The
Up
Right 6 Graphical representation of the threshold level
7 Offset setting reflects the location in the probe (in raw
8 The starting reference voltage value
Accessing the Waveform screen through LMT HMI
STEP 1:
From the Level Information screen press
"Access Level" menu
following 3 parameters:
THD – Threshold
PLS – Pulse Width
BLK – Blanking
choices are one of the following:
For metric units – 5 cm/DIV, 10 cm/DIV, 20 cm/DIV or 40
cm/DIV
For imperial units – 3 in/DIV, 6 in/DIV, 12 in/DIV or 24 in/
DIV
engineering units) from which the signal is displayed and
corresponds to the leftmost side of the waveform plot
– The scroll function , which is accessed by pressing
allows navigation between items 1, 3, 5, & 7
– When the cursor is in positions 5 or 7, press
to change the value
– When the cursor is in position 3 press
to navigate between Threshold, Pulse Width and
Blanking Press in any of those parameters to
change its values
– Press when position 1 or 5 is highlighted to exit the
waveform screen
57
,
or
or
to switch to the