Display Diagram; Menu Structure; Alarms; Software Fault Alarms - MTS Systems Level Plus Interface Manual

6.2 Display Diagram

Fig. 1 Display
UP Arrow – Used to move cursor on screen up and to increment num-
ber
DOWN Arrow – Used to move cursor on screen down and to decrease
number
SCROLL Arrow – Used to move cursor on screen to the right, cursor will
cycle back
ENTER Key – Used to Enter Program Mode, select Highlighted Item, and
Confirm Selection
EXIT Key – Hidden key in the middle of the display that is used to exit
menu at any time
MEASURED VARIABLE – The process variable that is selected to display.
The display will automatically scroll between selected variables.
MEASUREMENT – The numerical value for the MEASURED VARIABLE
shown on the display.
UNITs – Unit of measurement for the MEASURED VARIABLE shown on
the display.
TEMPERATURE – Average temperature for the product in the tank. Only
shown if the level transmitter was purchased with temperature.
NOTIFICATIONS – Four squares with letters. Top left square is blank.
Top right square, A, will only show when there is an alarm. Toggle the
UP Arrow key to view alarms. Bottom right square, F, will only show
when there is a fault. Toggle the DOWN Arrow key to view error codes.
Bottom left square, P, will only show when the units is being program-
med remotely.

6.3 Menu Structure

Go to section 9.3 for more information about how to program the unit
from the display.
• Data From Device
ƒ Display
ƒ Units
` Length Units
` Temp Units
ƒ Set Points
` Prod LVR (4 mA)
` Prd URV (20 mA)
` Prd Current LRV
` Prd Current URV
` Int LRV (4 mA)
` Int URV (20 mA)
` Int Current LRV
` Int Current URV
ƒ Alarm Select
ƒ Signal Strength
` Prod Trig Lvl
` Int Trig Lvl
• Calibrate
ƒ Product Level
` Current Level
` Offset
ƒ Interface Level
` Current Level
` Offset
• Factory
ƒ Settings
` Gradient
` Serial Number
` HW Revision
` SW Revision
` SARA Blanking
` Magnet Blanking
` Gain
` Min Trig Level
ƒ Temp Setup
ƒ Temp Enable
ƒ No of Temp
ƒ Float Config
` Loop 1
` Loop 2
ƒ Damping
` Loop 1
` Loop 2
ƒ Auto Threshold
ƒ Reset to Factory

7. Alarms

MTS has two separate types of alarms featuring both a software fault
alarm and a hardware fault alarm.
7.1 Software Fault Alarm
MTS offers a software fault alarm that will force the 4-20 mA output into
an either a low or high alarm state. The default setting from the factory
is a low alarm state. The low alarm state is ≤ 3.6 mA and the high alarm
state is ≥ 21 mA. The software fault alarm follows the recommendations
set forth by NAMUR NE 43. Typical faults that will cause a software fault
alarm are a missing float, the float in the inactive range, and the level
transmitter looking for the wrong number of floats.
7.2 Hardware Fault Alarm
MTS offers a hardware fault alarm that will force the 4-20 mA output
into a low alarm. The hardware low alarm is 3.2 mA. The hardware low
alarm is triggered when the internal diagnostics of the level transmitter
have detected a hardware issue with the 4-20 mA output.
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