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Logix
®
520MD+ and 510+ Digital Positioners FCD LGENIM0105-15-AQ – 05/16
40
10 POSITIONER FUNCTIONS
(LCD Display)
The optional LCD display provides a variety of useful information and
functions. The Main View shows important information using icons
and scrolling status lines. Using the directional buttons (
.
.
.,
) to
navigate the menu, the user can view detailed information perform
commonly used functions. See Figure 38.
NOTE:
The LCD backlight may change brightness during use. This
is normal. The backlight uses any residual power not used by
other functions of the circuitry. When current supply is low (4mA)
the light will appear darker. When current supply is high (20mA)
the light will appear brighter.
10.1 Main Display View
The main view provides an instant display of important status parame-
ters: Position, Final Command, Scrolling Status Message, Current Alarm
Status and Status Icons.
10.1.1 Position and Command
The current Position and Command are always shown. This shows the
Final Command which has been adjusted according to a Characteri-
zation Curve, MPC, or Soft Limits that have been applied and should
match the Position.
10.1.2 Scrolling Status Messages
The Scrolling Status Message provides the following information as
applicable:
Date and Time – The date and time format is adjustable. See Section
10.3.9 Configuration (Set Time and Date) for more information.
Ambient Temperature – This is the temperature inside the positioner.
Supply Pressure – The supply pressure is available with Advanced and
Pro upgrades.
Friction – This is calculated when the valve moves. Friction is available
with the Pro upgrade.
Actuation Ratio – This is the amount of available force used to move the
valve.
Pneumatic Leak – This is leak beyond normal air consumption. Pneu-
matic Leak is available with the Pro upgrade.
Training Percent Complete – Training tracks key parameters for a period
of time. This data can be used to set more meaningful Alarm and Warn-
ing limits. Training will begin automatically after 24 hours of continuous
operation and end after 90 days of positioner operation. Or use the DTM
to initialize this function. The training status will show only if training
has occurred.
Training Hours Remaining - This shows the hours left in the training
session if training is currently in progress.
Auxiliary Card 1 Status - This shows the type of card in auxiliary card slot 1.
Auxiliary Card 2 Status - This shows the type of card in auxiliary card slot 2.
DIP Switch Override – This indicates that the Configuration (DIP)
Switches do not reflect the actual configuration of the positioner. This
can happen if a Configuration Switch is changed after a Quick-Cal, or if
the configuration is was changed from the DTM. Performing a Quick-
Cal will reset the configuration to what the Configuration Switches
show, which may not be desirable in this case. Ensure the Configuration
Switches are set properly before performing a Quick-Cal.
10.1.3 Current Alarm Status
The Current Alarm Status area shows the highest priority alarm, warn-
ing, alert or status indication. This matches the code indicated by the
flashing LEDs.
10.1.4 Status Icons
Status icons continuously show the state of the features and modes.
Table 18: Status Icons
Icon Location
Icon
Icon Meaning
Upgrade
Level
Standard
Advanced upgrade
Pro upgrade
Command
Source
Analog command mode
Digital command mode
Out of service
Training
Mode
Training in progress
Training complete
(Blanks
raining not started
Pressure
Control
Pressure control locked
(blank)
Pressure control not locked
HART
Communica-
tions
HART communication currently in progress
Burst mode in progress
(blank)
No HART communication currently in progress
Continuous
Stroke Test
(CST)
CST ramping up
CST ramping down
CST holding steady
(blank)
CST not activated