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Instruction Manual
D103621X012
4320
January 2018
47
Maintenance
Follow the Field Communicator prompts to access
Locate Device
,
Calibration
,
Controller
,
Power Module
,
Reset/Restore
.
D
Locate Device
—select Locate Device to command the device to display the Emerson logo to assist a technician in
locating it. Specify the number of repeats at approximate 5 minutes each.
Note
Locate Device is unavailable when the temperature is too low for a usable display, or if the LUI is currently in use for a local
function.
D
Calibration
—used to set travel or rotation end points.
WARNING
During calibration the valve will move full stroke. To avoid personal injury and property damage caused by the release of
pressure or process fluid, isolate the valve from the process and equalize pressure on both sides of the valve or bleed off the
process fluid.
Note
You cannot change the valve set point (i.e. open to closed) when the instrument is in snap-acting mode. This is because the
position signal from the monitored equipment is used to change the state of a different valve. Refer to figure 3 on page 3.
Manual calibration of the output is required when in snap-acting mode.
Calibration Date
—indicates when the instrument was last calibrated.
Sensor Calibration
—allows you to run a calibration on the instrument. Follow the prompts on the Field Communicator
to run Auto or Manual Calibration.
Note
If it takes longer than 5 minutes to move the valve in each direction during Auto Calibration, Manual Calibration will need to be
performed. A normal auto calibration moves from Open > Closed > Open > Closed, and may take up to 20 minutes.
Output Assignment
—allows you to associate the output ports with a stroke direction (open or close) by observing the
action during a stroke. This procedure is used to complete a controller calibration process if Manual Calibration was
used for the sensor, and is the only way to assign output sense in snap-acting mode.
Note
Output Assignment
is only available for units equipped with the on/off control option.