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4400 Transmitter
October 2023
Non-PV Out Limit indicates that the process applied to the non-primary variable is outside the operating limits of the
field device.
Opening Stroke Time Deviation is active when the time it takes for the valve to move from the closed state to the open
state exceeds the defined Time Open Threshold. Disabled by default.
Out Service indicates the instrument is Out of Service, indicated by a red blinking light.
Note
The cover must be removed for the LED on the local user interface to be visible.
Program Flow Error indicates that the instrument is not performing the expected series of calculations.
Program Memory Alert is active if a pending Flash or NVM failure is present.
PV High Alert indicates that the primary variable has violated the user-specified PV High Alert Point [expressed in
percent (%)].
PV Low Alert indicates that the primary variable has violated the user-specified PV Low Alert Point [expressed in
percent (%)].
PV Out Limit indicates that the process applied to the primary variable is outside the operating limits of the field
device.
RAM Error indicates an error in the RAM test.
Reference Voltage Failure is active if there is a failure associated with the internal voltage reference. If this alert is
active, replace the printed wiring board assembly.
Travel Accumulator Alert is active when the Travel Accumulator value exceeds the Travel Accumulator Alert Point. It
clears after you reset the Travel Accumulator to a value less than the alert point.
Watchdog Reset indicates the watchdog timer has timed out, triggering a hardware reset.
Maintenance
There are no repairable or replaceable parts on the 4400 digital position transmitter, with the exception of the
feedback array/magnet assembly. Contact your
refer to the Parts Kits information below for feedback array kits.
Replacing the Magnetic Feedback Assembly
The magnet assembly material has been specifically chosen to provide a long‐term stable magnetic field. Magnetic
feedback assemblies generally only need to replaced if you want to mount the 4400 transmitter on a different size or
type of actuator. Follow the below instruction to remove and replace the magnet assembly.
26
Emerson sales office
if a replacement 4400 transmitter is needed;
Instruction Manual
D104738X012
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