Smart Positioner
YT-3100
Product Manual
Ver. 1.19
65
9.15
Status and Alarm Code
The status and alarm codes can be displayed on the LCD screen as required. Refer to the table below
to check the status and alarm codes, and then take the appropriate action.
(See 9.5 Configuration and Operation)
Alarm
Code
Abbreviation
Status / Alarm name
Description or proposed actions
0
LOPA
Local Operating Active
It indicates the positioner is being operated by manual
operation.
1
CALR
Auto Calibration
Running
It is active when auto-calibration is in progress.
2
DIGR
Diagnostics Running
It is active when diagnosis test such as Step Response
Test, Stroke Time Test, and Trace Test is in progress.
4
PSNH
Position Sensor Hi
Limit
Position sensor is out of range. Check the installed state if
it happened during operation.
5
PSNL
Position Sensor Lo
Limit
Position sensor is out of range. Check the installed state if
it happened during operation.
6
NVMF
Critical NVM Defect
It is active if there is a failure associated with NVM
(Nonvolatile Memory). Initialize the positioner using Default
function and then AUTO 2 calibration. If it is repeated,
replace the electronics board by contacting the
manufacturer or manufacturer’s representative.
7
NVMW
Non-Critical NVM
Defect
15
dVTO
Deviation Time Out
It is active when actual deviation greater than the preset
Deviation persists longer than the preset Deviation Time.
Check if the setting is appropriate or if there is no problem
with the friction of valve/actuator, pneumatic leaks,
insufficient supply pressure.
18
PSNF
Position Sensor Defect
It is active if there is a problem with the position feedback
sensor inside the positioner.
If it is repeated, replace the
electronics board by contacting the manufacturer or
manufacturer’s representative.
19
ABdS
Abnormal Drive Signal
It is active if there is a problem with I/P converter.
If it is
repeated, replace the electronics board by contacting the
manufacturer or manufacturer’s representative.
23
TVCH
Travel Cutoff Hi Limit
It is active when the travel exceeds the available high
stroke of the valve/actuator. The available stroke is already
set during auto calibration. The event is not created when
Tight Shut Open is used. Aging of the valve / actuator
assembly or problem in the positioner sensor.
24
TVCL
Travel Cutoff Lo Limit
It is active when the travel is below the available low stroke
of the valve/actuator. The available stroke is already set
during auto calibration process. The event is not created
when Tight Shut Close is used. Aging of the valve /
actuator assembly or problem in the positioner sensor.
