Smart Positioner
YT-3700 / 3750
Product Manual
Ver. 1.03
81
8.12
Diagnosis Mode (dIAGNd)
Followings are the values changeable at the dIAGNO Mode.
1) Default Alarm Settings
2) Process Status (PS)
3) Device Status (dS)
4) View Monitoring Counts (VI CNTS)
5) Diagnostic Limit Configuration (LIMT CFG)
6) Reset Alarm Status (RST ALRM)
7) View Event Log (EVT LOG)
8) Partial Stroke Test Record (View PST Result Record, PST RSLT)
9) PST Configuration (PST CFG)
10) Run PST (PST NOW)
11) Periodic PST Test (PST Schedule, PST SCHd)
8.12.1 Default Alarm Settings
The table below shows the initial values set at factory for handling the positioner status or associated
process conditions. To trigger any alarm automatically when a specific event occurs, the
corresponding alarm needs to be set to “Enable”. Each status or alarm is also set to either Failure,
Out of Specification, Maintenance Required, or Functional Check depending on the classification of
the NE107 signal, so that the corresponding NE107 symbol is displayed when a preset alarm occurs.
This setting can be reassigned to the one of NE107 signals, depending on the operator's decision. As
shown in the table below, the status / alarms that can be manually reset are Auto Calibration Running,
Diagnosis Running, Critical NVM Fail, Non-Critical NVM Fail, PST Fail and Auto Calibration Fail. The
activation of each status / alarm and the classification of NE107 signals can be set through HART
communication, and the five alarms below can be even activated using the LCD screen and button.
Travel High Limit, Travel Low Limit, Temperature High Limit, Temperature Low Limit, Deviation
Timeout
Status / Alarm
Activation NE107 signals
Is the Status or Alarm reset
manually?
Local Operation Active
Enable
Functional Check
No
Auto Calibration Running
Enable
Functional Check
Yes
PST Running
Enable
Functional Check
No
Diagnosis Running
Enable
Functional Check
Yes
Position Sensor High Limit
Disable
Out of Specification
No
Position Sensor Low Limit
Disable
Out of Specification
No
Critical NVM Fail
Enable
Failure
Yes
Non Crtical NVM Fail
Disable
Failure
Yes
