DVC2000 Digital Valve Controller
July 2009
5-4
Failure Alerts—If a self-test failure has
occurred, it will appear when the Failure Alerts menu
item is selected. If there are multiple failures, they will
appear on the display one at a time in the order listed
below.
1. Offline/Failed—This failure indicates a failure,
enabled from the Self Test Shutdown menu, caused
an instrument shutdown. Press Enter to see which of
the specific failures caused the Offline/Failed
indication.
2. Travel Sensor Fail—This failure indicates the
sensed travel is outside the range of
−
25.0 to 125.0%
of calibrated travel. If this failure is indicated, check
the instrument mounting.
3. Pressure Sensor Fail—This failure indicates the
actuator pressure is outside the range of
−
24.0 to
125.0% of the calibrated pressure for more than 60
seconds. If this failure is indicated, check the
instrument supply pressure. If the failure persists,
ensure the printed wiring board assembly is properly
mounted onto the mounting frame, and the pressure
sensor O-rings are properly installed. If the failure
does not clear after restarting the instrument, replace
the printed wiring board assembly.
4. Temperature Sensor Fail—This failure is indicated
when the instrument temperature sensor fails, or the
sensor reading is outside of the range of
−
40 to 85
C
(
−
40 to 185
F). The temperature reading is used
internally for temperature compensation of inputs. If
this failure is indicated, restart the instrument and see
if it clears. If it does not clear, replace the printed
wiring board assembly.
5. Critical NVM Fail—This failure is indicated when
the Non-Volatile Memory integrity test fails.
Configuration data is stored in NVM. If this failure is
indicated, restart the instrument and see if it clears. If
it does not clear, replace the printed wiring board
Assembly.
6. Drive Current Fail—This failure is indicated when
the drive current does not read as expected. If this
failure occurs, check the connection between the I/P
converter and the printed wiring board assembly. Try
removing the I/P converter and re-installing it. If the
failure does not clear, replace the I/P converter or the
printed wiring board assembly.
Table 5-2. Alerts Included in Alert Groups for Alert Record
Alert Group
Alerts Include in Group
Valve Alerts
Travel Alert Lo
Travel Alert Hi
Travel Alert Lo Lo
Travel Alert Hi Hi
Travel deviation
Drive signal
Failure Alerts
No free time
Flash ROM fail
Drive current fail
Ref Voltage fail
NVM fail
Temperature sensor fail
Pressure sensor fail
Travel sensor fail
7. Ref Voltage Fail—This failure is indicated
whenever there is a failure associated with the internal
voltage reference. If this failure is indicated, restart the
instrument and see if it clears. If it does not clear,
replace the printed wiring board assembly.
8. No Free Time—This failure is indicated if the
instrument is unable to complete all of the configured
tasks. This will not occur with a properly functioning
instrument.
9. Flash ROM Fail—This failure indicates the Read
Only Memory integrity test failed. If this failure is
indicated, restart the instrument and see if it clears. If
it does not clear, replace the printed wiring board
assembly.
Alert Record—The instrument contains an alert
record that can store up to 20 alerts from any of the
enabled alert groups: Valve Alerts or Failure Alerts.
See the Advanced Setup section for information on
enabling alert groups. Table 5-2 lists the alerts
included in each of the groups. The alert record also
includes the date and time (from the instrument clock)
the alerts occurred.
Operational Status—This menu item indicates
the status of the Operational items listed below. The
status of more than one operational may be indicated.
If more than one Operational status is set, they will
appear on the display one at a time in the order listed
below.
1. Out of Service
2. Auto Calibration in Progress
3. Input Char Selected
4. Custom Char Selected
5. Diagnostic in Progress
6. Calibration in Progress
7. Set Point Filter Active
5
Содержание Fisher FIELDVUE DVC2000
Страница 40: ...DVC2000 Digital Valve Controller July 2009 3 14 3 ...
Страница 70: ...DVC2000 Digital Valve Controller July 2009 6 10 6 ...
Страница 71: ...Parts July 2009 7 1 7 7 Section 7 Parts Parts Ordering 7 2 Parts Kits 7 2 Parts List 7 2 7 ...
Страница 77: ...Principle of Operation July 2009 A 1 A A Appendix A Principle of Operation DVC2000 Operation A 2 A ...
Страница 80: ...DVC2000 Digital Valve Controller July 2009 A 4 A ...
Страница 104: ...DVC2000 Digital Valve Controller July 2009 Index 8 C Index ...
Страница 105: ......
