Fisher® FIELDVUE DVC6200 Digital Valve Controller

Instruction Manual
D103605X012
Device Information, Diagnostics, and Alerts
July 2012
Variable Out of Range—This alert is active if there is a problem with one or more of the following: the analog input
signal, the I/P converter, the pneumatic relay, or the printed wiring board.
Field Device Malfunction—This alert is active if the pressure, position, or temperature sensors are providing invalid
readings.
Internal Sensor Out of Limits—This alert is active if there is a problem with either the pressure sensor or the printed
wiring board assembly.
Travel Sensor Alert—This alert is active if the sensed travel is outside the range of ­25.0 to 125.0% of calibrated
travel. If this alert is active, check the instrument mounting. Also, check that the electrical connection from the
travel sensor is properly plugged into the printed wiring board assembly. After restarting the instrument, if the alert
persists, troubleshoot the printed wiring board assembly or travel sensor.
Temperature Sensor Alert—This alert is active when the instrument temperature sensor fails, or the sensor reading
is outside of the range of ­60 to 100°C (­76 to 212°F). The temperature reading is used internally for temperature
compensation of inputs. If this alert is active, restart the instrument. If the alert persists, replace the printed wiring
board assembly.
Pressure Sensor Alert—This alert is active if any of the 3 pressure sensor readings are outside the range of ­24.0 to
125.0% of the calibrated pressure for more than 60 seconds. If this alert is active, check the instrument supply
pressure, ensure the printed wiring board assembly is properly mounted onto the module base assembly, and
ensure the pressure sensor o­rings are properly installed. If the alert persists after restarting the instrument, replace
the printed wiring board assembly.
Minor Loop Sensor Alert—This alert is active if the pneumatic relay position reading is outside the valid range. If the
alert persists, replace the printed wiring board.
Loop Current Validation Alert—This alert is active if the loop current is significantly out of range, or if there is a
problem with the analog circuit electronics. If this alert is active, restart the instrument with the loop current
verified to be in the 4­20 mA range. If the alert persists, replace the printed wiring board.
Note
If the control system is known to output current beyond 25 mA, Shutdown on Loop Current Validation should not be enabled.
Output Circuit Communication Failure—This alert is active if the output circuit is not responding. If configured as a
position transmitter output, first make sure the transmitter circuit is powered. If the alert persists, make sure the
DIP switch on the main electronics matches the configuration of the OUT terminals. If the alert is still active, replace
the main electronics.
Instrument Time is Approximate Alert—This alert is active if the instrument has been powered down since the last
time the instrument clock was set. To clear the alert, reset the instrument time.
Pressure
Supply Pressure Alert—This alert is active if the supply pressure falls below the supply pressure alert point.
Note
The Supply Pressure Lo alert is available for instrument level AD, PD, and ODV.
49