Instruction Manual

Detailed Setup
September 2013
4-13
Note
Lag Time is available in firmware 7, 9,
10, and 11.
 Lag Time—Slows the response of the digital
valve controller. A value ranging from 0.2 to 10.0 can
be used for noisy or fast processes to improve closed
loop process control. Entering a value of 0.0 will
deactivate the lag filter. In firmware 7, 9, and 10 this
parameter should be set to 0.
Alert Setup (1-2-3)
The following menus are available for configuring
alerts and shutdowns. Items on the menus may be
changed with the instrument In Service. Protection
does not need to be removed (no need to set to
None). Alerts are not processed when a diagnostic is
in progress. Select Configure, Detailed Setup, and
Alert Setup. Follow the prompts on the Field
Communicator display to configure the following
Alerts: Electronic Alerts, Sensor Alerts, Environment
Alerts, Travel Alerts, Travel History Alerts, SIS Alerts,
and Alert Record.
Note
The Alerts section covers alerts and
shutdowns. An alert, if enabled, can
provide information on operation and
performance issues. A shutdown, if
enabled, and upon the occurrence of
the associated failure alert, will cause
the instrument air output to go to the
Zero Power Condition as per figure
4-6. It will remain latched in that
condition until power to the
instrument is cycled and the failure
alert has cleared. While in shutdown
condition the instrument will remain
powered up and able to communicate
via HART.
Electronics Alerts (1-2-3-1)
 Drive Current Shutdown— Describes the
status of I/P current; should the current fail, the digital
valve controller will drive the output to its safe
condition. Drive Current Shutdown is part of “Self Test
shutdown”. Default is not enabled.
Drive Signal Alert (1-2-3-1-2)
Drive Signal Alert checks the drive signal and
calibrated travel. If one of the following conditions
exists for more than 20 seconds, the Drive Signal Alert
is set.
For the case where Zero Power Condition is defined
as closed:
Drive Signal < 10% and Calibrated Travel > 3%
Drive Signal > 90% and Calibrated Travel < 97%
For the case where Zero Power Condition is defined
as open:
Drive Signal < 10% and Calibrated Travel < 97%
Drive Signal > 90% and Calibrated Travel > 3%
 Drive Signal Alert Enable—Yes or No. Drive
Signal Alert Enable activates checking of the
relationship between the Drive Signal and the
calibrated travel.
 Drive Signal—Shows the value of the instrument
drive signal in % (percent) of maximum drive.
Processor Impaired Alerts (1-2-3-1-3)
 Offline/Failed Alert Enable—If enabled, set when
the device is in a failed state and not controlling the
input.
 Low Power Write Alert Enable—When enabled,
an alert is generated if a write to the instrument is
attempted and fails when the loop current is less than
3.5 mA.
 Non-Critical NVM Alert Enable—When enabled,
an alert is generated whenever there is a failure
associated with non-critical NVM (non-volatile
memory). Default is not enabled.
 Critical NVM Shutdown—When enabled, the
instrument shuts down whenever there is a failure
associated with critical NVM (non-volatile memory).
Default is not enabled.
 Flash ROM Shutdown—When enabled, the
instrument shuts down whenever there is a failure
associated with flash ROM (read only memory).
Default is not enabled.
 No Free Time Shutdown—When enabled, the
instrument shuts down whenever there is a failure
associated with No Free Time. Default is not enabled.
4