Instruction Manual
D103176X012
Detailed Setup and Calibration
June 2017
19
Travel Limit Lo—Defines the low limit for the travel in percent (%) of ranged travel. It is the minimum allowable travel
(in percent of ranged travel) for the valve. During operation, the travel target will not exceed this limit. When a
Travel Limit Low is set, the Travel Cutoff Low is deactivated, since only one of these parameters can be active. Travel
Limit Low is deactivated by setting it to -25.0%.
Travel Cutoff Hi—Defines the high cutoff point for the travel in percent (%) of ranged travel. Above this cutoff, the
travel target is set to 123.0% of the ranged travel. When a Travel Cutoff High is set, the Travel Limit High is
deactivated, since only one of these parameters can be active. Travel Cutoff High is deactivated by setting it to
125.0%.
Travel Cutoff Lo—Defines the low cutoff point for the travel. Travel Cutoff Low can be used to ensure proper seat load
is applied to the valve. When below the travel cutoff low, the output is set to zero or to full supply pressure,
depending upon the zero control signal. A Travel Cutoff Low of 0.5% is recommended to help ensure maximum
shutoff seat loading.
When a Travel Cutoff Low is set, the Travel Limit Low is deactivated, since only one of these parameters can be
active. Travel Cutoff Low is deactivated by setting it to -25.0%.
D Min Open/Close
Min Opening Time—Minimum Opening Time is configured in seconds and defines the minimum time for the travel to
increase the entire ranged travel. This rate is applied to any travel increases. A value of 0.0 seconds deactivates this
feature and allows the valve to stroke open as fast as possible. This parameter should be set to 0 in firmware 1, 2, 3,
and 4.
Min Closing Time—Minimum Closing Time is configured in seconds and defines the minimum time for the travel to
decrease the entire ranged travel. This rate is applied to any travel decreases. A value of 0.0 seconds deactivates this
feature and allows the valve to stroke closed as fast as possible. This parameter should be set to 0 in firmware 1, 2,
3, and 4.
D Integral Settings
Enab Int Control—Select Yes or No
Integral Gain—By setting this value to 0.0 the positioner integrator is disabled. Any other value will provide reset
action to improve static performance.
Integral Dead Zone—When the travel target and actual target deviate by less than this amount, the integrator is
automatically disabled. This prevents the positioner integrator from fighting with the process controller integrator
which may result in valve oscillation.
Setting Alerts
Field Communicator Setup & Diag > Detailed Setup > Alerts (1-2-7)
The following menus are available for configuring Alerts. 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. Follow the prompts on the Field Communicator display to configure alerts.
Note
Alerts are not available with instrument level AC.
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