WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 180 of 206
LIN_TYPE
Flow Type: Set the type of set point characterization curve. The
following options are available:
-
Linear
: the analog output setpoint from the analog output is
set directly to the servo PID setpoint;
-
Equal Percentage
: the analog output setpoint is used as a
parameter for the equal percentage function to set the servo
PID setpoint;
-
Quick Opening
: the analog output setpoint is used as a
parameter for the quick opening function to set the servo PID
setpoint;
-
User defined (table):
the analog output setpoint is
characterized using a table defined by the user to set the
servo PID setpoint. (
See the Characterization Curve section to
get details how to enter this table).
RATED_TRAVEL
Nominal Valve Stroke/Angle: Nominal stroke of the valve in units of OUT_SCALE.
Selfcalibration
Selfcalibration: A selection of auto-calibration commands, which are
executed by pressing the “Execute” button. The
commands are:
- No reaction of the field device;
- Start self-calibration (auto calibration);
- Reset alarms;
- Reset internal control loop;
- Abort current calibration-procedure.
Status (Selfcalibration): Result or status of the calibration procedures.
PID Coefficients
Proportional-Action Coefficient 1: Proportional-action coefficient for both moving
directions.
Derivative-Action Coefficient 1: Derivative-action coefficient for both moving
directions.
Integral-Action Coefficient 1: Integral-action coefficient for both moving directions.
SETP_CUTOFF
Setpoint Cut-Off CLOSE: Lower level for the setpoint cut-off. The transducer
setpoint will be forced to zero if the AO.output is
equal or smaller than this value.
Setpoint Cut-Off OPEN: Upper level for the setpoint cut-off. The transducer
setpoint will be forced to 100% if the AO.output is
equal or greater than this value.
VALVE_TRAVEL
Total Valve Travel Accumulated valve travel in nominal duty cycles.
Limit Total Valve Travel Limit for the “Total Valve Travel” in duty cycles.