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 125 of 206
options:
- Not initialized;
- Opening (100%);
- Closing (0%);
- None (actual position).
Valve Serial Number: Serial number of the valve belonging to the
positioner or the electronic device.
Actuator Serial Number: Serial number of the actuator belonging to the
positioner or the electronic device.
9.9.2.3 Transducer Block Specific Parameters
Position Unit: Engineering unit for the position, defined in the
AO.PV_SCALE parameter.
Working SP: Process variable from the analog output block after
characterization, FLOP and reverse acting
(SIGNAL_ACTION) in POSITION_UNITS
Working Position: Hall sensor value in engineering unit defined in the
POSITION_UNITS parameter.
Position: The result of reverse characterization of the
WORKING_POSITION parameter value.
Feedback Source: Select which position value will be copy to
FEEDBACK_VALUE parameter. The available sources
are the Working Position and Position.
Display Mode: If set to “OFF”, the LCD shows the setpoint and the
position as % open, if “ON”, as % closed.
Control Mode: Set if the servo PID will acting directly to the setpoint or if
it will acting reverse. In the reverse mode increasing the
setpoint will close the valve. The options available are:
- Increase to Open
- Increase to Close
The Increase to Close option set the reverse acting
mode.
Opening Speed Limit: Used to reduce the speed of the open valve movement.
This parameter will change the value of
TRAVEL_RATE_DEC for a value equal to one of the
fallowing options:
-
Slowest
: 20% Dynamic Speed;
-
Slow
: 40% Dynamic Speed;
-
Normal
: 60% Dynamic Speed;
-
Fast
: 80% Dynamic Speed;
-
Fastest
: 100% Dynamic Speed;
-
Custom
: Uses the travel rate defined in the Travel Time CLOSE
filed (TRAVEL_RATE_DEC parameter).
