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 177 of 206
Check Back: Detailed information of the actuator, coded bit-by-
bit, which are:
- Field device in fail safe position;
- Request for local operation;
- Field device under local control;
- Emergency override active;
- discrepancy in direction;
- Torque limit in OPEN direction exceeded;
- Torque limit in CLOSE direction exceeded;
- Actuator travel time exceeded;
- Actuator moving to OPEN;
- Actuator moving to CLOSE;
- Update alert;
- Simulation enabled;
- Internal control loop disturbed;
- Positioning inactive;
- Device under self-test;
- Total valve travel limit exceeded;
- Zero point position cannot be reached.
Check Back Mask: Definition of supported Diagnosis information bits.
Simulation
Simulation Value: For commissioning and maintenance reasons, it is
possible to simulate the Read back by defining the
value and the status. That means that the
Transducer Block and the Function Block will be
disconnected.
Status (Simulation Value): Status for the simulate value.
Simulation: Enable or disable the simulation.
INCREASE_CLOSE
Direction: Direction of positioner. 0 = Rising (increasing of
setpoint input results in opening of the valve). 1 =
Falling (increasing of setpoint input results in closing
the valve).
OUT
Output Value: Process variable in engineering units in AUTO
mode. In MAN and RCAS modes, this is the value
specified by the operator/engineer in LO.
Status (Output): Current status of the Output.
OUT_SCALE
Upper Value: Upper value (Output Signal Range): Upper range
value of the process variable (100%) in engineering
units.
