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31
Redefining Flow Control
basic setup
2. seT ouTpuT ToRQue/ThRusT
Before operating the actuator electrically it may be necessary
to reduce the output torque or thrust of the actuator to
prevent valve becoming jammed at the end of travel during
setup.
Use UP/DOWN buttons until TORQ C is displayed.
Press ENTER to view the Close Output Torque or Thrust value.
Fig 31.2 shows the Closing Torque value set to 40% of the
actuators rated value.
If the set value is correct press CANCEL to return back to
previous menu.
noTe: The output Torque or Thrust setting must be
sufficient to operate the valve under full working
process conditions.
STEP 1
SELECT LOCAL
OPERATION
STEP 2
SET OUTPUT
TORQUE/THRUST
STEP 4
SET CLOSE LIMIT
OF TRAVEL
STEP 5
SET OPEN LIMIT
OF TRAVEL
STEP 6
CALIBRATE COMMAND
SIGNAL ZERO SETPOINT
STEP 7
CALIBRATE COMMAND
SIGNAL SPAN SETPOINT
STEP 3
SELECT ACTION AT END
OF TRAVEL ( LIMIT OR FORCE)
STEP 8
DEADBAND
X
LOCAL
TORQ C
Fig. 31.1
X
LOCAL
TC 400
VIEW
%
Fig. 31.2
