Flowserve Electri-SAFE DataFlo Digital Electronic Positioner - Manual (Page 6)

6 Electri-SAFE DataFlo Digital Electronic Positioner WCAIM2025
Flow Control Division
Worcester Controls
Press and hold the UP key until the actuator goes full CCW and stops
moving. The actuator should be full CCW, and there should be no
motor noise.
If the motor continues to run, turn the limit switch adjustment screw
clockwise until the motor stops running. Turn the adjustment screw
clockwise an additional
1 /
4
turn to set the switch. Verify the switch
setting by:
Press the DN key to rotate the actuator shaft about 20 degrees
CW.
Turn the limit switch adjusting screw counterclockwise 1 /
2
turn.
Press and hold the UP key until the actuator shaft rotates to full
CCW and stops moving.
If the actuator is not at full open:
Press the DN key to rotate the actuator shaft about 20 degrees
CW.
Turn the limit switch adjusting screw counterclockwise 1 /
2
turn.
Press and hold the UP key until the actuator shaft rotates to full
CCW and stops moving.
Repeat until the actuator is full open and there is no motor noise.
The actuator shaft must travel a couple of degrees beyond the 90
degree full CCW position for the Positioner to control the full range of
operation. Place a straightedge along the flats on the actuator shaft to
verify that the actuator has gone past the 90 degree position when
stopped by the limit switch.
To return to the RUN mode, press and hold the SEL key for three to
five seconds.
Calibration Procedures for Positioner
See the Technical Reference Manual for more detailed programming
information.
When power is first applied the unit will be in the Run Mode. The
display should be flashing between POS and a number between 0 and
100.
Simultaneously press and hold the SEL and DN switches (keys) for
three seconds to enter the calibration mode. When first entering the
Calibration Mode, CAL will be displayed for two seconds and the
security code will be checked. If the required security code is not zero
(“0000”), the display will begin alternating between codE and 0000.
Enter the security code as described in paragraph 4.4.1 and per
paragraph 4.3.6 of the Technical Reference Manual. If the required
security code is zero, it will not need to be entered by the user, i.e., it
will be bypassed and the display will automatically flash SEtL, and you
can skip to paragraph b). Note: if the security code is forgotten, the
special number 4800 can be used to gain entry. However, this number
will now be the new security code and if another code number is still
desired, it will have to be reprogrammed.
a. If and after a security code has been entered, press and release
SEL to accept code. The display will now flash SEtL and a value.
b. Simultaneously press and release the SEL and UP keys, then
adjust input signal to lower input value, e.g., 4 mA. Press and
release SEL to lock in value.
c. Press and release the DN key, the display will now flash SEtU and
a value. Simultaneously press and release SEL and UP, and then
adjust input signal to higher input value, e.g., 20 mA. Press and
release SEL to lock value.
d. Press and release DN, the display will now flash PoC and a
number between 0.0 and 5.0. Simultaneously press and release
SEL and UP. Rotate the actuator to the full clockwise CW position
by pressing and holding the DN key. Release the DN key when full
rotation has been achieved.
Important: Be careful not to go past the CW “0” degree position.
(Position a straightedge along the flats on the positioner shaft to
verify the shaft position). The display should read between .200 and
.400 . If not: rotate the face gear located on the positioner shaft (that
drives the potentiometer) until you read between .200 and .400. The
gear is held in place by means of a friction fit and a snap ring. No
tools are needed nor is it necessary to loosen or remove the snap
ring to move the gear. Steady gentle finger pressure will move the
gear to allow you to adjust the feedback pot. Press and release SEL to
lock in value.
e. Press and release the DN key, the display will now flash PoCC and
the feedback voltage value. To edit, simultaneously press and
release SEL and UP switches then: Use the UP switch to manually
rotate the actuator to the CCW 90° position. (Do not go past 90° -
Place a ruler on the positioner shaft flat for indication.) If the shaft
rotates past 90°, use the DOWN switch to bring the shaft back to
the 90° position. Press the SEL switch to lock in the 90° feedback
reading. Control returns to the Calibration menu.
f. Press and release the DN key, the display will now flash Cyt and a
cycle time reading. Simultaneously press and release the SEL
and UP keys. At this time the actuator will perform one cycle to
measure its cycle time displaying PoC as the actuator travels to
the full CW position and PoCC for the CCW position.
g. To return to the RUN mode, press and hold the SEL key for three
to five seconds.
OPERATION
When power is applied to the positioner, it enters the Run Mode and
begins controlling the valve position according to its setpoint input.
The valve position is controlled to within the dead band setting of
setpoint. See the discussion on dead band in the Technical Reference
Manual.
Programmable parameters are available to control the behavior of the
positioner. Parameters are used to detect alarm conditions, to change
the setpoint curve, to set positioning precision and other functions.
An RS485 connector located on circuit board is supplied for computer
interface to program all parameters. See the Technical Reference
Manual for further reference.