Flowserve DFP17 - Manual (Page 15)

WCAIM2037 DataFlo Digital Electronic Positioner DFP17 Installation, Operation and Maintenance Instructions 15
B. Security Code Screen for microchip U5 (AC board) or U3
(DC board) REV. V2.11 and older.
The display will alternately display CodE and 0000.
The correct security code number must be entered to
gain access to the parameter entry screens.
Legal security code values are 0001 to 9999. The security
code is set to 1000 at the factory. For some units the
special code of 4800 may have to be used.
When the correct code is entered, any programmable
parameter can be modified including the security code.
Once a security code is established, it cannot be
displayed and must be remembered.
4.3.2 Unit Address Screen
The display will alternately display Addr and the
communications address, which is factory set at 1 on
new units.
a CAUTION: Do not install two units with the same
address on the same RS-485 bus.
To edit the value, use the UP or DOWN switches to select
a value from 1 thru 255.
4.3.3 Output Current Range
The display will alternately display Ocur and either 4-20
or 0-20.
Edit the value and use the UP or DOWN switches to
select 0-20 or 4-20.
4-20 selects a 4-20 mA output current range.
0-20 selects a 0-20 mA output current range.
A voltage output can be achieved by connecting a
resistor across the current output.
The output current feedback is linear.
4.3.4 Analog Setpoint (Input) Range
The analog setpoint (input) signal range is fixed.
4.3.5 Setpoint Direction - Direct-Acting (Rise), Reverse-
Acting (Fall)
The display will alternately display Sdir and either riSE or
FALL.
Use the UP or DOWN switches to select riSE or FALL.
riSE selects direct-acting positioner control where the
actuator rotates in the CCW direction (opens the valve)
as the setpoint signal increases. The valve is closed (full
CW) at the minimum setpoint signal value.
FALL selects reverse-acting positioner control where the
actuator rotates in the CCW (open) direction as the
setpoint signal decreases. The valve is full CCW (open) at
the minimum setpoint signal value and full CW (closed)
at the maximum setpoint signal value.
4.3.6 Setpoint Split Range START Selection
The display will alternately display SPrS and its value.
For a direct-acting positioner, SPrS specifies the START
of the split range input signal for the full CW (closed)
actuator position, and must be less than SPrE. For a
reverse-acting positioner, SPrS specifies the START of
the split range input signal for the full CCW (open)
actuator position, and must be less than SPrE.
The setting can be anywhere from 0.0 to 99.9% of the
input signal range in 0.1% increments.
Split ranging is useful when more than one valve is used
in a control system. As an example, one actuator can be
calibrated to open for an input signal between 4-12 mA
and another to open for an input signal between 12 and
20 mA.
4.3.7 Setpoint Split Range END Selection
The display will alternately display SPrE and its value.
For a direct-acting positioner, SPrE specifies the END of
the split range input signal for the full CCW (open)
actuator position, and must be greater than SPrS. For a
reverse-acting positioner, SPrE specifies the END of the
split range input signal for the full CW (closed) actuator
position, and must be less than SPrS.
The setting can be anywhere from 0.1 to 100.0% of the
input signal range in 0.1% increments.
4.3.8 Setpoint Ramp - Time to Open
The display alternately displays OPEn and the selected
time to open.
Times from 0 to 200 seconds can be selected as the time
for the actuator to travel from the full closed (CW) to the
full open (CCW) position.
If “0” (or a time less than the CCW travel time) is
selected, the rate of response to a step change in the
input signal will be as fast as the valve actuator can
operate. The slowest time to open is 200 seconds.
The actuator will run to the setpoint at full speed and
then brake if the time to open time setting is less than
that measured in the calibration routine.
4.3.9 Setpoint Ramp - Time to Close
The display alternately displays CLOS and the selected
time to close.
Times from 0 to 200 seconds can be selected as the time
for the actuator to travel from the full open (CCW) to the
full closed (CW) position.
If “0” (or a time less than the CW travel time) is selected,
the rate of response to a step change in the input signal
will be as fast as the valve actuator can operate. The
slowest time to close that can be selected is 200
seconds.
Flow Control
Worcester Actuation Systems