Worcester actuation systems – Flowserve DFP17 User Manual
Page 21
WCAIM2037
DataFlo Digital Electronic Positioner DFP17 Installation, Operation and Maintenance Instructions
21
4.6.7 Changing Operating Modes
In the Run Mode, holding down the SEL switch
alone for three seconds will switch to the
Program Mode. In the Run Mode, holding down
the SEL and DOWN switches simultaneously for
three seconds will enter the Calibration Mode.
Holding down the SEL and UP switches
simultaneously for three seconds will enter the
Local Mode.
When the Program Mode is entered, Prog will
briefly be displayed before the sequence
described in Section 4.3 begins.
Pressing and holding the SEL switch in the
Program Mode will exit and return to the Run
Mode.
When the Local Mode is entered, Loc will briefly
be displayed before the sequence described in
Section 4.4 begins. Pressing and holding the SEL
switch in the Local Mode will exit and return to
the Run Mode.
When the Calibration Mode is entered, CAL will
briefly be displayed before the sequence
described in Section 4.5 begins.
Pressing and holding the SEL switch in the
Calibration Mode will exit and return to the Run
Mode.
When the Run Mode is reentered, run will be
displayed briefly.
4.7 Default Values (Factory Installed)
When default parameters (described below) are loaded in
Program Mode, they are set as follows: See section 4.8.2
for the procedure to set default values.
Parameter
Default Value
Output Current
4-20 mA
Setpoint Direction
RISE
Split Range Start
0%
Split Range End
100%
Ramp Open Time
0 (ASAP)
Ramp Close Time
0 (ASAP)
Setpoint Function
LINEAR
Deadband
.5%
Loss of Signal Position 0%
Loss of Signal Time
0 seconds
PowerOn Position
0%
PowerOn Delay Time
0 seconds
Lower Limit (Ya)
0%
Upper Limit (Ye)
100%
Tight Shutoff
NO
Full Open
NO
Brake Time
0.25 seconds
Upper Travel Alarm
100%
Lower Travel Alarm
0%
Curve Data
Linear from 0.0% to 100.0%
The 21-point FrE1 curve is set to the following values when
the factory default parameters are loaded (approximate 1:25
equal percentage positioner response curve):
Parameter
Value
SL 0
0.0%
SL 1
0.8%
SL 2
2.1%
SL 3
3.2%
SL 4
4.9%
SL 5
6.5%
SL 6
8.4%
SL 7
10.7%
SL 8
13.2%
SL 9
15.7%
SL 10
18.7%
SL 11
22.6%
SL 12
27.2%
SL 13
33.4%
SL 14
40.0%
SL 15
46.0%
SL 16
53.8%
SL 17
63.2%
SL 18
73.7%
SL 19
86.2%
SL 20
100.0%
The 21-point FrE2 curve is set to the following values when
the factory default parameters are loaded (approximate 1:50
equal percentage positioner response curve):
Parameter
Value
SL 0
0.0%
SL 1
0.3%
SL 2
0.8%
SL 3
1.5%
SL 4
2.6%
SL 5
3.7%
SL 6
5.0%
SL 7
6.6%
SL 8
8.4%
SL 9
10.9%
SL 10
13.5%
SL 11
16.5%
SL 12
20.3%
SL 13
25.0%
SL 14
31.1%
SL 15
36.8%
SL 16
45.4%
SL 17
54.4%
SL 18
67.5%
SL 19
85.0%
SL 20
100.0%
Flow Control
Worcester Actuation Systems