Flowserve AF-17 Electronic Positioner - Manual (Page 20)

20 AF-17 Electronic Positioner: Installation, Operation and Maintenance WCAIM2031
5.4.1 Input Reversing – (AF-17-1, AF-17-4, AF-17-10) (mA Input); 120 VAC
Reverse the black and red wires from the positioner board; the red goes to terminal 4 and the black to terminal 3. Change
the feedback potentiometer wires on the board at TB-1 terminals 1 and 3; the purple wire goes to terminal 3 and the green
wire to terminal 1. The positioner will now operate in reverse of the usual manner and the controls “Range” and “Zero” will
also be reversed. The “Range” control should now be used to adjust the closed end of travel and the “Zero” control used to
adjust the open end of travel. Always adjust the “Zero” control first!
NOTE: If the 4-20 mA signal output (if installed) is to be reversed also, then the wires at TB-2 terminals 1 and 3 must
also be reversed. The AF-17 board must be recalibrated after switching the wires at TB-2 and/or TB-1.
5.4.2 Input Reversing – (AF-17-1K, AF-17-13) (Resistance Input); 120 VAC
Make the same changes as in 5.4.1. If the input is from a manual control station and it is desired that the direction for
“Closed” and “Open” also be reversed at the “Command” potentiometer, change additionally the wires from the circuit board
to terminals 10 and 12. Connect the orange wire to terminal 10 and the yellow wire to terminal 12. The operation of
adjustments “Range” and “Zero” will be reversed, as in paragraph 5.4.1. Recalibrate the AF-17 board.
5.4.3 Input Reversing – (AF-17-5V, AF-17-XV) (Direct Voltage Input); 120 VAC
Follow same procedure as paragraph 5.4.1.
5.4.4 Input Reversing, 240 VAC Only
In addition to performing the steps in paragraphs 5.4.1, 5.4.2, or 5.4.3, it is also necessary to swap the two black wires
from limit switch 1 to limit switch 2 and the two red wires from limit switch 2 to limit switch 1.
6.0 TECHNICAL DATA
6.1 AC Input Voltage:
All voltages ........................................................................................... ±10%
Power Consumption (Circuit Board Only).........................................2.5 watts
6.2 Input Circuit Specifications
Maximum Noise Level at Maximum Positions............................Approx. 7mV
Resistance Input
AF-17-1K .........................................................................Nominal 1000 ohms
AF-17-13 ...........................................................................Nominal 135 ohms
Current Input
AF-17-1 ................................................................................ 1 to 5 milliamps
AF-17-4 .............................................................................. 4 to 20 milliamps
AF-17-10............................................................................10 to 50 milliamps
Voltage Input
AF-17-5V........................................................................................0 to 5 VDC
AF-17-XV......................................................................................0 to 10 VDC
Flow Control Division
Worcester Controls