Flowserve AF-17 Electronic Positioner - Manual (Page 12)

12 AF-17 Electronic Positioner: Installation, Operation and Maintenance WCAIM2031
3.3.2 For 120/240 VAC 25 and 30 Size Electric Actuators
See Figure 4.
A. Assemble circuit board to bracket as shown.
B. Place four of the five rubber grommets onto the insulating board. Put nylon washers on the self-tapping screws and
place screws through the circuit board and insulating board. Start screws into the bracket. Use a nylon washer and a
rubber grommet on the self-tapping screw, securing the lower left corner of circuit board.
C. If no insulating board is used, place a rubber grommet between the board and the bracket. Tighten all screws such that
the grommets are about half compressed.
D. Use two screws to fasten circuit board bracket to the motor mounting plate, component side of the board is facing out.
E. The circuit board is wired to the terminal strip as shown in Part 3.4.
Limit Switch Locations (SW-3 and SW-4 are optional)
NOTE: Standard wiring for switches and capacitor as shown in Figure 4 is the same for 10-23 75 actuators and is for
120 VAC Positioner only. For 240 VAC Positioner, see paragraph 3.4.4.
3.3.3 Installation of Optional 4-20 Position Output (if used and not factory installed)
A. The output of the position output option is suited for a 4-20 mA DC meter with 0-100% scale (such as General Electric
type GE185), which is not part of the package. If properly calibrated, it indicates actuator shaft position from closed (0°,
0%) to open (90°, 100%).
A dual potentiometer has to be used with the AF-17 to achieve the 4-20 mA output. Each potentiometer can serve only
one function. See Part 3.2 for potentiometer installation and wiring procedures.
Flow Control Division
Worcester Controls
Figure 4
25-30 Size 75 Actuators
Item Description
1 Circuit Board Subassembly
2 Insulating Board
3 Circuit Board Bracket
4 Mounting Screw (Bracket)
5 Grommet – Rubber
6 Washer – Nylon
7 Mounting Screw
(Circuit Board)