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Logix
®
520MD+ and 510+ Digital Positioners FCD LGENIM0105-15-AQ – 05/16
16
5.2 Mounting to FlowTop Linear Valves
To mount a Logix 500+ positioner to a FlowTop linear actuator and
valve (with direct mounting / integrated tubing), refer to Figure 7 and
proceed as outlined below.
NOTE:
Because the integral mounting uses the alternate
pneumatic port, the positioner must have a poppet style, single
acting relay. This is indicated in the model code with a “1” in the
highlighted location:
521MD+14-W1ED1F0-GM2-1103
1. Remove the FlowTop port plug screw. Plug port B.
2. Ensure positioner O-ring surface is clean. Then install the O-ring,
and FlowTop mounting block using the positioner screws.
3. Attach the follower arm to the feedback shaft using the follower
arm nut.
Refer to Figure 8: FlowTop Mounting.
4. Assemble the take-off pin to the take-off plate and mount the
take-off plate to the valve stem using the two screws. Adjust the
follower pin to match the correct location as indicated on the
follower arm’s embossed scale.
5. Place the actuator O-ring.
6. Place the positioner on the actuator, ensuring the take-off pin is
inside the follower arm slot. Adjust the follower arm as needed.
NOTE:
The feedback shaft has a clutch mechanism that allows
for over-rotation of the shaft for easy adjustments.
7. Use the actuator screws to secure the positioner in place.
8. Connect regulated air supply to appropriate port in manifold. See
section 6 TUBING.
9. Connect the power to the 4-20 mA terminals. See section 7
ELECTRICAL CONNECTIONS.
10. Remove main cover and locate DIP switches and QUICK-CAL/
ACCEPT button.
Figure 7: FlowTop Mounting Bracket
Positioner Screws
FlowTop Mounting Bracket
Positioner O-Ring
Spacer
FlowTop Port
Port B
Follower Arm
Feedback Shaft
Follower Arm Nut