Bimba PCS - Manual (Page 35)

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APPENDIX C
Probe Adjustment
Probe output calibration is normally not required. Every PFCN is calibrated at the
factory for 0 to 10 V DC output fully retracted to fully extended. If readjustment is
necessary in your application, follow the instructions below:
1. Install the PFCN in your application. Remove the rear end cap exposing the
probe and four adjustment screws.
2. Apply 24 VDC power to the probe and monitor the feedback voltage.
Connector pin identification is shown in the illustration below.
3. Position the actuator to full retract at 80 psi. Adjust the output as close to
zero as possible using the coarse adjustment “RET(CS),” and then the fine
adjustment “RET(FN).”
4. Position the actuator to full extend at 80 psi. Adjust the output to 10 V DC
using the coarse adjustment “EXT(CS),” and then the fine adjustment
“EXT(FN).”
Probe Replacement
The PFCN probe is not a wear part and normally will not need replacement. If
replacement is necessary, follow the instructions below:
1. Using an allen wrench, remove the four socket head cap screws on the
rear of the cylinder.
2. Remove the rear cap. Carefully detach the plastic connector that secures
the M8 DIN connector to the probe terminals.
3. Remove the two long screws that secure the probe in the cylinder. Then
pull the probe out of the cylinder.
4. Gently insert the replacement probe into the cylinder, rotating it until its
through holes align with the screw holes in the cylinder. Tighten the
screws, then reattach the end cap.
PFCN Probe Adjustment and Replacement Instructions
GROUND
FEEDBACK OUTPUT
24 VDC INPUT