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Adjusting the actuator CW position
Serious Damage to the actuator will result if the motor is allowed to drive the gear train into the
mechanical stop!! Remove power from this device BEFORE making any travel adjustments.
This actuator has been factory calibrated to operate between 0 degrees and 90 degrees.
Most quarter-turn products will not require recalibration of these settings. Proceed ONLY if
adjustments are required.
CW Mechanical Stop
Cam 1
CW Mechanical Stop
Potentiometer Gear Engagement
During the setting of the CW stop position, make sure that the potentiometer pinion
gear and the camshaft sector gear do not drive past the point of engagement. If
the sector gear does not have at least 2 full teeth contacting the potentiometer
pinion gear, contact your distributor for mechanical recalibration instructions.
The mechanical stop screw limits handwheel operation ONLY and is NOT to be
used as an electrical travel limiting device.
Loosen Mechanical Stop
1. BEFORE power is applied, use a 17mm wrench and a 5mm hex key to loosen
the RIGHT SIDE mechanical stop. This is the CW stop limit adjustment. Turn
the stop screw 5-6 turns CCW to allow electrical cam stop adjustment without
running into the mechanical stop screw.
2. Use the manual hand wheel to position the actuator to your required CW
position. This must be within +/- 3 degrees of the factory setting.
Adjust Cam 1
3. The lower cam is Cam 1, the CW end-of-travel adjustment. Once the actuator
is at its required CW position, with POWER OFF, use a 2.5mm hex key to free
up the cam set screw. Once it is free, rotate the hex key to the RIGHT 10-15
degrees to reset the switch roller arm. Then snug the set screw up against the
camshaft (CW) until slight pressure is felt. Then SLOWLY rotate the hex key
pushing the cam to the LEFT until you hear the "click" on the bottom switch
indicating that correct adjustment has been achieved. Tighten the set screw.
4. Apply power to the actuator and drive CCW at least 15-20 degrees. Then
drive the actuator CW until the cam stops the electrical travel. Check to be
sure this is the correct CW position you require. Repeat step 3 if further
adjustment is needed.
Tighten Mechanical Stop
5. While holding the 17mm wrench on the RIGHT SIDE jam nut to prevent the
jam nut from locking, turn the 5mm hex key CW until the end of the stop screw
bottoms out against the internal stop boss. Then turn the hex key ONE FULL
TURN CCW before locking that adjustment with the jam nut. This procedure
assures that the actuator reaches its end of travel electrically before there is
any interference from the mechanical stop.
6. This completes the CW position calibration.
Notice! After completing this step, you must initiate a recalibration routine
(see AutoCalibration Procedures) in order for the changes to take effect in
the controller.
Page 7 of 14 P2/3 12VDC Proportional Series
COM
NO
LESS
NC
CLOSED
CLOSED
LIMIT
SWITCH
COM
NO
LESS
NC
CW
CW LIMIT SWITCH
COM
FURTHER
CLOSED
NO
NC
COM
FURTHER
CW
NO
NC
CCW LIMIT S
OPE
LIM
SWIT
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