Setting The Open Limit Switch (Lso); Setting Mechanical Stops; Setting The Closed End Stop; Setting The Open End Stop - AUMA SG 05.1 Operation Instructions Manual

NOTE: Distinct "clicks" will be heard and felt while turning the slotted shaft. When the pointer
points toward the switch tripped indicator, no additional clicks should be felt or heard. If
additional clicks are heard or felt, the setting instructions (above) must be repeated.
• The limit switch is now properly set. Release the slotted shaft (to re-engage the counter gearing)
by removing the screwdriver blade. Ensure that the shaft returns to the previous upright position.

Setting The Open Limit Switch (LSO)

To set limit switch LSO, refer to Figure 2, and complete the following setting instructions:
CAUTION: DISCONNECT ELECTRICAL POWER TO THE ACTUATOR BEFORE PROCEEDING.
• Disengage and rotate the handwheel counter-clockwise, until resistance from the mechanical stop
is felt, and back-off (clockwise) five (5) full turns.
NOTE: The white side of the cover plate provides adjustment for the open-counter-clockwise
(CCW) limit switch LSO.
• Repeat the setting procedure as described for the closed position using Spindle D, Pointer E and
Point F.

9. SETTING MECHANICAL STOPS

Setting the Closed End Stop

• Loosen the retainer plate bolts (03) at the stop housing, at least two (2) full turns only if stop is to
be reset (refer to Figure 1).
NOTE: Do not rotate the handwheel from the closed position, or otherwise disturb the LSC setting.
• With LSC set, and/or the valve seated, rotate the stop housing clockwise, until resistance is felt,
and back-off (counter-clockwise) 1/8 turn (refer to Figure 1).
• Retighten the retainer plate bolts.

Setting the Open End Stop

CAUTION: OPEN END STOP ADJUSTMENT IS NOT REQUIRED IF VALVE STROKE IS 90°.
THE OPEN END STOP IS FACTORY SET, AND SHOULD NOT NEED ADJUSTMENT.
AUMA SG Actuators may be set for 80° to 110° of rotation, by repositioning the open end stop.
To adjust the open end stop, refer to Figure 1, and complete the following instructions:
• Rotate the handwheel to locate the valve in a mid-position.
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