Single-Phase Motor Speed Adjustment; Optional Equipment; Setting Limit Switch Lsa - AUMA SG 05.1 Operation Instructions Manual

• Turn dial
OPEN while holding the other dial in position until the arrow is in alignment with the
mark.

12. SINGLE-PHASE MOTOR SPEED ADJUSTMENT

The SG single-phase actuator operating time is field-adjustable.
• To access the speed adjustment, remove the cap from the end of the motor housing using the
15/16" (24mm) hex provided.
• Turn adjusting pot counter-clockwise to increase closing time. Clockwise decreases closing time.
Inspect the o-ring on cover and replace if required.
• Apply a light coating of non-acid grease to o-ring and threads on cover.
• Install the cover and tighten.

13. OPTIONAL EQUIPMENT

AUMA SG Actuators equipped with four gear train limit switches, LSA and LSB, may be set for valve
mid-position control signaling.
LSA may be set to trip at a selected valve position as the actuator is operated in the closing (CW)
direction.
LSB may be set to trip at a selected valve position as the actuator is operated in the opening (CCW)
direction.
To set LSA and LSB, refer to Figure 2, and complete the following setting instructions:

Setting Limit Switch LSA

CAUTION: DISCONNECT ELECTRICAL POWER TO THE ACTUATOR BEFORE PROCEEDING.
• Rotate the handwheel to locate the valve in a mid-position.
• Rotate the handwheel clockwise to position the valve at the desired LSA tripping point, and back-
off (counter-clockwise) four (4) full turns.
• Apply the setting instructions as outlined in Section 8 to set limit switch LSA using Spindle G,
Pointer H and Point C.
NOTE: The black side of the cover plate provides adjustment for limit switch LSA.
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