"SKA Series" Rotary Limit Switches

SKA Series Rotary Limit Switch

Features

• Available in two control voltage ratings : 250 or 480, and in three gear ratios.
• Can be used in applications where there is a need to control equipment that rotates and/or reverses.
• Sturdy and compact. Constructed of corrosion-resistant materials, with housing of black anodized aluminium.
• Meets NEMA-4 water tightness requirements.
• Simple to adjust, two stitches one for up/stop and one for down/stop, are activated by the adjustable limit switch nuts which travel laterally when the internal screw is rotated through gear reduction.
• Operating temperature range -20° to + 150°F.
• Lifetime lubricated.
• Can be mounted on right or left extension of actuator worm shaft in any of four quadrants.
• Optional 4-position limit switch available.

Rotary Limit Switch Performance Specifications

Limit Switch Field Installation Dimensions

Worm Shaft Dimensions

Rotary Limit Switch Electrical Wiring Diagram and Setting Instructions

1. CAUTION: Disconnect power before making any adjustment.

2. Check drift before adjusting limits.

3. Remove screw "A" and nut guide keeper "B" to adjust limits.

4. Run actuator unit to desired limit.

5. Rotate appropriate nut until switch clicks, then turn 1/2 turn more.

6. Replace "A" and "B".

7. Run actuator unit to other limit.

8. Repeat steps 2, 4 and 5 to adjust this nut.

9. Slight adjustments may be necessary.