RLS-51 ROTARY CAM LIMIT SWITCH

RLS-51 Rotary Cam Limit Switch Overview

Screw Jack products are used in a wide spectrum of industries for lifting, positioning and materials handling applications. All of which require a level of motion control. Screw Jack RLS-51 series geared cam limit switches are ideal for use as:

• End of travel limit switches to stop or reverse a screw jack or an actuator system.
• Mid travel signal providers to allow integration of other process operations.

And allow integration of other feedback devices such as potentiometers and encoders inside their compact housing.

RLS-51 Features and Options

The RLS-51 geared cam limit switches are universal mechanical switching devices that have been designed for use in conjunction with cam discs on a specific angle of rotation for the indication of a large number of shaft revolutions. These cam discs serve to operate mechanical contacts.

Design features include:

• Useable revolutions from 4 to 16000.
• 2 to 8 position limit switches.
• Mounting options for B14 face, B5 flange and B3 foot mounted.
• Available in three voltages 250 VAC, 24 VDC and 80 VDC.
• Modular design to allow a wide variety of options.
• Operating temperature :- 40°C to +80°C
• Low Friction Planetary Gearing with irreversable, self-locking worm adjustment of the cam discs.
• Fixed Cam Adjustment in the housing. The adjusting worms of the cam discs are arranged so that they can be accessed from the same direction as the contact connections for optimal accessibility in confined conditions. Adjustment is possible during operation. The simplicity and accuracy of the cam adjustment is unsurpassed.
• Block Adjustment of all switching contacts jointly is made possible a single adjusting worm (black) without the switching points of individual switching contacts being altered with respect to each other.
• Large Cam Disc Diameter for good adjustability and high switching point repeat accuracy.
• Reinforced Polycarbonate Housing as standard with IP66 protection and a wide operating temperature range.
• Modular Design allows adaptation to suit individual requirements via intermediate pieces.
• Maintenance Free gearbox components.

Options

• Position indicating plate for block adjustment.
• Potentiometer feedback drives (2 available) to suit single and multi-turn potentiometers.
• Pulse transmitter with 50 pulses per revolution.
• Anti-condensation heater to prevent condensation and excessively low temperatures in switches.
• Motor driven contact block adjuster.
• Mounting for encoders (incremental and absolute).
• Extended drive shaft for feedback devices.
• Aluminium housing for harsh environments and fitment of large and heavy encoders, IP 65 enclosure.
• Cam discs with a 40° cam angle can be provided at no extra cost. Standard is 15° cam angle. Other angles can be manufactured at extra cost on request. Note different cam angles alter the number of useable revolutions from the standard. The 40° cam has less useable revolutions than a 15° cam, consult Screw Jack.
• Stage Technology Tested Unit can be provided to VBG 70 with test certificates. A 40° angle cam disc is used for this application.