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High - Power

Model CS 501 - Bulletin 108

The CS 501 Rotating Shaft Cam Switch is a
high-capacity, infinitely adjustable limit and programming switch designed for the control, cycling and sequencing of machine operations. Its patented design combines all the functions of an adjustable plate cam, cam follower and snap-action switch in a single readily-mounted unit. Simple external screwdriver adjustments, which can be made while the shaft is either stationary or rotating, set the on and off points of each switch independently, and provide any desired dwell angle from 5º to 355º Switching positions are indicated precisely by high-resolution dials adjacent to the external adjusting screws, permitting even complex control programs to be set up or changed solely by means of the dial indications.
The CS 501 Cam Switch is available in both single or multi-stack units, in end and side-mounting configurations, and with a wide choice of switch types, to meet specific requirements for control and programming of machines of all types. All models can be supplied with switch covers for use in installations where switch wiring must be enclosed.

Simplified schematic shows Precision Mechanisms’ patented* design. The two crown gears are superimposed discs with gear teeth at the upturned outer edges for angular adjustment. Each has a slot, as shown, with the degree of overlap of the slots adjustable. The pivoted wheel rides on the flat surface of the inner crown gear and moves downward over the common slotted region. Through the lever arrangements, this downward motion actuates the limit switch. Calibrated dials attached to each crown gear indicate on and off position through a window.
*Pat. No. 3,060,286. Other Patents Pending
(click here for specifications)

External Switching Angle Adjustment:
Switch on and off points can be quickly adjusted by means of external screws while the machine is stationary or in motion. Dwell angles as small as 5º and as great as 355º can be set for either closed or open circuits depending on choice of switch terminals. Locking screws assure that switch settings will be maintained.

Accurate Switch Angle Indicator:
Calibrated dials, marked every 2º and readable to better than 1º, show switch on and off positions. Dials are color-coded gold and silver to match the corresponding adjustment screws, permitting fast, non-ambiguous setting.

Easy Switch Replacement:
Any switch in a single or multistack assembly can be quickly replaced without disturbing the installation. There is no lengthy downtime or need for spare assemblies.

Pneumatic Switching:
Switch mounting arrangements have been designed to accept air pilot valves in place of the electrical switches, without modification of the cam switch assembly, for direct programming of pneumatically controlled devices. Assemblies may be ordered with air pilot valves or a combination of valves and switches.

Configurations For All Installation Requirements:

The CS 501 Rotating Cam Shaft Switch can be supplied in a choice of end- and side-mounting types, with positioning of adjusting screws, dial windows and switches to suit requirements.
(click here for specifications)
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