GF4C Rotary limit switches

Rotary cam limit switch for controlling the movement of industrial machines
Catalog
Request form
Instructions
Certificates

Rotary cam limit switch used to control and measure the movement of industrial machines or the position of the nacelle or pitch angle of wind turbines.

Features

  • It consists of a gear motor that transfers movement to the cams and the other movement detection devices through a primary input reduction stage (worm gear and helical toothed gear) and one or more secondary output stages.
  • Accurate adjustment of cams by means of screws.
  • Positive opening NC contacts for safety functions.
  • Mechanical life of switches: up to 1 million operations.
  • IP protection degree: GF4C is classified IP 65.
  • Extreme temperature resistance: -25°C to +70°C.
  • It features transmission and gear driving shafts made of stainless steel, self-lubricating technopolymer gears and driving bushes and sintered bronze bushes moulded into the base of the limit switch to prevent rubbing against plastic material.
  • All materials and components used are wear resistant and guarantee protection of the unit against water and dust.

Options

  • Revolution ratios from 1:1 to 1:969, achieved by combining different secondary output stages.
  • Each of the two outputs can be set to a different revolution ratio to enable diversified control of the machine when special requirements need to be met.
  • Snap actions switches with 1NO+1NC contacts or slow action switches with 1NC contact.
  • It can be equipped with 2 cam sets (with up to 7 switches), potentiometers and encoders (alone or on top of cam sets with up to 2 switches) and Yankee absolute encoders (on top of cam sets with up to 2 switches).
  • Available with flanges, pinion gears and couplings.
  • Available with direct control switches to enable direct action on the motor.

Certifications

  • CE marking and cULus* marking.

* Not available on all versions.

GENERAL TECHNICAL SPECIFICATIONS

Ambient temperature Storage -40°C/+70°C
Operational -25°C/+70°C
IP protection degree IP 65
Insulation category Class II
Cable entry Cable gland M20
Shafts Stainless steel AISI 303

TECHNICAL SPECIFICATIONS OF THE SWITCHES FOR AUXILIARY CONTROL

Utilisation category AC 15
Rated operational voltage 250 Vac
Rated operational current 3 A
Rated thermal current 10 A
Rated insulation voltage 300 Vac
Mechanical life 1x106 operations
Connections Screw-type terminals

Applications