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Rotary limit switch Top

Rotary limit switch Top

Top is a rotary limit switch used to control the movement of industrial machinery. It operates as an auxiliary controller of electrical motors through a power interface, such as a contactor or PLC. Suitable for heavy duty, its shaft is connected to the motor and, after a set number of revolutions, the cams operate the switches, thus starting the predetermined movement. A worm gear and a helical toothed gear combined with one or more pairs of straight toothed gears are used for the transmission of the movement from the input shaft to the output shaft.
Top is used on wind turbines to control the position of the nacelle or the pitch angle of the blades. The motor that controls the rotation of a wind turbine on the yaw axis (or of the blade around its longitudinal axis) transfers the movement to the limit switch. A rotary encoder reads the rotation of the shaft, and its pulses are sent to a PLC which controls the position of the nacelle or of the blade. The movement of the shaft is also transferred, through a gearmotor, to a series of cam switches: the appropriate setting of the actuating point of the cams can signal up to four critical positions of the movement of the nacelle or of the blade.

Features

Revolution ratios, ranging from 1:1 to 1:9400, result from the use of different combinations of gear wheels between the input shaft and the output shaft, which is connected to the cams operating the switches. Each output of the limit switch can be set with a different revolution ratio to allow for a diversified control of the machinery to meet special requirements. Each cam can be set with great accuracy thanks to the cam adjusting screws.
The auxiliary switches are of a positive opening type, thus suitable for safety functions.

Options

Top can be fitted with different combinations of actuators and motion detectors: sets of cams and microswitches (max. 12), potentiometers or encoders (max. 3), absolute encoder Yankee 1 for set of cams and microswitches (max. 3). It is possible to fit together sets of cams and microswitches, potentiometers and encoder, thus creating a device featuring redundancy and diversity. The limit switch is available with a flange for direct coupling to the motor.
Different labels and colors are also available.

Materials

Top features transmission and gear driving shafts made of stainless steel AISI 303, worm gear transmission shaft rotating on ball bearings, self-lubricating techno-polymer gears and driving bushes. The base and the cover of the rotary limit switch are made of electrostatic varnished diecast aluminum.
Materials and components are wear and saline fog resistant, and protect the equipment against water and dust.

  • Conformity to EU Directives: 2006/95/CE, 2006/42/CE
  • Conformity to standards: EN 60204-1, EN 60204-32, EN 60947-1, EN 60947-5-1, EN 6052
  • Saline fog resistant
  • Storage temperature: -40°C/+80°C
  • Operating temperature: -40°C/+80°C
  • Degree of protection: IP 66 / IP 67 / IP69K
  • Insulation category: Class I
  • Maximum rotation speed: 800 rpm
  • Cable entry: cable clamp M20
  • Working position: any
  • Certification: CE, SIL 1

Switches

  • Typ: PRSL0110XX - 1NC + 1NO, 2 snap contacts, 4 terminals
  • Typ: PRSL0111XX - 1NC, slow
  • Utilisation category: AC 15
  • Rated operational current: 3 A
  • Rated operational voltage: 250 V AC
  • Rated thermal current: 10 A
  • Rated insulation voltage: 300 V AC
  • Mechanical life: 1 000 000 operations
  • Connections: screw-type terminals, EN50013
  • Wires: 1×2,5mm², 2×1,5 mm²
  • Tightening torque: 0,5Nm
  • Certification: CE, for more see PDF
  • Typ: PRSL0100XX, 1 NO + 1 NC, 2 change over snap contacts, 3 terminals
  • Utilisation category: AC15, DC13
  • Rated operational current: 2 A/125 V AC, 1 A/250 V AC, 0,5 A/60 V DC
  • Rated operational voltage: 125 V AC, 250 V AC, 60 V DC
  • Rated thermal current: 6 A
  • Rated insulation voltage: 250 V AC
  • Mechanical life: 1 500 000 operations
  • Connections: screw-type terminals, EN50013
  • Wires: 0,25 - 1,5 mm²
  • Tightening torque: 0,5 - 0,6 Nm
  • Certification: CE, for more see PDF

Absolut Encoder Yankee 1

  • Sensor Yankee 1 is fitted from top to the block of cams. Designed for rotary limit switches Fox, Oscar und Top.
  • 3 output types: voltage 0÷10 VDC, current 4÷20 mA, PWM 0÷100 %
  • Resolution: 12 bit
  • Linearity: ±0,5 %
  • Reset: button, wire
  • Connections: screw-type terminals, EN50013
  • Wires: 0,14-1,5 mm²
  • Tightening torque: 0,22 - 0,25 Nm
  • Storage temperature: -40°C/+80°C
  • Operating temperature: -40°C/+80°C
  • Degree of protection: IP 20
  • Maximum rotation speed: 800 rpm
  • Range: 360°
  • Power supply: 12-48 V AC/DC
  • Consumption: 50 mA
  • Certification: CE

More in PDF.

Rotary limit switch Top
Top
Rotary limit switch Top
Top with flange
Rotary limit switch Top
Top with 3 blocks of cams
Rotary limit switch Top
cams, Yankee 1, Encoder
Yankee 1
Yankee 1

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Products in category

Rotary limit switches

Base
Base

Limitex AG
Limitex AG
Fox
Fox
Oscar
Oscar
PF2C
PF2C
GF4C
GF4C

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