Base rotary limit switch
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Base rotary limit switch
The rotary limit switch is used to control the movement of industrial equipment. It operates as an auxiliary controller of an electrical motor through a power interface, such as a contactor or PLC. Its shaft is connected to the motor, and after a set number of revolutions the cams operate the switches, thus starting the predetermined movements.
Features
A worm gear and a helical tooth gear combined with one or more pairs of straight tooth gears are used for transmission of movement from the input shaft to the output shaft. Revolution ratios ranging from 1:15 to 1:1500 are achieved by combining different gears between the input shaft and the output shaft, which are connected to the cams operating the switches. Each cam can be set with great accuracy thanks to the adjusting screws. Overall dimensions are suitable for assembly in small spaces. The auxiliary switches have normally open contacts.
Options
Base switch can be equipped with a cam set consisting of max. 4 switches. It is available with direct control for operating directly on the motor. The limit switch can be fitted with a flange for direct coupling to the motor. Different labels and colours are also available.
Materials
Transmission and gear driving shaft are made of stainless steel to prevent oxidation and wear. Gears and driving bushings are made of self-lubricating technopolymer, suitably chosen to minimize wear and maintain accuracy of the couplings over time. Sintered bronze bushings are moulded into the limit switch base to optimize the shaft rotation and prevent rubbing with plastic material. Parts and components are wear resistant and protect the equipment against moisture and dust.
Standards - Labelling - Certification
- Conformity to EU Directives:
2006/95/CE: Low Voltage Directive
2006/42/CE: Machinery Directive
- Conformity to standards:
EN 60204-1: Safety of machinery - Electrical equipment of machines
EN 60204-32: Safety of machinery - Electrical equipment of machines - Requirements for hoisting machines
EN 60947-1: Low-voltage switchgear and controlgear
EN 60947-5-1: Low-voltage switchgear and controlgear - Control circuit devices and switching elements - Electromechanical control circuit devices
EN 60529: Degrees of protection provided by enclosures
- Labelling and certification: CE
Basic technical specifications
- Storage ambient temperature: -40°C/+80°C
- Operational ambient temperature: -40°C/+80°C
- Protection degree: IP 42, IP 65 or IP 66 / IP 67 / IP 69K (depending on configuration)
- Insulation category: Class II
- Maximum rotation speed: 800 rpm
- Cable entry: M16 cable clamp
- Labelling and certification:
IP 42 or IP 65 - CE
IP 66 / IP 67 / IP 69K - CE (U, c under consideration)
Technical specifications of microswitches
- Utilization category: AC 15 / 3 A / 250 V
- Rated thermal current: 10 A
- Rated insulation voltage: 300 V
- Service life: 1,000,000 operations
- Connections: Faston taps (6.3 mm) or screw-type terminals
- Wires: 1x2.5 mm2, 2x1.5 mm2
- Labelling and certification: CE U (c under consideration)
PRSL0003XX snap-action switch has 1NO+1NC change-over contacts.
PRSL0011XX snap-action switch has 1NO+1NC change-over contacts.
All NC contacts are of the normally open type.
The rotary limit switch is used to control the movement of industrial equipment. It operates as an auxiliary controller of an electrical motor through a power interface, such as a contactor or PLC. Its shaft is connected to the motor, and after a set number of revolutions the cams operate the switches, thus starting the predetermined movements.
Features
A worm gear and a helical tooth gear combined with one or more pairs of straight tooth gears are used for transmission of movement from the input shaft to the output shaft. Revolution ratios ranging from 1:15 to 1:1500 are achieved by combining different gears between the input shaft and the output shaft, which are connected to the cams operating the switches. Each cam can be set with great accuracy thanks to the adjusting screws. Overall dimensions are suitable for assembly in small spaces. The auxiliary switches have normally open contacts.
Options
Base switch can be equipped with a cam set consisting of max. 4 switches. It is available with direct control for operating directly on the motor. The limit switch can be fitted with a flange for direct coupling to the motor. Different labels and colours are also available.
Materials
Transmission and gear driving shaft are made of stainless steel to prevent oxidation and wear. Gears and driving bushings are made of self-lubricating technopolymer, suitably chosen to minimize wear and maintain accuracy of the couplings over time. Sintered bronze bushings are moulded into the limit switch base to optimize the shaft rotation and prevent rubbing with plastic material. Parts and components are wear resistant and protect the equipment against moisture and dust.
Standards - Labelling - Certification
- Conformity to EU Directives:
2006/95/CE: Low Voltage Directive
2006/42/CE: Machinery Directive
- Conformity to standards:
EN 60204-1: Safety of machinery - Electrical equipment of machines
EN 60204-32: Safety of machinery - Electrical equipment of machines - Requirements for hoisting machines
EN 60947-1: Low-voltage switchgear and controlgear
EN 60947-5-1: Low-voltage switchgear and controlgear - Control circuit devices and switching elements - Electromechanical control circuit devices
EN 60529: Degrees of protection provided by enclosures
- Labelling and certification: CE
Basic technical specifications
- Storage ambient temperature: -40°C/+80°C
- Operational ambient temperature: -40°C/+80°C
- Protection degree: IP 42, IP 65 or IP 66 / IP 67 / IP 69K (depending on configuration)
- Insulation category: Class II
- Maximum rotation speed: 800 rpm
- Cable entry: M16 cable clamp
- Labelling and certification:
IP 42 or IP 65 - CE
IP 66 / IP 67 / IP 69K - CE (U, c under consideration)
Technical specifications of microswitches
- Utilization category: AC 15 / 3 A / 250 V
- Rated thermal current: 10 A
- Rated insulation voltage: 300 V
- Service life: 1,000,000 operations
- Connections: Faston taps (6.3 mm) or screw-type terminals
- Wires: 1x2.5 mm2, 2x1.5 mm2
- Labelling and certification: CE U (c under consideration)
PRSL0003XX snap-action switch has 1NO+1NC change-over contacts.
PRSL0011XX snap-action switch has 1NO+1NC change-over contacts.
All NC contacts are of the normally open type.
