Cross Limit Switches B-COMMAND

Product catalog summary

Introduction
The document provides an overview of cross limit switches developed by B-COMMAND for crane and hoist applications, emphasizing their importance in ensuring safety and reliability in industrial machinery, particularly within the heavy industry sector.

Quality Management
B-COMMAND prioritizes quality and reliability, focusing on safety and technological advancements. The company collaborates with partners to maintain transparency and quality in production, even under challenging conditions.

Product Overview
The cross limit switches, including the Alpha, Beta, and Lambda series, are designed for heavy-duty applications. They are robust, resistant to oil, gas, and temperature variations, and suitable for high-speed cranes with a maximum activation speed of 3 m/s.

Series Alpha
- Features a robust metal housing with ample wiring space.
- Offers 2 or 4 contacts with various switching configurations.
- Provides protection degree IP 65 and is resistant to extreme conditions.
- Complies with Machinery Directive 2006/42/EG, achieving Performance Level d.

Series Beta
- Constructed from fiber-reinforced thermoplastic, offering robustness and improvements.
- Supports 2 x 1NO+1NC or 4 x 1NC contacts.
- Operational temperature range from -40°C to +80°C, with protection up to IP67.

Series Lambda
- Compact and robust with a metal housing.
- Offers up to 4 potential-free switching contacts.
- Provides several switching configurations and protection degree IP 65.

Technical Specifications
- Electrical rating: A600 Q600, suitable for both AC and DC applications.
- Nominal insulating voltage: 690V~.
- Protection degree: IP 65 for Alpha and Lambda, up to IP67 for Beta.
- Operational temperature: Alpha (-20°C to +70°C), Beta (-40°C to +80°C).

Mounting Instructions
- Maintained positions every 90° with a maximum impact speed of 3 m/s.
- Specific instructions for rod lengths and mounting positions are provided to ensure proper installation and safety.

Conclusion
B-COMMAND's cross limit switches are designed to meet the rigorous demands of the crane and hoist industry, offering customizable solutions to enhance safety and operational efficiency.

Product Specifications

Compact ZAMAK metal housing designed for crane and hoist applications.
Features a red marked zero cross bar for easy identification of limit switch position.
Includes zero-position marking with a unique fixing position for bar fastening plate.
Equipped with self-locking screws for enhanced safety.
Two fixation points below the limit switch head ensure secure mounting.
Cover with integrated sealing and non-losable cover fixation screws outside the protection area for stable protection degree.
Contains 2 contacts (1NO+1NC potential-free) with 4 screw connections each, and snap action switches that are self-cleaning.
Offers comfortable space inside the housing for cable connections and a separate ground connection.
Flexible cabling facilitated by three possible cable entries, with cable entry M20x1.5 including thread for easy cable entry.

Optional Features

Wiring with standard cable in requested lengths.
Mounting and internal pre-wiring of connectors.

Technical Specifications

CE Marking and compliance with various EU regulations and standards including 2011/65/EU, 2015/863/EU, 2014/35/EU, 2006/42/CE, EG1907/2006 (REACH).
Operational temperature range: -20°C to +70°C; storage temperature range: -40°C to +70°C.
Insulation class: Class I according to IEC 536 / DIN EN 61140 VDE 0140-1.
Protection degree: IP 65 according to IEC 529, DIN EN 60529 VDE 0470-1.
Material enclosure: ZAMAK die-cast enclosure.
Maximum activation speed: 3 m/s.
Material rods: Aluminium, length 200mm (optional length 300mm).
Reliability prediction according to DIN EN ISO13849-1 (B10d): 2x10⁶ activations (LAM006), 4x10⁶ activations (LAM001, LAM002).
Performance Level: PL d (LAM001, LAM002), PL c (LAM006).

Technical Characteristics of Contacts

Approvals: CE, CSA, UL, IMQ, UTE, VDE, ASE.
Switches: 1NO+1NC potential free contacts, Snap Action, Silver alloy, self-cleaning.
Nominal operation voltage: 250V~.
Nominal insulating voltage: 250V~.
Thermal rated current: 17.5A.
Nominal current: 5A during 250V~.
Mechanical lifetime: 10 million operations.
Cable diameter: 2x1.5 mm²; 1x2.5 mm².
Connection: Screw terminals.

Mounting Instructions

Maintained positions every 90°.
Average angle for tripping: 48°.
Maximum impact speed: 3 m/s.
Max. operation frequency: 3600 operations/hour.
Attention: Failure to follow these technical specifications will jeopardize the functioning and safety of the system.

Switching Behavior Cross Limit Switch Series Lambda

Various item codes (LAM001 to LAM007) with different contact configurations and maintained positions.

Electrical Specifications

Current nominal rating: 5A at 250V~.
Current thermal rating: 17.5A at 250V~.
Max rating: 16A at 250V~, 16A at 24V DC, 0.6A at 250V DC.

Catalog excerpts

B-CDMMAND PREMIUM ENGINEERING CROSS LIMIT SWITCHES ALPHA BETA LAMBDA

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PREMIUM CROSS LIMIT SWITCH FOR CRANES AND HOISTS The conveyor- and hoisting technique has to deal with uncountable requirements and regulations for both - operator and machinery. Operator and manufacturer of cranes put an enormous focus on permanent safety and reliability of machinery under all environmental conditions. Since many years B-COMMAND is active in the branch of conveyor and hoisting technique as a supplier of solutions for control- and safety technology. The requirements on our products differ widely - from heavy industry applications on an overhead crane up to accurate positioning...

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CROSS LIMIT SWITCH Series Alpha The large ZAMAK die-cast housing of the cross limit switch Alpha offers large space inside for comfortable wiring. Inside 2 or 4 contacts can be mounted, depending on switching configuration. All NC contacts are positive opening, slow action type which can be used for all safety applications. The cover is equipped with non-losable screws and on the inside of the cover the switching and connection diagram is placed for easy assembling. The cross limit switch Alpha is manufactured in different switching configurations. All materials are resistant against oil, gas...

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Series Beta With these contact configurations we can offer following standard switching configurations: Inside we are able to mount 2 x 1NO+1NC contacts or 4 x 1NC contacts. All NC contacts are positive opening, slow action type which can be used for all safety applications. CROSS LIMIT SWITCH The new designed cross limit switch Beta is based on long-term experience in the crane and hoist market. Beside our two metal housing limit switches series Alpha and Lambda we decided to create series Beta, which is made of fiber-reinforced thermoplastic material and offers the same robustness and in addition...

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• Temperature • Insulation class • Protection degree • Cable-entries • Material enclosure • Max. activation speed • Material rods CE 2011/65/EU, 2015/863/EU, 2014/35/EU, 2006/42/CE, EG1907/2006 (REACH) DIN EN 60204-1, DIN EN60947-1, DIN EN 60947-5-1, DIN EN 60529 operational: -40°C ... +80°C storage: -40°C ... +80°C Class II acc. to IEC 536 / DIN EN 61140 VDE 0140-1 IP 66 (IP67 with cable gland) acc. to IEC 529, DIN EN 60529 VDE 0470-1 3 x M20x1,5 Reinforced thermoplastic 3 m/s Aluminum, length 200mm (optional length 300mm) Contact open TECHNICAL CHARACTERISTICS OF CONTACTS • Approvals • Switches...

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CROSS LIMIT SWITCH Series Lambda Cross limit switches series Lambda stand for robustness and compactness. The compact housing is made of extremely resistant ZAMAK die-cast material and offers space for up to 4 potential-free switching contacts. The cross limit switches Lambda are available with overall 7 different switching configurations. • eside the basic stop-function of trolley movement B for each direction by using 2 contacts, we are also able to realize a slow-down and stop-function by using 4 contacts which is used for overall crane movement. The small and compact housing is especially...

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TECHNICAL SPECIFICATIONS SWITCHING BEHAVIOR CROSS LIMIT SWITCH SERIES LAMBDA Marking Harm. rules Temperature Insulation class Protection degree Cable-entries Material enclosure Max. activation speed Material rods Reliability-prediction acc. to DIN EN ISO13849-1 (B10d) Performance Level CE 2011/65/EU, 2015/863/EU, 2014/35/EU, 2006/42/CE, EG1907/2006 (REACH) DIN EN 60204-1, DIN EN60947-1, DIN EN 60947-5-1, DIN EN 60529 operational: -20°C ... +70°C storage: -40°C ... +70°C Class I acc. to IEC 536 / DIN EN 61140 VDE 0140-1 IP 65 acc. to IEC 529, DIN EN 60529 VDE 0470-1 3 x M20x1,5 ZAMAK die-cast...

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