D4NL-2FFA-BS OMRON Safety door switch

OMRON D4NL-2FFA-BS Safety door switch

Product Description:

The OMRON D4NL-2FFA-BS is a heavy-duty safety limit switch designed for critical safety applications in industrial automation and machinery. This robust switch provides reliable operation in harsh environments where mechanical durability and safety performance are paramount. The switch features a positive break mechanism that ensures safe contact operation even in the event of spring failure or component malfunction, meeting stringent safety standards for emergency stop applications and safety door monitoring.

Constructed with a durable metal housing and high-grade mechanical components, this safety limit switch is built to withstand demanding industrial conditions including exposure to oils, chemicals, and mechanical impact. The switch incorporates a dual-channel contact configuration with forced-guided contacts that provide direct opening action, ensuring compliance with safety category requirements for machine protection systems. The bright orange actuator provides high visibility and immediate recognition as a safety device.

The D4NL-2FFA-BS is particularly suitable for applications in press brakes, robotic work cells, assembly lines, and material handling equipment where reliable safety switching is essential for operator protection. The switch's mechanical durability and electrical reliability make it ideal for high-cycle applications requiring millions of operations without performance degradation. The integrated diagnostic capabilities and clear status indicators facilitate quick inspection and maintenance.

Technical Specifications:

General Specifications: The D4NL-2FFA-BS is a safety limit switch with positive break mechanism. The switch meets ISO 14119 requirements for safety interlock devices. The contact configuration features 2NC (normally closed) contacts with forced-guided mechanism. The electrical rating is 10A at 250V AC or 24V DC. The mechanical life expectancy exceeds 10 million operations minimum.

Electrical Characteristics: The rated insulation voltage is 250V AC. The rated impulse withstand voltage is 4kV. The contact resistance is 50mΩ maximum initially. The dielectric strength is 2000V AC for 1 minute between live parts and ground. The insulation resistance is 100MΩ minimum at 500V DC. The maximum operating current is 10A AC/DC. The minimum switching capacity is 10mA at 5V DC.

Mechanical Specifications: The actuator type is a side rotary lever with roller. The operating force is 3.5N maximum. The release force is 1.5N minimum. The pretravel is 25° minimum and overtravel is 45° maximum. The total travel is 70° maximum. The operating temperature is -30°C to +85°C (with no icing). The housing protection rating is IP67 per IEC 60529 when properly installed.

Safety Performance: The switch meets Performance Level e (PLe) according to ISO 13849-1 and Safety Integrity Level 3 (SIL 3) according to IEC 61508. The positive break mechanism ensures direct opening action with contact separation of at least 0.5mm. The forced-guided contacts prevent contact welding and ensure safe operation. The diagnostic coverage exceeds 99% for detected failures.

Construction Details: The housing is constructed of die-cast zinc with stainless steel components. The actuator is made of reinforced polyamide with stainless steel roller. The contact blocks are made of heat-resistant thermosetting plastic. All external fasteners are stainless steel to prevent corrosion. The cable entry is through M20 x 1.5 conduit connections with IP67 sealing.

Connection Technology: The electrical connections are made through screw terminals accepting wires from 0.5mm² to 2.5mm². The recommended tightening torque is 0.8N·m. The terminal arrangement allows for separate conduit entries for input and output wiring. The connection compartment is designed for easy access and maintenance.

Environmental Ratings: The switch operates in temperatures from -30°C to +85°C. The storage temperature range is -40°C to +85°C. The humidity resistance is 5% to 95% relative humidity non-condensing. The vibration resistance is 10-55Hz with 1.5mm amplitude. The shock resistance is 1000m/s² in three axes. The switch is resistant to oils, coolants, and industrial chemicals.

Certifications and Standards: The switch carries CE marking and complies with all applicable European directives. It is UL listed and cULus approved. The device meets IEC 60947-5-1 standards for control circuit devices. The safety performance is certified by TÜV Rheinland for SIL 3 and PLe applications. The switch is compliant with ISO 13849-1 and ISO 14119 requirements.

Installation Requirements: The switch requires mounting via two M4 mounting holes with recommended torque of 1.2N·m. The actuator must be properly aligned with the operating cam or mechanism. The safety contacts must be wired in accordance with safety circuit design principles. The switch position should be checked periodically for proper operation.

Diagnostic Features: The switch provides mechanical status indication through actuator position. The forced-guided contacts allow for external monitoring of contact status. The switch design facilitates regular functional testing without disassembly. The bright orange actuator provides visual indication of switch operation.

Application Guidelines: The switch is designed for use in safety circuits requiring Category 4 according to EN 954-1 or PL e according to ISO 13849-1. The switch should be used in conjunction with a safety relay or safety controller. Regular functional testing is recommended to ensure continued safety performance. The operating mechanism should be designed to prevent defeat or bypass of the safety function.

Maintenance Requirements: The switch requires periodic inspection for mechanical wear and proper operation. The contacts should be checked for signs of arcing or damage. The actuator mechanism should be verified for smooth operation. All mounting fasteners should be checked for proper tightness.

Disclaimer: This information is provided for reference purposes only. For complete specifications and installation guidelines, consult the official OMRON documentation. Installation and operation must be performed by qualified personnel following all safety regulations and local electrical codes. Specifications are subject to change without notice.

FAQ & Contact:

Q: Are you a trading company or a manufacturer?

A: We are a trading company.

Q: What is your lead time?

A: It usually takes one to three days if we have it in stock. If the goods are not in stock, you need to negotiate.

Q: Does your company provide samples? Is it free or do you charge extra?

A: It depends on the goods you need and the quantity you order.

Q: What are your terms of payment?

A: 100%  T/T before shipping. If the quantity is large, we can negotiate.

Our Company:

As a professional PLc DcS spare parts supplier, Online Union Trade Co., Ltd has been in the automationindustry for nearly 13 years. Our products are including Allen Bradley, Bently Nevada, ABB, GE Fanuc,Honeywell, Triconex, Foxboro, Bachmann, ICS Triplex, Hima, Prosoft,PRO-FACE,FESTO,LENZE,KEYENCE...etc

Our Services:

1,All our products are new and original, and of good quality.

2,Our prices are very competitive.

3,We have a large quantity in stock, so we could help the customers to get the components which are difficult to get.

4,All inquiries will be valued and will reply in 24

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