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Specification & Description
| Specification | Description |
|---|---|
| Part Number | D4A-2918N |
| Alternative Part Number | D4A2918N |
| Manufacturer | Omron |
| Category | Limit Switch |
| Family | General-purpose Limit Switch |
| Description | A robust limit switch designed for versatile applications, featuring double-break contacts. |
| Actuator Type | Center neutral operation |
| Contact Form | DPDT (Double Pole, Double Throw) |
| Enclosure Rating | UL Types 3, 4, 4X, 6P, 13; NEMA Types 1, 2, 3, 4, 4X, 5, 6, 6P, 12, 13; IEC 144 IP67 |
| Mechanical Life | 30 million operations for DPDT |
| Ambient Operating Temperature | -40° to 100°C (-40° to 212°F) for side rotary types (except low torque types) |
| Vibration Resistance | Malfunction durability: 10 to 55 Hz, 1.5 mm (0.06 in) double amplitude |
| Shock Resistance | Malfunction durability: 30 G; Mechanical durability: 100 G |
| Operating Characteristics | Various operating forces, pretravel, and overtravel specifications depending on actuator type |
| Commodity Code | 853890 |
| Country of Origin | - |
The Omron D4A-2918N is a robust and versatile limit switch designed to cater to a wide range of industrial applications. This general-purpose limit switch is engineered to provide reliable performance in various environments, ensuring operational efficiency and safety in machinery and equipment control systems.
Constructed with a double-seal head, a full-sealing cover, and other features, the D4A-2918N offers superior sealing capabilities, meeting UL NEMA 3, 4, 4X, 6P, 12, and 13 standards. Its modular assembly not only reduces the weight to a mere 290 grams but also simplifies maintenance procedures, saving time and resources.
The switch operates within an extensive temperature range, from -40°C to 100°C for standard types, making it suitable for use in extreme conditions. For applications requiring chemical resistance, models with fluoro-rubber seals are available, capable of withstanding temperatures up to 120°C.
Equipped with a DPDT (Double Pole Double Throw) contact configuration, the D4A-2918N can handle complex operations. It features a variety of actuators, including roller levers, side plungers, and flexible rods, each designed to accommodate specific operational requirements. The switch's construction allows for easy adjustment of actuator and lever orientation, providing flexibility for installation and use.
The D4A-2918N is approved by UL and CSA standards, ensuring compliance with industry regulations. Its robust design and reliable performance make it an ideal choice for applications in manufacturing, automation, and other industrial settings where precision and durability are paramount.
Commonly Asked Questions
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Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.
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Frequently Asked Questions
What is the function of a limit switch like the D4A-2918N?
The D4A-2918N is a limit switch used to detect the presence or absence of an object, or to monitor and indicate whether the movement limits of that object have been exceeded. It is commonly used in industrial control systems to provide safety interlocks and to control machinery as part of an automated system.
Can the D4A-2918N limit switch be used in outdoor environments?
Yes, the D4A-2918N is designed with a high degree of protection against dust and water ingress, making it suitable for use in outdoor environments as well as in harsh industrial settings.
What types of actuators can be used with the D4A-2918N?
The D4A-2918N can be used with a variety of actuators, including roller levers, plunger types, and wobble sticks, depending on the specific application requirements. The choice of actuator will affect the operating characteristics of the switch.
How do I adjust the operating position of the D4A-2918N?
The operating position of the D4A-2918N can be adjusted by repositioning the actuator head. This can be done by loosening the screws on the switch head, adjusting the head to the desired position, and then retightening the screws.
What is the electrical service life of the D4A-2918N?
The electrical service life of the D4A-2918N varies depending on the load and operating conditions. However, it is designed for a long service life with a high number of operating cycles under typical conditions.
What certifications does the D4A-2918N hold?
The D4A-2918N is certified by recognised standards such as UL and CSA, ensuring its compliance with industry safety and performance standards.
What is the temperature range for the D4A-2918N limit switch?
The D4A-2918N can operate within a wide temperature range, making it suitable for various industrial environments. Specific temperature ranges can be found in the product's datasheet and should be consulted to ensure proper operation within the intended application.
How can I maintain the sealing capability of the D4A-2918N?
To maintain the sealing capability of the D4A-2918N, ensure that the screws for the head and switch body are tightened to the specified torque values as indicated in the product documentation.
What materials are used in the construction of the D4A-2918N?
The D4A-2918N is constructed with robust materials suitable for industrial environments, including metals and high-grade plastics that offer durability and resistance to environmental factors.
Can the D4A-2918N be used for both AC and DC applications?
Yes, the D4A-2918N is versatile and can be used for both AC and DC applications. It is important to refer to the product specifications to ensure compatibility with the electrical characteristics of your application.
Part conditions explained
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New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.
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