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Mitsubishi AJ71AP21

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£217.52 (ex. VAT)

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Marvo Stock ID MV-M15
HS Code 851762
SKU AJ71AP21
Condition Used
Category General Automation
Warranty 12 months
Weight (kg) 0.50
Length (mm) 90.00
Width (mm) 27.00
Height (mm) 98.00

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification Description
Part Number AJ71AP21
Alternative Part Number AJ71AP21
Manufacturer Mitsubishi
Category General Automation
Description Fiber Link Board for networking between master and local stations in automation systems.
Network Type MELSECNET(II) and /B compatible
Production Status Discontinued, with continued production for spare parts usage until September 2008
Compatibility Compatible with MELSEC-A/QnA series PLCs
Communication Supports optical data link systems with SI cables, coaxial data link systems
Transition Options Can transition to MELSECNET/10(H) with appropriate system changes
Maintenance Recommendations Advised to purchase spare parts before the order deadline due to discontinuation
Additional Features Utilises A-A1S conversion adapter for machinery/line modifications

The Mitsubishi AJ71AP21 is a high-performance Fiber Link Board designed to facilitate efficient and reliable communication in industrial automation systems. This part serves as a crucial component in the MELSECNET(II) and /B data link modules, providing a robust and secure connection between the master and local stations. Despite the discontinuation of some models in the MELSECNET series, the AJ71AP21 remains in production, ensuring its availability for system maintenance and modifications. This part is ideal for applications that require high-speed data transfer and seamless integration with existing Mitsubishi automation systems. Its durable construction and advanced technology make it a reliable choice for demanding industrial environments.

Commonly Asked Questions

Is my order covered by a warranty?

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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What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

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Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

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Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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How do I create an account?

Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.

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Peace of mind with every purchase

Stars Blažej Knežo

‘Quick response and fast delivery of the product.’

Stars Milan Kosík

‘Large selection of spare parts, fast delivery.’

Stars Nathalie Jolicoeur

‘Great service. Thank you.’

Our service to you

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Frequently Asked Questions

What is the main function of this part?

The AJ71AP21 is a Fiber Link Board Net to Master Local. It is used to facilitate communication and data transfer in industrial automation systems.

Is this part still in production?

No, the production of the AJ71AP21 has been discontinued as per the technical bulletin from Mitsubishi.

What are some common uses of this part?

The AJ71AP21 is commonly used in industrial automation systems, particularly in systems that require high-speed, reliable data transfer.

What are the alternatives to this part?

While the AJ71AP21 has been discontinued, Mitsubishi recommends transitioning from MELSECNET(II),/B to MELSECNET/10(H).

What should I do if I need to replace this part?

If you need to replace the AJ71AP21, you can consider using the AnS series modules as they are still in production.

Can I use the existing MELSECNET(II) communication cables with this part?

Yes, the MELSECNETII communication cables (optical cables and coaxial cables) can be used with the AJ71AP21.

Can I use the MELSECNET/B twisted pair cables with this part?

No, the MELSECNET/B twisted pair cables cannot be used with the AJ71AP21. You should consider transitioning to an optical loop system or coaxial bus system.

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Part conditions explained


We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

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.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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