D4-UV-2 Image One
3 year warranty

D4-UV-2 Image 1
D4-UV-2 Image 2


    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.44 (9)
  • Click a star to rate this product
    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.44 (9)
  • Click a star to rate this product
The D4-UV-2 module is one of the 15.5K storage capacity memory cartridges manufactured by Automation Direct for the DirectLogic 405 series. This module has an ultraviolet light memory clear method. The D4-UV-2 module does not have a write inhibit but has a writing cycle life of 1,000.



Sell Surplus: Have a D4-UV-2 to sell? Sell Now
Exchange Credit: Learn more about our exchange credit program
  • Part Number: D4-UV-2
  • SKU: D4UV2AD
  • Manufacturer: Automation Direct
  • Series: DirectLogic 405

D4-UV-2 Technical Specifications

Model Number D4-UV-2
Series DirectLogic 405 (DL405)
Manufacturer Automation Direct
Model Type Memory Cartridge
Program Storage Memory Capacity 15.5K
Memory Clear Method Ultraviolet Light
Battery Type None

Product Description

A product of Automation Direct, the D4-UV-2 is a Memory Cartridge that fits the D4-440 and D4-450 CPU Modules. The Memory Cartridge increases the amount of space available to these units and utilizes non-volatile memory technology, meaning that the data is retained even when the power is disconnected. The device also features a user-friendly plug-and-play design, allowing for effortless installation and removal without the need for complex wiring or configuration. Furthermore, the cartridge supports high-speed data transfer, allowing for swift and efficient uploading and downloading of PLC programs and data. This feature simplifies system maintenance, programming updates, and data backup procedures, saving valuable time and effort.

While the D4-440 and D4-450 devices have some built-in memory, the D4-UV-2 Memory Cartridge significantly enhances the memory capabilities of these units. This expanded memory enables the user to accommodate larger and more complex control programs, data tables, and configuration settings, providing the flexibility needed to optimize automation processes. The D4-UV-2 offers 15.5 K program storage, over double what the built-in memory of the D4-450 offers on its own. It clears its memory through ultraviolet light methodology. This particular unit does not include any write inhibit technology, though users can contemplate other memory cartridges in these series that offer this feature.

Frequently Asked Questions about D4-UV-2

What is the D4-UV-2?

The D4-UV-2 module is a UVPROM memory cartridge to be inserted into one of the DL405 CPUs, such as the D4-440 or D4-450, the D4-430 module does not require a memory cartridge. This cartridge will add 15.5K program storage capacity to the D4-450 CPU as it already has 7.5K memory. 

Can I remove the memory cartridge from the CPU at any time?

No, the memory cartridge inserted into the CPU should only be removed when power has been disconnected. If the cartridge is removed when the CPU is still on, it can potentially cause the cartridge to become unreliable and a new memory cartridge would need to be purchased. 

Do I always have to use the memory on the D4-UV-2 cartridge?

No. The AUX 25 RLL function on the CPU allows the user to choose whether or not the CPU's built-in flash memory or the D4-UV-2 cartridge will be utilized as the current sorking memory. 

Reviews For D4-UV-2

Internal Review

While the D4-UV-2 unit can be used on its own, it is highly recommended that either an EEPROM or RAM cartridge also be purchased for program development. While the extra cartridges are highly recommended, this unit is also excellent to use as they typically do not require frequent alterations. - AX Control Tech

Repair Services For D4-UV-2

Type Lead Time Price Action
Repair Service 1-2 weeks $355

Our highly skilled technicians can repair your D4-UV-2. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More