D4-440 | Koyo DL405 CPU - Discontinued & Obsolete
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D4-440 | Koyo DL405 CPU - Discontinued & Obsolete
£999.00
Koyo DL405 CPU – Model D4‑440 (Discontinued & Obsolete)
The Koyo DL405 CPU module, model D4‑440, was a central processing unit designed for the DL405 family of PLC systems. Although now discontinued and classified as obsolete, this module once served as the core control element for mid‑range PLC projects — offering logic processing, I/O control, and automation management in a compact, modular design. For facilities and plants maintaining legacy control architectures, the D4‑440 remains relevant as a reference for maintenance, retrofits, or compatibility checks with existing DL405-based systems.
Key Features:
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Provides core logic processing and control functions for DL405 PLC systems — enabling automation logic, I/O management, and process control tasks.
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Modular design allowing integration with a range of DL405 I/O expansion modules — facilitating flexible system configuration and scalable control architecture.
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Industrial‑grade design suitable for typical automation environments — offering mechanical and electrical robustness in manufacturing and process‑control settings.
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Compact form factor enabling space-efficient installation in control panels or PLC racks.
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Straightforward configuration and programming support (consistent with the DL405 family’s standards) — facilitating easier maintenance and management of existing automation systems.
Specifications (Typical for DL405‑class CPUs):
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Part Number: D4‑440
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Device Type: PLC Central Processing Unit (CPU) for DL405 series controllers
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Function: Executes user-defined logic, manages I/O modules, controls automation sequences and process operations
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Compatibility: DL405 modular PLC base and associated I/O expansion modules compatible with the DL405 platform
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Construction: Industrial-grade PLC module housing engineered to withstand factory‑floor conditions including electrical noise, temperature variation, and mechanical vibration
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Application: Factory automation, process control, discrete and analog I/O management, machine control, batch processing, and other PLC-based automation systems
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Status: Discontinued / Obsolete — not recommended for new installations, but may still be used in legacy systems needing maintenance or replacement parts
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Availability: Subject to existing stock or second‑hand markets; may no longer be produced or formally supported
Because the Koyo DL405 CPU D4‑440 is obsolete, it is generally not recommended for new automation projects. However, for legacy installations relying on DL405 architecture, this module may still serve for maintenance or parts replacement — with due consideration for parts availability and support limitations. For alternative, up-to-date PLC solutions, Ram Automations can help you explore modern modules compatible with your existing or new automation requirements. Contact us at info@ramautomations.com to discuss retrofit or upgrade options.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
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