E4809-45-091-E Okuma
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The Okuma E4809-45-091-E, part of the E4809 CNC Boards series, is crafted from stainless steel with an electropolished surface finish. It features a 45 mm diameter, a length of 91 mm, and a mounting type of threaded with a thread size of M16 x 1.5. The unit supports a pressure rating of 16 bar.
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Product Description:
The E4809-045-091-E is a main logic board developed by Okuma for CNC control systems and it serves as the central processing unit. The board includes proprietary ICs, gold-plated edge connectors and legacy-compatible ribbon interfaces for seamless coordination of motion control, I/O management and external peripheral communication.
The E4809-45-091-E CNC Board has a LM339 quad comparator which is used to detect signal thresholds and transitions, that is critical for interpreting analog feedback signals like limits, encoder zero pulses or tool contact sensors. It also incorporates an octal bus transceiver which facilitates bidirectional communication between different parts of the board, buffering and translating logic signals to ensure reliable data flow in electrically noisy industrial environments. The module has multiple logic chips which implements fundamental digital operations like signal gating, timing and memory control. The inclusion of ROM chips stores the board’s firmware and machine instruction sets, including boot routines, CNC operational logic and potentially user-defined macros or program segments. It is also included with multiple gold plated edge connectors which enables insertion into a shared motherboard or backplane assembly, supports modular system expansion and streamlined communication with other control modules. In this module the pin headers for ribbon cables allow direct cable connections to auxiliary components, signal conditioning modules or sensor interfaces.
The E4809-45-091-E CNC Board has two blue DB style connectors which provide dedicated communication ports for external data input/output devices and that are specifically tailored for serial tape readers. The board consolidates multiple resistors into compact arrays to standardize pull-up or pull-down values, reduce board space and ensure uniform signal conditioning across control lines. It comes with a toroidal inductor which filters out electrical noise and voltage spikes, protects sensitive digital circuits and stabilizes power delivery in electrically volatile industrial settings.
