E4809-032-397-F Okuma
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MPN: PC-1662-F
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The Okuma E4809-032-397-F is an INR PC interface board from the E4809 CNC Boards series, designed for use with the OSP3000 control platform. It features a dual card edge connector style, through-hole component mounting, and uses DIP IC packages in the 74LS TTL logic family. The board weighs 3000 grams and has two guide retainers.
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Product Description:
The E4809-032-397-F is a printed-circuit assembly produced by Okuma within the E4809 CNC Boards series. It is installed inside OSP numerical control cabinets to mediate data exchange between the machine controller and external automation hardware. By placing a dedicated interface layer next to the motion processor, the board supports reliable communication with operator PCs and diagnostic tools during machining cycles, keeps cabling short, and maintains timing integrity across serial links. This arrangement also helps isolate peripheral communication activity from the main control path so the central processor can remain focused on machine motion and command execution.
The board carries the Okuma designation of INR Board, identifying it as an input-register layer that conditions control signals before they reach the CPU. Its operating role is further clarified by the label PC Interface Board, which indicates that the circuit supports address decoding and handshake lines for parallel bus access from desktop computers. All active devices are soldered to a Through-Hole substrate, a mounting style chosen for mechanical strength when high-mass connectors are present. Host connectivity is provided with a Dual Card Edge termination, allowing direct insertion into the backplane without ribbon adapters. Firmware coordination aligns with the OSP third-generation control core, noted here as OSP3000, so register maps match that platform’s memory layout. This separation of interface logic from the main controller also helps keep external data traffic organized inside the cabinet.
The assembly is secured in the rack by 2 guide retainers that keep the card parallel to neighboring modules during vibration. Integrated circuits follow the DIP footprint, which keeps package orientation and pin spacing easy to verify during inspection. All logic belongs to the 74LS TTL family, so the board switches at low power while presenting the 0.4 V and 2.4 V noise margins expected by companion cards. A shipping weight of 3000 g includes the stiffener bar and guide hardware. The added support hardware helps the board remain stable in the rack and protects edge connections from misalignment during normal cabinet vibration.
