Product Description:

The E4809-045-109-B is a servo control printed-circuit board manufactured by Okuma for the E4809 CNC Boards series. Mounted in the electrical cabinet of an Okuma machine tool, it links the numerical control unit to the drive amplifiers and manages real-time motion commands. By localizing axis regulation on a field-replaceable board, it lets maintenance staff restore operation quickly while keeping surrounding cables undisturbed, an advantage in production cells where extended downtime cannot be tolerated.

This board regulates 2 controlled axes that are driven by brushless servo motors. A dedicated servo processor calculates velocity and position loops every cycle, using feedback from an absolute position encoder so the machine starts in known coordinates after power restoration. Reference pulses for the amplifiers are created through 1 pulse generator channel, and machine-condition signals are accepted on 6 sensor inputs such as limit or origin switches. These resources combine to deliver deterministic axis response, allowing the numerical program to execute feed rates and contour paths without perceptible lag.

System-level coordination is accomplished by supervising axis speed and axis position control for as many as 10 maximum system axes exchanged over the back-plane bus. For manual setting tasks, the operator’s hand wheel connects through 1 pulse handle channel, enabling incremental jog without altering automatic parameters. Up to three Spc1 daughter cards can be inserted to add local processing or diagnostic functions, giving integrators flexibility when multi-axis interpolation or advanced monitoring is required. Additional E4809 boards can be stacked to distribute workload across the rack, matching channel count to machine complexity while retaining common hardware and firmware.