Product Details

The Giddings & Lewis 502-03638-61 is an original industrial CPU processor module built for legacy Giddings & Lewis CNC and motion control platforms. This CNC CPU module acts as the core computing unit to execute NC programs, distribute motion commands, process encoder feedback and coordinate I/O signals for multi-axis machine tools. As a reliable motion processor board, it adopts industrial-grade components, anti-interference layout and conformal coating to resist vibration, voltage fluctuation and electromagnetic interference inside CNC electrical cabinets. This Giddings & Lewis spare card is widely used to replace faulty processor modules on ageing machining centers and turning machines, restoring full CNC interpolation, axis positioning and automatic machining functions; it is stocked as genuine replacement spare part for industrial CNC equipment.

Basic Parameters

Brand: Giddings & Lewis

Model: 502-03638-61

Type: CNC CPU processor module

Nominal supply: 24 VDC

Interface: Edge gold finger connector, serial port, field bus and memory slots

Surface protection: Conformal coating for dust and moisture resistance

Compatible system: Giddings & Lewis legacy CNC motion control system

Primary function: NC program execution, multi-axis interpolation, signal processing

Status: Obsolete original spare, available as new old stock or fully tested refurbished unit

Product type: CNC machine control CPU module

Supported Functions

This CPU module runs CNC part programs and generates interpolation commands for servo axes. It receives position feedback from encoders and resolvers, performs closed-loop calculation, and sends speed and torque setpoints to servo drives. It scans digital and analog I/O, executes machine logic, stores parameters and tool offsets, and outputs diagnostic fault codes for troubleshooting. It synchronizes spindle, feed axes and auxiliary functions to complete continuous automatic machining cycles.

Core Functions

The module form factor matches the original rack slot for direct drop-in installation. Its conformal coating extends service life in harsh machine shop environments. All bus and pin definitions follow factory original specifications, so no major wiring modification is required during replacement, and it serves as direct drop‑in substitution for existing 502-03638-61 CPU modules.

Hardware Specifications & Environmental Features

Mounting: Rack slot mounting inside CNC control cabinet

Operating temperature: 0 °C to +55 °C

Storage temperature: -40 °C to +85 °C

Relative humidity: 5% – 90%, non‑condensing

Protection: Conformal coated PCB, designed for cabinet installation

Condition: Original Giddings & Lewis CPU module

Industry Applications: Applied in legacy petrochemical distributed control, old paper making production automation, material handling conveyor lines, packaging and textile machinery, water treatment remote signal collection and large conveyor remote I/O control racks.

Note: Confirm CNC system revision, rack type and firmware version before ordering; this CPU module is dedicated for matched Giddings & Lewis CNC systems and cannot be universally applied to other CNC brands.

This is from our current stock.

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