Fives Group 502-03638-41 PLC Processor Module

Technical Specifications

Model： 502-03638-41

Brand： Fives Group

Product Type: Rack mount PLC processor PCB assembly for legacy CNC control system

Module Feature:

Function: PLC processor module for Fives Group CNC platform. Executes real-time ladder logic, handles machine safety interlock, auxiliary sequence control, I/O data processing, and communicates with CNC main CPU and rack I/O modules for heavy horizontal boring mills and large machining centers.

Bus interface: Parallel backplane bus for high-speed bidirectional data exchange with CNC CPU and I/O boards

Onboard components: PLC processing chip, logic memory IC, watchdog timer, boot firmware, address decoding circuit, reset control logic

LED indicators: POWER, RUN, PLC, FAULT diagnostic lights

Hardware self-diagnosis: Power-on self-test, program checksum verification, watchdog timeout monitoring, backplane bus integrity check

Programming software: Fives Group proprietary CNC software for ladder logic upload/download, PLC parameter configuration and board diagnostic testing

Electrical Parameters

Backplane supply: +5VDC

Power consumption: Max 9.2W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 1.01kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PLC processor module

System compatibility

Compatibility description: 502-03638-41 belongs to Fives Group CNC control board family. Compatible with Fives Group CNC main CPU, digital input/output modules and axis control boards. Widely deployed on heavy Fives Group horizontal boring mills.

Function

Function description: 502-03638-41 is dedicated PLC processor board manufactured by Fives Group. It is responsible for real-time execution of machine ladder logic independent from CNC motion CPU. It manages safety chain, hydraulic sequences, coolant control, tool change logic and all auxiliary machine functions. It exchanges I/O status signals between field modules and CNC main controller. Onboard watchdog circuit monitors program running state and triggers fault alarm once abnormal operation occurs. It is legacy PLC processing spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power. Insert 502-03638-41 board into rack slot and secure gold finger connector. Verify rack backplane connections. Load ladder logic program via Fives proprietary CNC software. Restore rack power, verify RUN and PLC LED indicators, run POST self-test and test machine auxiliary sequence and interlock function.

Interface

Interface list: Backplane gold finger connector,on-board POWER / RUN / PLC / FAULT LED indicators for Fives Group 502-03638-41.

Diagnostic

Troubleshooting: PLC program cannot run: Check +5V backplane supply, backplane contact integrity or program checksum error. FAULT LED lit: Watchdog timeout, POST failure or backplane communication breakdown. Intermittent logic trip: Electrical noise interference or aging logic chip.

Product Brief

Brief description: 502-03638-41 is Fives Group legacy PLC processor board,for real-time ladder logic execution and machine auxiliary interlock control on heavy CNC boring mills,discontinued CNC PLC processor PCB spare.