Fives Group 502-03195-08 PC Support Module

Technical Specifications

Model： 502-03195-08

Brand： Fives Group (Giddings & Lewis)

Product Type: Rack mount PC support PCB assembly for legacy PIC900 CNC control system

Module Feature:

Function: PC support module for Fives Group PIC900 CNC platform. Provides auxiliary interface and hardware support for CNC main processor board. Handles system watchdog monitoring, reset logic, real-time clock, system boot control and host signal conditioning, ensuring stable operation of main CPU for heavy horizontal boring mills and large machining centers.

Bus interface: Parallel backplane bus for bidirectional data exchange with CNC main CPU Onboard components: Watchdog timer IC, real-time clock circuit, power-on reset logic, bus signal latch, non-volatile memory for system configuration, surge protection components

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

Hardware self-diagnosis: Power-on reset test, watchdog function verification, RTC integrity check, backplane bus handshake test

Programming software: Fives Group proprietary CNC software for system hardware identification and board diagnostic testing

Electrical Parameters

Backplane supply: +5VDC

Power consumption: Max 7.3W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 0.92kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PIC900 PC support module

System compatibility

Compatibility description: 502-03195-08 belongs to Fives Giddings & Lewis PIC900 CNC CPU auxiliary family. Matched with PIC900 main CPU board. Widely installed on heavy Fives horizontal boring mills.

Function

Function description: 502-03195-08 is PC support module manufactured by Fives Group (Giddings & Lewis). It is the auxiliary support board for PIC900 CNC main CPU. It provides hardware reset, watchdog fail-safe and real-time clock for system timekeeping. It stores base system configuration parameters and monitors CPU operating status. When system crash occurs, watchdog circuit triggers automatic hardware reset to protect machine safety. It is legacy CPU auxiliary spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power. Insert 502-03195-08 board into rack slot and secure gold finger connector. Inspect contact pins of main CPU and adjacent modules. Restore rack power, verify RUN and RST LED indicators, run hardware diagnostic and check system time and boot sequence.

Interface

Interface list: Backplane gold finger connector, configuration header,on-board POWER / RUN / RST / FAULT LED indicators for Fives Group 502-03195-08.

Diagnostic

Troubleshooting: System cannot boot: Check backplane power supply or gold finger contact failure. FAULT LED lit: Watchdog continuous reset, RTC error or configuration data loss. System random reboot: Power fluctuation, electromagnetic interference or aging watchdog chip.

Product Brief

Brief description: 502-03195-08 is Fives Group legacy PIC900 PC support module,provides watchdog, reset and RTC auxiliary functions for CNC main CPU on heavy CNC boring mills,discontinued CNC host auxiliary PCB spare.