Fives Group 502-02496-00 Axis Control Module

Technical Specifications

Model： 502-02496-00

Brand： Fives Group (Giddings & Lewis)

Product Type: Rack mount axis motion control PCB assembly for legacy PIC900 CNC control system

Module Feature:

Function: Axis control module for Fives Group PIC900 CNC platform. Receives axis position command from CNC CPU, executes closed loop position and velocity control. Outputs analog command signal to servo drive, reads encoder position feedback to control machine linear or rotary axes for heavy horizontal boring mills and large machining centers.

Feedback Input: Incremental encoder A/B/Z pulse signals Command Output: ±10V analog velocity command Bus interface: Parallel backplane bus for real-time bidirectional data exchange with CNC CPU

Onboard components: Encoder pulse receiver, position counter, servo control algorithm logic, DAC analog output circuit, watchdog timer, signal filtering circuit, address decoding logic

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

Hardware self-diagnosis: Encoder signal integrity test, position counter self-check, backplane bus communication verification

Programming software: Fives Group proprietary CNC software for axis parameter setup, gain tuning and board diagnostic testing

Electrical Parameters

Backplane supply: +5VDC, ±15VDC

Power consumption: Max 8.6W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 0.98kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PIC900 CNC axis control module

System compatibility

Compatibility description: 502-02496-00 belongs to Fives Giddings & Lewis PIC900 motion control family. Compatible with PIC900 CPU, incremental encoder and analog servo drives. Widely deployed on heavy Fives horizontal boring mills.

Function

Function description: 502-02496-00 is dedicated axis motion control board manufactured by Fives Group (Giddings & Lewis). It performs closed-loop position control for single machine axis. The board receives target position from CNC CPU, compares target value with actual encoder feedback, calculates control output and sends ±10V analog speed command to servo amplifier. Watchdog circuit triggers axis shutdown on abnormal state to protect machine. It is legacy axis motion control spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5VDC and ±15VDC backplane power. Insert 502-02496-00 board into rack slot and secure gold finger connector. Connect shielded encoder feedback cable and analog command cable to servo drive. Configure axis parameters via Fives CNC software. Restore rack power, verify RUN and POS LED indicators, run axis diagnostic and test manual jog movement.

Interface

Interface list: Backplane gold finger connector, encoder feedback terminal block, analog servo command terminal block,on-board POWER / RUN / POS / FAULT LED indicators for Fives Group 502-02496-00.

Diagnostic

Troubleshooting: Axis cannot jog: Check encoder wiring, ±15V power or analog command output failure. FAULT LED lit: Encoder signal loss, position tracking error or backplane communication fault. Axis vibration or position drift: Incorrect servo gain, encoder noise interference or aging signal receiver chip.

Product Brief

Brief description: 502-02496-00 is Fives Group legacy PIC900 axis control board,provides closed-loop position control for machine axis with encoder feedback and ±10V analog servo output on heavy CNC boring mills,discontinued CNC motion control PCB spare.