Fives Group 502-03846-00 Axis Feedback Interface Module

Technical Specifications

Model： 502-03846-00

Brand： Fives Group

Product Type: Rack mount axis encoder feedback PCB assembly for legacy CNC system

Module Feature:

Function: Axis feedback interface module for Fives Group CNC platform. Receives differential incremental encoder signals from linear and rotary axis encoders, converts pulse signals to digital position data and transmits to CNC axis control board for closed-loop position control on heavy horizontal boring mills and large machining centers.

Feedback Input: Differential incremental encoder signal Bus interface: Parallel backplane bus for high-speed data exchange with axis processor

Onboard components: Differential line receiver circuits, pulse counter IC, signal filtering, noise suppression and short-circuit protection

LED indicators: POWER, SIG, ACT, FAULT diagnostic lights

Hardware self-diagnosis: Encoder signal amplitude check, pulse count validation, backplane bus communication integrity test

Programming software: Fives Group proprietary CNC software for encoder resolution setup and module diagnostic testing

Electrical Parameters

Backplane supply: +5VDC Encoder sensor supply: 5VDC

Power consumption: Max 7.4W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 0.93kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy axis feedback interface module

System compatibility

Compatibility description: 502-03846-00 belongs to Fives Group CNC motion interface family. Compatible with Fives Group axis control processor boards and incremental encoders. Widely deployed on heavy Fives Group horizontal boring mills.

Function

Function description: 502-03846-00 is axis encoder feedback board manufactured by Fives Group. It receives position pulses from machine axis encoders, processes and counts the pulse signals, and sends real-time position value to CNC motion control board for closed-loop positioning. Differential signal reception improves anti-interference capability in harsh industrial environment. It is legacy position feedback spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power. Insert 502-03846-00 board into rack slot and secure gold finger connector. Connect shielded encoder cable to the signal terminal. Configure encoder resolution parameters via CNC software. Power on rack, verify SIG and ACT LED indicators and test axis position reading and homing function.

Interface

Interface list: Backplane gold finger connector, encoder signal screw terminal block,on-board POWER / SIG / ACT / FAULT LED indicators for Fives Group 502-03846-00.

Diagnostic

Troubleshooting: No axis position reading: Check encoder 5V supply, shielded cable wiring or damaged differential receiver. FAULT LED lit: Encoder signal loss, pulse counting error or backplane communication failure. Position drift: Poor shielding, ground loop noise or aging receiver chip.

Product Brief

Brief description: 502-03846-00 is Fives Group legacy axis feedback interface board,for collecting incremental encoder position signals for closed-loop axis control on heavy CNC boring mills,discontinued CNC encoder interface PCB spare.