Fives Group 502-03947-00 Digital Input Module

Technical Specifications

Model： 502-03947-00

Brand： Fives Group

Product Type: Rack mount opto-isolated discrete digital input PCB assembly for CNC system

Module Feature:

Function: Digital input module for Fives Group CNC platform. Collects 24VDC discrete digital signals from machine limit switches, safety interlocks, proximity sensors and operator panel pushbuttons, transmits captured status data to CNC main processor for heavy horizontal boring mills and large machining centers.

Signal type: 24VDC sink/source discrete input with opto-electrical isolation

Bus interface: Parallel backplane bus for high-speed data exchange

Onboard components: Opto-coupler isolation chips, signal buffer circuits, transient surge protection

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

Hardware self-diagnosis: Input channel integrity test, overvoltage detection, backplane bus communication verification

Programming software: Fives Group proprietary CNC software for input address mapping and module diagnostic testing

Electrical Parameters

Backplane supply: +5VDC Field input supply: 24VDC

Power consumption: Max 6.9W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 0.88kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy digital input module

System compatibility

Compatibility description: 502-03947-00 belongs to Fives Group CNC digital I/O family. Compatible with Fives Group CPU, motion control boards and other rack I/O modules. Widely fitted on heavy Fives Group horizontal boring mills.

Function

Function description: 502-03947-00 is opto-isolated digital input board manufactured by Fives Group. It acquires field 24VDC sensor and safety switch signals for CNC controller. Optocoupler isolation separates controller logic circuit and machine field circuit to suppress industrial electrical noise and prevent surge damage to the CNC rack. It monitors machine safety status, axis limit signals and operator panel commands. It is legacy digital input spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power and 24VDC field power. Insert 502-03947-00 board into rack slot and secure gold finger connector. Wire shielded sensor cables to input terminal block. Configure input channel addresses via Fives proprietary CNC software. Power on rack, verify ACT LED and test each input channel response.

Interface

Interface list: Backplane gold finger connector, multi-channel 24VDC input screw terminal block,on-board POWER / ACT / CH / FAULT LED indicators for Fives Group 502-03947-00.

Diagnostic

Troubleshooting: No input detection: Check 24V field supply, sensor wiring or damaged opto-coupler. FAULT LED lit: Input overvoltage, backplane communication failure or onboard circuit fault. Signal fluctuation: Poor grounding, unshielded cable or electromagnetic interference.

Product Brief

Brief description: 502-03947-00 is Fives Group legacy opto-isolated digital input module,for machine safety switch and limit signal acquisition on heavy CNC boring mills,discontinued CNC digital input PCB spare.