Fives Group 502-03518-00 24VDC Digital Output Module

Technical Specifications

Model： 502-03518-00

Brand： Fives Group (Giddings & Lewis)

Product Type: Rack mount opto-isolated 24VDC digital output PCB assembly for legacy PIC900 CNC system

Module Feature:

Function: 24VDC digital output module for Fives Group PIC900 CNC platform. Receives logic commands from CNC PLC processor, outputs isolated 24VDC switching signals to drive solenoid valves, contactor coils, lubrication pumps and machine indicator lamps for heavy horizontal boring mills and large machining centers.

Signal Type: Opto-electrical isolated 24VDC discrete output Bus interface: Parallel backplane bus for bidirectional real-time data communication with CNC CPU and PLC boards

Onboard components: Optocoupler isolation circuit, MOSFET drive stage, freewheeling diode for inductive load, overcurrent protection, status feedback circuit, address decoding logic

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

Hardware self-diagnosis: Output channel drive test, overcurrent detection, backplane bus integrity verification

Programming software: Fives Group proprietary CNC software for output address assignment and module diagnostic testing

Electrical Parameters

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

Power consumption: Max 7.2W

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 0.91kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PIC900 24VDC digital output module

System compatibility

Compatibility description: 502-03518-00 belongs to Fives Giddings & Lewis PIC900 CNC I/O family. Compatible with G&L PIC900 CPU and PLC processor boards. Widely deployed on heavy Fives horizontal boring mills.

Function

Function description: 502-03518-00 is opto-isolated 24VDC digital output board manufactured by Fives Group (Giddings & Lewis). It converts low-voltage CNC logic signals into 24VDC field switching outputs for machine-side DC actuators. Optocoupler separates CNC control circuit from field 24V circuit to protect rack hardware from inductive kickback and industrial electrical noise. Freewheeling diodes suppress voltage spikes generated by solenoid and coil loads. It is legacy DC output 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 502-03518-00 board into rack slot and secure gold finger connector. Connect field actuator wiring to output terminal block. Configure output address mapping parameters via Fives CNC software. Restore power, verify ACT and OUT LED indicators and test each channel switching operation.

Interface

Interface list: Backplane gold finger connector, 24VDC load signal screw terminal block,on-board POWER / ACT / OUT / FAULT LED indicators for Fives Group 502-03518-00.

Diagnostic

Troubleshooting: No load actuation: Check 24VDC field supply, wiring or damaged MOSFET driver. FAULT LED lit: Channel overcurrent trigger, backplane communication failure or surge damage. Intermittent output dropout: Inductive load voltage spike, poor grounding or aging optocoupler.

Product Brief

Brief description: 502-03518-00 is Fives Group legacy PIC900 24VDC opto-isolated digital output board,to switch DC solenoids and auxiliary machine loads on heavy CNC boring mills,discontinued CNC DC output PCB spare.