Fives Group 502-03112-00 Relay Output Module

Technical Specifications

Model： 502-03112-00

Brand： Fives Group (Giddings & Lewis)

Product Type: Rack mount relay output PCB assembly for legacy G&L CNC control system

Module Feature:

Function: Relay output module for Fives Group CNC platform. Receives logic signals from CNC PLC processor, drives onboard mechanical relays to switch external AC/DC loads. Used to control machine auxiliary equipment including coolant pumps, lubrication units, tool magazine solenoids and machine indicators for heavy horizontal boring mills and large machining centers.

Output Type: Electromechanical relay contact output Bus interface: Parallel backplane bus for bidirectional data communication with CNC CPU and PLC board

Onboard components: Industrial sealed relays, relay drive transistors, surge suppression diodes, contact status feedback circuit, overcurrent protection, address decoding logic

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

Hardware self-diagnosis: Relay coil drive test, contact feedback detection, backplane bus communication verification

Programming software: Fives Group proprietary CNC software for relay output address mapping and board diagnostic testing

Electrical Parameters

Backplane supply: +5VDC Relay coil supply: 24VDC Relay contact rating: 120VAC / 24VDC

Power consumption: Max 7.5W

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 CNC relay output module

System compatibility

Compatibility description: 502-03112-00 belongs to Fives Group G&L 8000A CNC I/O family. Compatible with Giddings & Lewis legacy CPU and PLC processor boards. Widely fitted on heavy Fives horizontal boring mills.

Function

Function description: 502-03112-00 is relay output board manufactured by Fives Group (Giddings & Lewis). It converts low voltage CNC logic signals into dry relay contact switching outputs for machine auxiliary loads. Isolated relay contacts separate CNC control circuit from high-power field loads, protecting control rack from inductive spike and surge damage. It is legacy auxiliary relay control spare for heavy CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power and relay 24VDC coil power. Insert 502-03112-00 board into rack slot and secure gold finger connector. Wire external loads to relay contact terminal block. Configure output address mapping via Fives CNC software. Restore power, verify RELAY and OUT LED indicators and test each relay switching action.

Interface

Interface list: Backplane gold finger connector, relay contact screw terminal block,on-board POWER / RELAY / OUT / FAULT LED indicators for Fives Group 502-03112-00.

Diagnostic

Troubleshooting: Relay not pulling in: Check 24VDC coil supply, wiring or damaged drive transistor. FAULT LED lit: Backplane communication failure, relay coil short or contact feedback fault. Relay contact cannot drive load: Contact wear, load overload or inductive spike damage.

Product Brief

Brief description: 502-03112-00 is Fives Group legacy relay output board,drives mechanical relays to switch machine auxiliary loads for CNC auxiliary control on heavy CNC boring mills,discontinued CNC relay interface PCB spare.