Products Description
Fives Group 502-03813-01 Central Service Module

Technical Specifications
Model: 502-03813-01
Brand: Fives Group
Product Type: Rack mount central service module for legacy CNC control rack system
Module Feature:
Function: Central service module for Fives Group CNC platform. Supplies regulated auxiliary DC power for rack logic circuits, handles system power monitoring, diagnostic status reporting and rack interlock management for heavy horizontal boring mills and large machining centers.
Input: 240VAC Rated power: 60W Bus interface: Parallel backplane bus for system status communication
Onboard components: AC-DC power converter, input fuse, surge suppression, overvoltage/overcurrent/overtemperature protection, status monitoring logic
LED indicators: POWER, OK, DIAG, FAULT diagnostic lights
Hardware self-diagnosis: Input power detection, output voltage supervision, thermal protection, backplane communication check
Programming software: Fives Group proprietary CNC software for power status reading and module diagnostic test
Electrical Parameters
AC Input: 240VAC, 47~440Hz Rated Output Power: 60W
Mechanical & Structure:
Mounting: Rack slot mount with gold finger edge connector
Weight: 1.00kg
Protection class: IP20
Environmental:
Operating temperature: 0℃ ~ +55℃
Ambient humidity: 5~85% non-condensing
Certification: CE
Status: Manufacturer discontinued legacy CNC central service module
System compatibility
Compatibility description: 502-03813-01 belongs to Fives Group CNC rack service module family. Compatible with Fives Group CPU boards, I/O boards and motion control boards. Widely installed on heavy Fives horizontal boring mills.
Function
Function description: 502-03813-01 is rack central service module manufactured by Fives Group. It converts AC input to stable regulated DC power to feed auxiliary logic and diagnostic circuits inside CNC rack. It continuously monitors power health and reports fault status back to CNC controller. Built-in multi-protection circuits prevent damage from power surge, overload and overheating. It is legacy central service spare part for heavy CNC boring mills.
Installation
Installation steps: Follow lockout/tagout safety procedure before installation. Cut off main 240VAC input power. Insert 502-03813-01 module into rack slot and secure gold finger connector. Wire 240VAC power to terminal block. Restore AC power, verify POWER and OK LED indicators, test power output and diagnostic reporting function.
Interface
Interface list: Backplane gold finger connector, 240VAC input screw terminal block,on-board POWER / OK / DIAG / FAULT LED indicators for Fives Group 502-03813-01.
Diagnostic
Troubleshooting: No power output: Check AC incoming supply, blown fuse or loose power terminals. FAULT LED lit: Overcurrent trip, overtemperature shutdown or internal power component failure. Intermittent alarm: AC voltage fluctuation, aging capacitor or poor rack grounding.

Product Brief
Brief description: 502-03813-01 is Fives Group legacy CNC rack central service module,with 240VAC 60W power conversion and system power diagnostic monitoring for heavy horizontal boring mills,discontinued CNC service power spare.