Giddings & Lewis 502-03840-24 Servo Encoder Interface Module

Technical SpecificationsModel：502-03840-24 Brand：Giddings & Lewis Product Type: Single-slot plug-in PiC900 series servo encoder & analog motion interface module for PiC900 rack backplane

Module Feature:Function: Combined servo interface board for PiC900 CNC system, provides analog velocity command output and differential quadrature encoder input for closed-loop axis control on horizontal boring mills and heavy machining centers. Analog output: Multi-channel ±10V analog speed reference for servo amplifiers Encoder input: Differential A/B/Z phase quadrature encoder signal acquisition Max pulse frequency: High frequency pulse counting for fast axis movement Digital input: Auxiliary 24VDC discrete input channels for axis status and limit signals LED indicators: OK, ACT, FAULT diagnostic lights Hardware self-diagnosis: Encoder loss detection, tracking error monitoring, analog signal overrange check, backplane bus diagnosis Programming software: PiCPro for encoder resolution setup, servo gain tuning and fault diagnostics

Electrical ParametersBackplane supply:+5V from PiC900 rack backplane Encoder supply:5VDC power output for field encoders Analog range:±10V Power consumption:Max 3.6W

Mechanical & Structure:Mounting:Plug into PiC900 rack single slot Weight:0.28kg Protection class:IP20

Environmental:Operating temperature:0℃ ~ +60℃ Ambient humidity:5~85% non-condensing Certification:CE Status:Manufacturer discontinued legacy PiC900 servo interface module

System compatibility502-03840-24 belongs to Giddings & Lewis PiC900 control platform. Compatible with PiC900 CPU processor boards, backplane, digital I/O modules and Centurion analog servo drives. Widely fitted on G&L 70A horizontal boring mills and PMC CNC boring machines.

Function502-03840-24 is PiC900 servo encoder analog interface module manufactured by Giddings & Lewis. It receives trajectory data from PiC900 CPU, outputs ±10V analog speed commands to servo drives, and captures differential encoder feedback signals to calculate real-time axis position and tracking error. It also accepts auxiliary 24VDC digital signals for axis limit and safety status. It is critical servo interface spare for legacy heavy G&L CNC machine tools.

InstallationFollow lockout/tagout safety procedure before installation. Cut off rack backplane power. Insert 502-03840-24 module into PiC900 backplane slot and lock retainer. Connect shielded analog command cables and differential encoder cables separately from high-power wiring. Configure encoder line count, axis direction and servo gain parameters in PiCPro. Power on rack and test axis homing and closed-loop positioning.

InterfacePiC900 backplane gold-edge connector,multi-channel analog terminal block,differential encoder terminal block,on-board OK / ACT / FAULT LED indicators for Giddings & Lewis 502-03840-24.

DiagnosticAxis tracking error alarm:Check encoder cable shielding, connector contact or incorrect servo gain. FAULT LED lit:Encoder signal loss, analog output overrange or backplane communication fault. No axis movement:Missing analog command output, wrong wiring polarity or axis enable signal missing.

Product Brief502-03840-24 is Giddings & Lewis legacy PiC900 servo encoder analog interface module,with ±10V analog command and differential encoder input for CNC boring mill closed-loop axis control,discontinued CNC servo spare card.