Giddings & Lewis 502-03653-01 Servo Control Module

Technical Specifications

Model： 502-03653-01

Brand： Giddings & Lewis

Product Type: Rack mount servo control PCB assembly for legacy NumeriPath CNC system

Module Feature:

Function: Servo control board for G&L NumeriPath CNC platform. It receives trajectory instructions from executive CPU, performs real-time closed-loop position and velocity servo calculation, outputs ±10V analog velocity commands and reads differential A/B/Z incremental encoder feedback for heavy horizontal boring mills and large machining centers.

Signal interface: ±10V analog velocity command output, differential A/B/Z incremental encoder input

Onboard components: Dedicated servo processor, battery backed RAM for axis servo parameters and gain settings

Bus interface: Parallel backplane bus for data exchange with CNC main CPU

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

Hardware self-diagnosis: Encoder signal loss detection, axis tracking error monitoring, analog output overrange check, watchdog timeout detection

Programming software: Giddings & Lewis proprietary CNC software for motor parameter setup, servo gain tuning and fault log reading

Electrical Parameters

Backplane supply: +5VDC

Analog reference supply: ±15VDC

Power consumption: Max 13W

Backup memory: Lithium battery to retain servo axis parameters when power off

Mechanical & Structure:

Mounting: Rack slot mount with gold finger edge connector

Weight: 1.4kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy NumeriPath servo control board

System compatibility

Compatibility description: 502-03653-01 belongs to Giddings & Lewis NumeriPath servo family. Compatible with matching rack backplane, executive CPU and analog servo amplifiers. Widely fitted on vintage heavy G&L horizontal boring mills.

Function

Function description: 502-03653-01 is servo control board manufactured by Giddings & Lewis. It acts as dedicated closed-loop servo controller for NumeriPath CNC system. It receives motion commands from CNC main processor, computes real-time position error, outputs analog speed signals to servo amplifiers and collects encoder position feedback. The onboard backup battery preserves servo tuning parameters during power loss. It is legacy servo spare for old heavy G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V and ±15VDC power supply. Insert 502-03653-01 board into rack slot and secure gold finger connector. Inspect backup battery condition. Wire shielded analog command cables and differential encoder cables. Configure motor parameters and tune servo gains. Run board self-test and verify axis jog, homing and positioning accuracy.

Interface

Interface list: Backplane gold finger connector, analog screw terminal block, A/B/Z encoder connector,on-board POWER / ACT / AXIS FAULT / FAULT LED indicators for Giddings & Lewis 502-03653-01.

Diagnostic

Troubleshooting: AXIS FAULT: Encoder signal missing, mechanical overload or tracking error over limit. FAULT LED lit: Analog output short circuit, backplane communication failure or battery depletion. Unstable axis movement: Ground loop interference, poor cable shielding or improper servo gain setting.

Product Brief

Brief description: 502-03653-01 is Giddings & Lewis legacy NumeriPath servo control board,for closed-loop axis motion control with ±10V analog command and incremental encoder feedback on heavy CNC boring mills,discontinued CNC servo PCB spare.