Giddings & Lewis SMP400 Motion Control Module

Technical Specifications

Model： SMP400

Brand： Giddings & Lewis

Product Type: Rack mount multi-axis digital motion control PCB for PiC900 CNC system

Module Feature:

Function: SMP400 multi-axis motion control board for G&L PiC900 CNC platform. It receives G-code program blocks from main CPU, performs high-speed linear and circular trajectory interpolation, outputs synchronized motion commands to servo drives for heavy horizontal boring mills and large machining centers.

Bus interface: Parallel backplane bus for communication with PiC900 executive CPU Servo interface: Dedicated differential motion link for axis command transmission

Onboard components: High-speed motion DSP, battery-backed RAM for axis parameter storage

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

Hardware self-diagnosis: Backplane bus integrity check, watchdog timeout, axis communication error, memory parity detection

Programming software: PiCPro for axis parameter setup, servo gain tuning and fault history review

Electrical Parameters

Backplane supply: +5VDC

Power consumption: Max 13.8W

Backup memory supply: Lithium battery to retain axis parameters after power loss

Mechanical & Structure:

Mounting: PiC900 rack slot mount with gold finger edge connector

Weight: 1.42kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +55℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PiC900 motion control board

System compatibility

Compatibility description: SMP400 belongs to Giddings & Lewis PiC900 motion control family. Compatible with PiC900 main CPU, DSM / SmartDrive servo amplifiers and G&L HSM series brushless servo motors. Widely fitted on heavy G&L horizontal boring mills.

Function

Function description: SMP400 is multi-axis motion control board manufactured by Giddings & Lewis. It acts as dedicated trajectory calculation hardware of PiC900 CNC. It receives NC program segments from CNC CPU, executes multi-axis interpolation and generates synchronized motion commands for servo axes to complete contour machining. The onboard lithium battery preserves servo configuration data when power is removed. It is legacy motion spare part for heavy G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Cut off rack +5V backplane power. Insert SMP400 board into PiC900 rack slot and secure gold finger connector. Inspect lithium backup battery. Wire servo command cables between SMP400 and servo amplifiers. Configure axis parameters and tune servo gains via PiCPro. Power on rack, verify ACT LED status, test axis jog, homing and contour cutting performance.

Interface

Interface list: PiC900 backplane gold finger connector, multi-channel differential servo command ports,on-board POWER / ACT / AXIS ALARM / FAULT LED indicators for Giddings & Lewis SMP400.

Diagnostic

Troubleshooting: Axis no response: Check servo command cable, loose connector or parameter mismatch. FAULT LED lit: Memory parity error, backplane communication failure or dead backup battery. Contour machining error: Improper servo gain or unstable differential signal.

Product Brief

Brief description: SMP400 is Giddings & Lewis legacy PiC900 multi-axis motion control board,for high speed trajectory interpolation and synchronized axis motion control on heavy CNC boring mills,discontinued CNC motion controller PCB spare.