Giddings & Lewis MMC-SD-4.0-460-D SmartDrive Servo Drive

Technical Specifications

Model： MMC-SD-4.0-460-D

Brand： Giddings & Lewis

Product Type: Cabinet mount SmartDrive single-axis servo amplifier for PiC900 CNC system

Module Feature:

Function: SmartDrive single axis servo amplifier for G&L PiC900 CNC platform. It receives digital motion commands from MMC motion control boards, drives Giddings & Lewis brushless servo motors and implements closed-loop speed, torque and position control for heavy horizontal boring mills and large machining centers.

Input voltage: 180-528V three-phase AC, rated 460VAC

Command interface: SERCOS digital fiber bus interface

Feedback: Differential incremental encoder input for closed-loop position feedback

Onboard function: DSP digital servo control, built-in brake chopper

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

Hardware self-diagnosis: DC bus overvoltage / undervoltage, overcurrent, overtemperature, encoder loss, motor short circuit detection

Programming software: PiCPro for motor parameter setup, servo gain tuning and fault log reading

Electrical Parameters

Rated AC input: 460V 3-phase AC

Control supply: 24VDC auxiliary control power

Continuous output current: 4.0A continuous

Peak output current: 12A peak

Mechanical & Structure:

Mounting: Vertical cabinet backplate mounting

Weight: 3.4kg

Protection class: IP20

Environmental:

Operating temperature: 0℃ ~ +50℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy PiC900 SmartDrive servo amplifier

System compatibility

Compatibility description: MMC-SD-4.0-460-D belongs to Giddings & Lewis SmartDrive servo family. Compatible with PiC900 main CPU, MMC motion control modules and G&L brushless servo motors. Widely installed on heavy G&L horizontal boring mills.

Function

Function description: MMC-SD-4.0-460-D is SmartDrive single-axis digital servo amplifier manufactured by Giddings & Lewis. It adopts SERCOS fiber digital bus to receive high-speed motion instructions from PiC900 motion control board. It converts DC bus power into three-phase AC power to drive permanent magnet brushless servo motors, reads encoder feedback signal to realize high precision closed-loop control of speed and position. The integrated brake chopper handles regenerative energy during axis deceleration. It is legacy digital servo drive spare for heavy G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Disconnect 460V main AC power and 24VDC control power. Mount MMC-SD-4.0-460-D vertically on cabinet backplate. Wire three-phase AC input, shielded motor power cable, differential encoder cable and SERCOS fiber loop. Configure motor parameters and servo gains via PiCPro. Run drive self-test and verify axis jog, homing and positioning performance.

Interface

Interface list: 3-phase AC input terminal block, motor power terminal, encoder D-sub connector, SERCOS fiber optical ports,on-board POWER / READY / AXIS FAULT / FAULT LED indicators for Giddings & Lewis MMC-SD-4.0-460-D.

Diagnostic

Troubleshooting: AXIS FAULT: Encoder signal missing, mechanical overload or tracking error over limit. FAULT LED lit: DC bus voltage abnormality, overcurrent, overtemperature or internal hardware failure. Axis vibration: Improper servo gain setting or poor grounding and shielding

Product Brief

Brief description: MMC-SD-4.0-460-D is Giddings & Lewis legacy SmartDrive digital servo amplifier,with SERCOS fiber bus interface for heavy CNC boring mill single-axis brushless servo motor control,discontinued CNC servo drive spare.