Sale!
AS111A-2
AS111A-2
AS111A-2

ALSTOM GDS1002-4005 Sigma Control DC Drive Unit

  • Model: GDS1002-4005
  • Brand: ALSTOM / Converteam
  • Series: Alspa GD4000 / Sigma Control
  • Core Function: DC motor speed control
  • Product Type: DC Drive Unit / Control Unit
  • Key Specs: Sigma Control, industrial DC drive application, legacy drive replacement
  • ⚠️ Obsolete Model – Limited Stock Available
  • Condition: New Original / New Surplus / Refurbished options available
Get a Quote
Categories: , , , , SKU: GDS1002-4005 Brand:

Description

3. Key Technical Specifications

  • Part Number: GDS1002-4005
  • Manufacturer: ALSTOM / Converteam
  • Product Category: DC Drive Unit
  • Drive Family: Alspa GD4000 / Sigma Control
  • Main Function: DC motor control and drive regulation
  • Application: Industrial motor control systems, legacy ALSTOM drive installations
  • Control Platform: Sigma Control
  • Weight: Approx. 9.99 lb (4.53 kg)
  • Installation Type: Industrial electrical cabinet mounting
  • Condition Availability: New original packaging, unused surplus, and refurbished units available
  • Status: Manufacturer discontinued / legacy support item

 

4. Product Introduction

The ALSTOM GDS1002-4005 is a Sigma Control DC drive unit used in Alspa GD4000 industrial drive systems. It provides motor control functions for legacy DC drive applications where maintaining the existing ALSTOM control architecture is required.

This unit is typically sourced for replacement of failed drive hardware in installed systems. Before installation, verify drive ratings, motor parameters, firmware/configuration compatibility, and cabinet wiring against the original system documentation.

AS111A-2
GDS1002-4005

 

5. Installation & Configuration Guide

Stage 1: Pre-Installation Preparation (Approx. 15 minutes)

⚠️ Safety First

  1. Notify operations about the planned drive shutdown.
  2. Place the motor-driven equipment into a safe mechanical condition.
  3. Apply lockout/tagout procedures.
  4. Disconnect incoming power.
  5. Wait at least 5 minutes for DC bus capacitor discharge.
  6. Verify zero voltage with a multimeter before touching terminals.

Tools Required

  • ESD wrist strap
  • PH1/PH2 screwdriver set
  • Digital multimeter
  • Wire labels
  • Smartphone for photos
  • Insulated hand tools

Data Backup

  1. Record the existing GDS1002-4005 drive configuration.
  2. Photograph all power, control, and feedback wiring.
  3. Document drive parameters:
    • Motor voltage
    • Motor current
    • Speed feedback settings
    • Control references
  4. Record communication settings if connected to a supervisory system.

Stage 2: Removing the Old Module (Approx. 15 minutes)

  1. Remove cabinet access covers.
  2. Label all terminal connections before removal.
  3. Disconnect control wiring carefully.
  4. Disconnect power terminals after confirming isolation.
  5. Release mounting hardware.
  6. Remove the drive unit straight out.

⚠️ Note: Keep the original unit available until the replacement completes commissioning.

Inspect:

  • Power terminals
  • Control connectors
  • Cooling path
  • PCB condition
  • Signs of overheating

Stage 3: Installing the New Module (Approx. 20 minutes)

  1. Wear ESD protection before handling the replacement.
  2. Confirm the label matches ALSTOM GDS1002-4005.
  3. Compare terminal layout with the removed unit.
  4. Mount the replacement drive securely.
  5. Reconnect power wiring using correct torque.
  6. Reconnect control and feedback wiring.

Configuration Clone (Critical)

Copy the original:

  • Parameter values
  • Control mode
  • Motor data
  • Feedback settings
  • Communication address

Self-Checklist

[ ] Correct model installed
[ ] Power wiring verified
[ ] Control wiring matched
[ ] Parameters restored
[ ] Mounting hardware secured

Stage 4: Power-On & Testing (Approx. 20 minutes)

Pre-Power Check

  1. Check incoming voltage.
  2. Verify DC bus discharge condition.
  3. Confirm no wiring shorts.
  4. Verify motor connections.

Power-On Steps

  1. Energize the drive cabinet without enabling the motor.
  2. Check display and diagnostic indicators.
  3. Verify no drive fault codes.
  4. Connect programming/service interface if available.
  5. Restore drive parameters.
  6. Perform low-speed motor test.
  7. Verify feedback and direction.

⚠️ Troubleshooting Note

  • Immediate fault after startup: Check parameter mismatch or motor data.
  • No motor response: Verify enable signal and control reference.
  • Overcurrent fault: Check motor wiring, acceleration settings, and feedback configuration.

 

6. Frequently Asked Questions (FAQ)

Q1: Is ALSTOM GDS1002-4005 still manufactured?

No. The GDS1002-4005 is a legacy ALSTOM/Converteam Sigma Control DC drive unit. Current supply is mainly through industrial surplus, refurbished stock, or repair channels.

Q2: Is this a PLC module or a motor drive?

It is a DC drive unit, not a PLC CPU or I/O module. It controls DC motor operation within ALSTOM Alspa GD4000/Sigma Control systems.

Q3: Can I hot-swap the GDS1002-4005?

No. This unit handles motor power control. Always isolate incoming power and verify the DC bus is discharged before replacement.

Q4: Will replacing this drive erase my settings?

The drive parameters are stored within the drive/control system. Do not assume settings will transfer automatically. Record all parameters before removing the original unit.

Q5: Why is this drive available below OEM pricing?

Because it is a discontinued industrial component. Pricing depends on condition: New Original, New Surplus, or Refurbished (tested). OEM production availability may no longer exist.

Q6: What should I verify before ordering a replacement?

Confirm:

  • Exact part number: GDS1002-4005
  • Drive series compatibility
  • Motor voltage/current ratings
  • Existing control configuration
  • Physical connector layout

A matching part number alone does not guarantee a successful startup on older drive systems.

Related products