Description

Alstom AL129ACE2000 Alspa CE2000 Power Supply Module

Technical Specifications

• Product Model: AL129ACE2000
• Brand: Alstom
• Warranty: One Year
• Input Voltage: 96‑253 V AC, 50‑60 Hz wide‑range AC mains input
• Operating Temperature: 0 °C ~ +60 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Fast over‑current protection response <10 ms
• Protection Class: IP20, plug‑in rack‑mount module
• Accuracy Class: Industrial DCS power‑conversion grade
• Output Frequency: Not applicable
• Rated Current: Input max 2.8 A; Output: 10 A @5 VDC, 4 A @12 VDC
• Output Channels: Isolated dual‑output: +5 V DC and +12 V DC for Alspa CE2000 rack backplane
• Rack Compatibility: AM163, AM164, AM166 chassis; FB178 system backplane
• Redundancy Support: Supports parallel redundant hot‑standby configuration
• Built‑in Protection: Over‑voltage, over‑current, over‑temperature, short‑circuit shutdown
• Status Indicators: Front‑panel LED status lamps for power OK, fault alarm
• Cooling: Convection plus assisted cabinet air cooling
• Certifications: CE, EN‑61010 industrial safety compliance
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 2.02 kg
• Dimensions: 265 × 265 × 50 mm (H × D × W)

Product Overview

The AL129ACE2000 is a plug‑in chopper‑type power supply unit for Alstom Alspa CE2000 legacy DCS control racks. It converts wide‑range AC mains into stabilized isolated +5 V and +12 V DC power to feed CPU, communication boards and I/O modules on the FB178 rack backplane.

This power supply supports redundant parallel installation to achieve no‑single‑point‑failure for critical plant‑control racks. Comprehensive hardware protection mechanisms prevent downstream module damage under short‑circuit and overload fault conditions. Front‑panel LED indicators provide quick visual status for commissioning and troubleshooting. Original OEM production is discontinued; available units are mostly refurbished or new‑old‑stock spare parts for power‑plant and process‑plant Alspa‑system overhaul and maintenance projects.

Application Notes

‑ Exclusively for Alspa CE2000 series AM163 / AM164 / AM166 rack chassis; verify hardware revision before replacement. ‑ Hot‑swap replacement is permitted only for redundant‑power configured racks; cut AC input power for single‑supply racks before removal. ‑ Install inside well‑ventilated industrial cabinet; maintain adequate airflow, avoid dust accumulation and condensation. ‑ When deploying redundant configuration, follow official Alstom parallel‑wiring instructions. ‑ Strict ESD anti‑static handling required during module installation. ‑ Typical deployment: power‑plant turbine auxiliary control, pulp‑and‑paper process control, chemical‑plant legacy DCS spare‑part stocking and retrofits.