Description

Product Overview

The ALSTOM MAE99-04 is an 8-channel serial interface isolation unit for power plant DCS and turbine control systems. It delivers 8 independent bidirectional serial channels, software configurable for RS232, RS422 and RS485, providing reinforced galvanic isolation between the main control rack and field serial instruments, RTUs and protective relays. This hardware eliminates ground loops and suppresses high-voltage transients and EMI noise common in power generation control cabinets, preserving serial communication integrity for continuous power plant monitoring. Power and turbomachinery control engineers rely on this spare module for system maintenance and retrofit projects. Per-channel transmit/receive diagnostic LEDs enable fast visual troubleshooting, and it supports dual redundant 24V DC power supply for high availability.

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Technical Specifications

• Product Model: MAE99-04
• Brand: Alstom
• Warranty: One Year
• Input Voltage: 18–30 V DC, dual redundant power input
• Operating Temperature: -25 °C to 70 °C
• Storage Temperature: -40 °C to 85 °C
• Response Time: ≤10µs signal transmission delay
• Protection Class: IP20, 2500V AC reinforced galvanic isolation
• Accuracy Class: Not applicable (serial isolation module)
• Output Frequency: Not applicable
• Rated Current Range: Low logic power consumption
• Communication Interface: 8 serial channels; backplane edge connector
• Supported Protocols: RS232, RS422, RS485
• Overload Capacity: ESD surge suppression, wire break and link failure detection
• Dimensions: Standard 3U rack plug-in module form factor