Details
ALSTOM LE109A-1 Control Module
Product manual:
ALSTOM LE109A-1 Control Module
ALSTOM LE109A-1 is an industrial grade control/protection module launched by Alstom, featuring high reliability, strong isolation, and anti-interference. It is widely used for critical circuit control and backup protection in power, rail transit, and heavy industry.
Core Features
Industrial grade high reliability design, suitable for harsh environments such as strong vibration, high dust, and wide temperature range (-40 ℃~+70 ℃)
Multi channel independent isolation, high isolation voltage between channels, effectively suppressing signal crosstalk
Support digital/analog signal processing, compatible with standard signals such as 4-20mA and 0-10V
Integrated multi-channel relay output, strong contact load capacity, can directly drive the actuator
Equipped with inverse time overcurrent, overload, and short circuit protection, suitable for motor and feeder backup protection
Built in fault diagnosis and status indication, easy to quickly locate anomalies
Supports communication via RS232/485, Ethernet, etc., compatible with protocols such as Modbus, IEC 61850, etc
Modular structure, installation size compatible with traditional relays, easy to retrofit
Independent hardware logic, independent of the main system, ensuring safe operation of critical circuits
Wide range DC power supply (24V~110V DC), compatible with various industrial power sources
Typical Applications
Power system: backup overcurrent protection for high-voltage motors, transformers, and feeders
Rail Transit: Train Traction/Braking Circuit, Signal System Safety Control
Heavy industry: overload protection for large motors (ball mills, fans) in mining, cement, and metallurgy
Power plant: Boiler FSSS, MFT main fuel trip, emergency shutdown ESD circuit control
Old system renovation: Smooth replacement of traditional electromagnetic relays to reduce renovation costs
This module focuses on hardware level reliability and is a key control unit in the "last line of defense" of industrial and power systems.
LE109A-1 Product details picture:

LE109A-1 product video
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