The Alstom ALSPA LE108A-3 is a 16-channel digital input card of the ALSPA P320 series under Alstom, France. It is designed exclusively for the CE2000 series controllers to acquire and transmit digital signals in industrial control systems. Optimized for 24 VDC industrial environments, it features high stability and strong anti-interference performance, serving as a standard I/O module for critical process industries such as power, oil and gas.
Product Advantages
- Native Compatibility: Fully optimized for Alstom CE2000 controllers. Plug-and-play without additional driver configuration, enabling seamless system integration.
- Wide Voltage Range & Stable Acquisition: Supports 19.2–34 V DC input to accommodate fluctuations of industrial 24V power supply. It performs synchronous acquisition across 16 channels with zero delay. Adopting negative logic (positive pole for common terminal), it is compatible with mainstream industrial sensors and actuators.
- Industrial-grade Reliability: Manufactured in France, the module complies with CE certification and industrial EMC standards. It withstands extreme temperatures from -25℃ to +70℃, and delivers excellent vibration and electromagnetic interference resistance for harsh working conditions.
- Easy Maintenance: Modular plug-in design allows quick replacement without disconnecting wiring. On-board status LEDs indicate channel operation and faults in real time, lowering maintenance difficulty.
Product Specifications
Basic Parameters
Model: LE108A-3 (also referred to as LE108A3)Number of Channels: 16 digital input channelsInput Voltage: 19.2–34 V DC (Rated: 24 V DC)Logic Type: Negative logic (common terminal connected to positive pole)Dimensions: 265mm × 26mm × 265mm; Weight: 0.42kgHardware Version: C; Alstom Part No.: C0201050
Functional Features
- Channel Isolation: 16 channels with electrical isolation to prevent signal crosstalk and enhance system safety.
- Status Indication: Independent LED indicator for each channel to clearly display on/off status.
- Signal Filtering: Built-in hardware filter suppresses pulse interference on site and improves acquisition accuracy.
Bus Communication: Compatible with bus protocols of ALSPA P320 series for high-speed data exchange with controllers; response time ≤ 1ms.
Application Scenarios
- Power Industry: Acquisition of digital signals for thermal power, hydropower, nuclear power plants, including circuit breaker status, disconnector position and relay contact signals.
- Oil & Gas Industry: Collection of valve limit signals, pump start/stop status and safety instrument signals for oil & gas production, transmission and refining units.
- Chemical & Process Industries: Signal acquisition for on-site switches, level switches and pressure switches in chemical, pharmaceutical, water treatment and other plants.
- Rail Transit & Energy Management: Equipment status monitoring and signal collection for power supply systems of rail transit and industrial energy management systems.
Operation Guide
Pre-installation Preparation
- Confirm the controller model is Alstom CE2000. Perform all operations with the power off; hot swapping is prohibited.
- Check the module for surface damage and bent pins. Prepare matching guide rails and terminal blocks.
Hardware Installation
- Slide the module along the controller guide rails and fasten the latch to ensure tight connection with the controller backplane bus.
- Wiring: Connect the positive pole of 24 V DC power supply to the module common terminal, and the negative pole to the output terminals of sensors/actuators. Wire each digital signal channel securely.
System Configuration
- Power on the system. Launch the ALSPA configuration software to identify the module, which will automatically assign addresses for the 16 input channels.
- Adjust signal filtering parameters (default: 10ms) according to on-site interference. The channel negative logic is set by default and normally requires no modification.
Commissioning & Maintenance
- Check LED indicators: The LED lights up when the channel is on and turns off when off. Troubleshoot wiring and sensors in case of abnormalities.
- Monitor channel status via controller software to ensure normal signal acquisition. Regularly clean dust from heat dissipation grooves to avoid poor heat dissipation.
Product Comparison
| Comparison Items | LE108A-3 (Digital Input Card) | LC105A-2 (Digital Output Card) | AH116-2 (Analog Input Card) |
|---|---|---|---|
| Type | 16-channel digital input | 16-channel digital output | 8-channel analog input |
| Voltage / Signal | 19.2–34 V DC digital signal | 24 V DC / 220 V AC contact | 4–20mA / 0–10V |
| Main Purpose | Digital signal acquisition | Control of relays and contactors | Acquisition of analog signals such as temperature and pressure |
| Application Scenarios | Status monitoring and signal feedback | Equipment start/stop and valve control | Process parameter monitoring |
Frequently Asked Questions
Q: Which controllers is LE108A-3 compatible with? Can it replace other models?A: It is exclusively designed for Alstom CE2000 controllers and is a dedicated module of the P320 series. It cannot directly replace non-ALSPA modules, while it can work compatibly with other P320 I/O cards such as LC105A-2.
Q: Will the module be damaged if the input voltage exceeds 24V?A: The module supports a wide voltage range of 19.2–34 V DC, so normal voltage fluctuations will not cause issues. Long-term operation above 34V or below 19.2V will lead to abnormal signal acquisition. A regulated power supply is recommended.
Q: The channel LED is off and no signal is received. How to troubleshoot?A: ① Verify 24V power wiring and ensure the common terminal is connected to the positive pole; ② Check for faulty sensors or actuators; ③ Confirm firm connection between the module and controller bus; ④ Restart the controller or replace the module for testing.
Q: Is hot swapping allowed?A: Hot swapping is strictly forbidden, as it will burn out the module bus interface and controller backplane. Always cut off the power before installation or removal.
Q: Is severe heat generation during operation normal?A: The normal operating temperature ranges from 40℃ to 60℃. If the temperature exceeds 70℃, clean dust in heat dissipation grooves and improve ventilation.
Q: Can the number of channels be expanded? How?A: Each module has a fixed 16 channels and cannot be expanded individually. For more channels, install multiple LE108A-3 modules in parallel on the controller guide rails and assign different addresses via software.
Q: Is system reconfiguration required after replacing with a spare module?A: Direct replacement with the same model is supported. The controller will automatically recognize the module and load original configurations. No reprogramming is needed, and commissioning can be performed right after replacement.
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