I. Model Disassembly Definition
CS-TX3-3: Main board model, TX series high-density signal transfer interface board
81X2.54: PCB connector specification
Pitch standard 2.54mm (0.1 inch)
Built-in 81-position mounting base, compatible with 64-core standard cable
64TW: 64-channel dual-line signal terminals, TW = Twisted Pair dual-wire signal circuit
Companion system: ALSTOM ALSPA P320 power station DCS, used in conjunction with the previously queried CMP1838 main control board and MC1AB37 DI/DO board
Product Positioning
High-density I/O signal transfer motherboard, 64-channel on-site signal terminals at the front, 64-pin European-style sockets at the back for connecting to I/O boards such as MC1AB37, achieving rapid wiring within the cabinet, replacing scattered terminal blocks, and centralized distribution of DI/DO measurement points.
Core Hardware Parameters
Channel Capacity: 64 independent signal circuits (compatible with 24VDC switch quantity DI/DO)
Connector Spacing: 2.54mm standard industrial row pins, gold-plated contacts for oxidation resistance
Electrical Rating: Single channel 250VAC / 3A, insulation resistance ≥ 1000MΩ, channel-to-channel isolation withstand voltage 2kV
Structure: Standard European plug-in card, rack rail installation, dual connectors at front and back
Size: 258×225×40mm, weight 0.85kg
Operating Environment: -20℃ ~ +60℃ in the cabinet, IP20 protection, resistant to power plant electromagnetic harmonic interference
Material: Flame-retardant PBT casing, PCB with surge filter capacitors to reduce signal jitter
Core Functions
64-point centralized wiring
One transfer board uniformly connects multiple valve feedback, circuit breaker position, interlock output signals, significantly reducing the clutter of wiring in the cabinet.
Signal Filtering and Anti-interference
Each channel has an internal RC filter circuit, compatible with power plants and gas turbines with strong electromagnetic environments, eliminating switch quantity signal mis-jump.
Quick Plug-and-Play Connection
64-pin direct insertion of ALSTOM MC1AB37 I/O board at the rear, no single wire connection required, high efficiency for maintenance and replacement of board cards.
Channel Fault Visibility
Each terminal has a simple status identifier, facilitating quick troubleshooting of disconnected, short-circuited circuits.
System Compatibility
Designed specifically for ALSPA P320 complete unit control, matching CMP1838 main control backplane bus logic.
Complete Set Mating Relationship (the complete set of unit hardware you queried)
CMP1838 (TRVCO62345000): System CPU main control board
MC1AB37 4022.437.1856: DI/DO signal acquisition and output board
CS-TX3-3. 81X2.54-64TW: Companion 64-channel signal transfer terminal board
Spare Parts Lifecycle
Original Factory Status: ALSTOM ALSPA P320 production line has been discontinued, no new original factory supply after GE Power acquisition
Supply Source: Only dismantled original, refurbished, and inspected spare parts are circulated in the market, regular warranty 12 months
Compatibility: Only the same model CS-TX3-3. 81X2.54-64TW can be directly interchanged, no universal replacement transfer board
Applicable Scenarios: Steam turbine auxiliary control in thermal power plants, combined cycle gas turbines, retrofit spare parts for old hydropower stations ALSPA control systems
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