MODICON AS-BADU-204

Product Name: Four-Channel Analog Input Module (Modicon 800 Series)

Product Introduction: AS-BADU-204 is a 4-channel analog input module of the Modicon 800 series manufactured by Schneider Electric. It collects analog signals from field transmitters and sensors, performs dual-slope integral A/D conversion, and transmits digital data to the Modicon controller.

Category:
Description

Technical Specifications: 4 single-ended analog input channels; dual-slope integral conversion with 12-bit resolution; supports input signals including 0-10 V, 1-5 V, 4-20 mA, PT100 thermal resistance and ±500 mV sensor signal; logic power 5 V DC supplied by rack backplane; operating temperature ranges from 0℃ to +60℃.

Functional Features: Single-slot rack-mount structure; supports multiple analog signal types; front-panel fault and running status LED indication; adapts to two-wire transmitters and RTD temperature sensors; compact size for cabinet installation; designed for long-term stable operation of legacy industrial systems.

Application Scenarios: Old Modicon PLC system renovation; temperature, pressure and flow signal acquisition for textile machinery, packaging equipment and material-handling equipment; general factory process-variable monitoring.

Performance Parameters: 12-bit conversion accuracy; requires external field-loop power supply for 4-20 mA two-wire transmitters.

Material Composition: Flame-retardant ABS plastic housing; industrial-grade PCB; gold-plated backplane connector; metal screw wiring terminals.

Structural Features: Single-slot plug-in unit for Modicon 800 rack; rear-end backplane bus connector; front-side field-wiring terminal block and indicator light window; mechanical locking buckle.

Working Principle: Field analog signals enter module terminals; the dual-slope integral ADC converts analog quantities into 12-bit digital values; digital data is uploaded to the Modicon CPU through the rack backplane bus; the module self-diagnosis circuit detects internal faults and triggers the fault indicator light.

Installation Requirements: Plug into the Modicon 800-series rack slot; lock the mechanical buckle; connect sensor wiring to corresponding terminals; provide external loop power supply for two-wire transmitters; use copper wire for field wiring with specified screw torque.

Usage Precautions: Ground-loop interference shall be avoided in field wiring; do not hot-swap under power-on state; confirm signal type configuration before commissioning; avoid over-range input signals.

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