Schneider Electric AS-B808-016

Product Name: Modicon 800 Series Discrete I/O Module

Product Introduction: AS-B808-016 is a plug-in discrete I/O module of the Modicon 800 series from Schneider Electric, used for digital signal input and output connection between PLC systems and field switching equipment. It is a classic legacy module for the Modicon 984 controller platform, widely used in retrofitting of old automation systems.

Technical Specifications: 16-point discrete channels; logic power supplied by rack backplane 5 V DC; field signal voltage 24 V DC; operating temperature ranges from -20℃ to +60℃; protection class IP20.

Category:
Description

Functional Features: Standard single-slot rack plug-in structure; front-panel channel status LED indicator; screw-type field wiring terminal; backplane bus communication with Modicon controller; strong industrial anti-interference performance; convenient for maintenance and replacement of old-generation systems.

Application Scenarios: Transformation and maintenance of legacy Modicon PLC systems; discrete-signal control for manufacturing production lines; material-handling equipment; textile machinery; general factory digital input-output signal acquisition and control.

Performance Parameters: Real-time LED indication for channel status; meets industrial EMC anti-interference standards; high-speed data interaction via backplane bus.

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

Structural Features: Single-slot plug-in module for Modicon 800 rack; rear-end high-density backplane male connector; front-side screw terminal block and LED indicator window; mechanical locking buckle for rack installation.

Working Principle: Field digital switching signals are connected to the terminal block; the optocoupler circuit completes electrical isolation and signal conditioning; digital signals are transmitted to the Modicon CPU through the rack backplane bus; controller commands are output to field equipment through the module output circuit.

Installation Requirements: Insert into the Modicon 800-series standard rack slot; lock the module buckle; connect field switching signal wiring to screw terminals; the cabinet environment must maintain good ventilation.

Usage Precautions: Suitable for legacy Modicon 984 platform only; confirm backplane bus compatibility; avoid over-current on each discrete channel; do not hot-swap under powered-on condition; keep terminal wiring tight.

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