Model Interpretation

AS: Modicon Automation System

B833: 16‑point 24VDC true‑low input module

000: 16 points, 2×8 common groups, standard input rating

Technical Parameters

Inputs: 16 channels, 24VDC true‑low (sinking/NPN)

Operating Voltage: 20–28VDC (field supply)

Input Current: 6mA per point (typical @24VDC)

Input Impedance: <200Ω (ON); >10kΩ (OFF)

Logic Levels:

Signal 0: ≤5VDC

Signal 1: ≥15VDC

Isolation: Optical coupling, 1500VAC channel‑to‑backplane

Response Time: ≤1ms (ON/OFF)

Backplane Power: +5V 160mA; +4.3V 1mA

Operating Temp: 0°C to +55°C

Storage Temp: -40°C to +85°C

Humidity: 5%–95% non‑condensing

Weight: ≈1.0kg (2.2lbs)

Dimensions: 50×119×125mm

Origin: France

Interface & Configuration

Backplane: Modicon 800/984 I/O bus

Terminals: Screw terminals (16 inputs, 2 common groups ×8)

Indicators: 16 LEDs (ON when input active)

Wiring: 0.5–2.5mm² copper wires

Terminal Connector: AS‑8534‑000

Core Functions

24VDC True‑Low Input: Active‑low logic for direct interface with standard 24V sensors/switches

Dual Common Groups: 2×8 isolated groups for flexible signal routing

Optical Isolation: Protects PLC from field‑side electrical noise and faults

Fast Response: 1ms sensing for high‑speed on/off signals

LED Status: Individual channel LEDs for quick diagnostics

Applications

Systems: Modicon 800, 984, 300‑series PLCs

Industries: Material handling, packaging, textile machinery, general automation

Use Cases: 24V proximity sensors, limit switches, pushbuttons, relay contacts

Compatibility

Racks: Modicon 800/984 8/11‑slot backplanes

CPUs: AS‑984B‑128, PC‑E984‑685, AS‑9370‑001

Software: Concept, ProWORX 32, P190