Model Interpretation

AS: Modicon Automation System

B872: 4‑channel analog output（current）

000/001: Early standard 4–20 mA variant（superseded by ‑002）

Technical Parameters

Outputs: 4 channels, 4–20 mA（single‑ended）

Resolution: 12 bits（0.024% FSR）

Accuracy: ±0.1% FSR @ 25°C；±0.17% FSR @ 0–60°C

Load Range: 0–500 Ω（per channel）

Backplane Power: +5V 300 mA

Isolation: Channel‑to‑backplane 500 Vrms（opto‑isolated）

Response Time: ≤5 ms（all channels update）

Indicators: 4 LED status（1 per channel）

Operating Temp: 0°C to +55°C

Storage Temp: ‑40°C to +85°C

Dimensions: 51 × 203 × 279 mm（2.0 × 8.0 × 11.0 in）

Weight: ≈0.60 kg（1.31 lbs）

Origin: France/USA

Interface & Configuration

Backplane: Modicon 800/984 I/O bus

Terminals: Screw terminals（4×current out, common ground）

Wiring: 0.5–2.5 mm² copper

Connector: AS‑8535‑000（field wiring）

Core Functions

4‑Ch 4–20 mA Output: Drives valves, VFDs, regulators

12‑Bit Precision: High linearity for closed‑loop control

Isolated Channels: Reduces noise & fault propagation

LED Diagnostics: Real‑time status for quick troubleshooting

Applications

Systems: Modicon 800, 984, 300‑series PLCs

Industries: Chemical, water treatment, HVAC, packaging

Use Cases: Flow/pressure control, damper positioning, VFD speed control

Compatibility

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

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

Software: Concept, ProWORX 32, P190