Product Parameters

• Manufacturer: Schneider Electric (Modicon)

• Model: AS‑B831‑001

• Series: Modicon Micro 84

• Module Type: Discrete input module

• Number of Channels: 16 (single‑ended, 2 groups of 8)

• Input Voltage: 24 VDC nominal (20–28 VDC range)

• Input Current: 10 mA per channel (typical)

• Logic Threshold: ON ≥ 17 VDC; OFF ≤ 5 VDC

• Isolation Voltage: 500 VAC (channel‑to‑backplane)

• Backplane Current: 120 mA @ 5 VDC

• Weight: Approx. 0.35 kg (0.77 lb)

• Dimensions (W×H×D): 70 mm × 100 mm × 150 mm

Specifications

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: −25 °C to +70 °C

• Humidity: 5%–95% non‑condensing

• Response Time: ≤1 ms (ON→OFF, OFF→ON)

• Mounting: 35 mm DIN rail or panel mount

• Protection Class: IP20

• Certification: CE, UL 508, CSA C22.2 No. 4

Features

• 16‑Channel 24 VDC Input: Compatible with standard industrial sensors and switches.

• Fast Response: ≤1 ms for high‑speed event detection.

• 500 VAC Isolation: Protects PLC backplane from noise and voltage spikes.

• LED Status Indicators: One LED per channel for quick troubleshooting.

• Compact Standard Size: Fits Micro 84 racks; optimizes cabinet space.

Application Fields

• Industrial machine tools & assembly lines

• Material handling (conveyors, cranes)

• Building automation (HVAC, access control)

• Water/wastewater treatment (pump status, level switches)

Compatibility

• PLC Series: Modicon Micro 84 (840, 841, 842, 843)

• Programming Software: Modsoft, Concept