Technical Specifications:​ 8 digital inputs; 24 VDC nominal; PNP sourcing or NPN sinking, configurable per group of 4 channels; typical input current 3 mA; optical isolation 500 VDC channel-to-channel and channel-to-bus; typical response 1 ms; power from CD3 backplane; maximum consumption 0.8 W; internal CD3 bus 1 Mbps; IP20; 0°C to 55°C operating; 120 x 90 x 25 mm; DIN rail or screw mounting; CE/RoHS.

Functional Features:​ Per-channel LED status, auto-reset electronic short-circuit protection, 1 ms noise filtering/debounce, backplane communication and diagnostics.

Application Scenarios:​ Packaging machines, conveyors, assembly lines, material handling, discrete signal acquisition in CD3 automation systems.

Material Composition:​ ABS housing UL94 V-0; pluggable screw terminals up to 1.5 mm²; FR-4 double-sided PCB with conformal coating.

Structural Characteristics:​ Standard single-module width with DIN clip, front channel labels, rear CD3 backplane bus connector.

Working Principle:​ Field switch closure applies 24 VDC to the input; optocoupler isolates the signal and sends it to the CD3 bus; CPU reads state, applies filtering and makes the result available to the controller program.

Installation Requirements:​ Install in CD3 rack/backplane; use 0.5 to 1.5 mm² input wiring; set PNP/NPN grouping correctly; do not energize inputs before module power during commissioning where prohibited by system rules.

Usage Precautions:​ Do not exceed 30 VDC absolute on any input; match sourcing/sinking configuration; clear short circuits before auto-reset; respect maximum module count per CD3 rack.