Technical Specifications Input Signal Type: 24 VDC discrete digital input Rated Input Voltage: 24 VDC Input Voltage Range: 0‑30 VDC Channel Quantity: 32 points, divided into 4 isolated groups with 8 channels per group Input Filter Time: 7 configurable filter time grades Field‑to‑Backplane Isolation: 250 VAC continuous, 1500 VAC for 1 minute Operating Power Supply: Supplied via RX3i system backplane Operating Temperature: ‑40 ℃ to +70 ℃ Storage Temperature: ‑50 ℃ to +85 ℃ Relative Humidity: 5%‑95%, non‑condensing Mechanical Dimension: Single‑slot module for RX3i standard rack Certifications: CE, UL industrial control compliance
Functional Features Supports 32‑channel high‑density digital signal acquisition. Compatible with positive logic and negative logic field wiring. Configurable input filter suppresses industrial electromagnetic interference and signal bounce.
Application Scenarios Discrete signal acquisition for manufacturing production lines. Position detection of limit switches and photoelectric sensors. Status monitoring for power distribution cabinet switchgear and circuit breakers. Signal collection for water‑treatment valve position and pump equipment. 
Structural Characteristics Standard single‑slot plug‑in structure compatible with RX3i series rack. Front‑panel LED indicator lamps for each input channel status display. Field signal terminals arranged on module front for convenient wiring and maintenance.
Working Principle Field 24VDC discrete signals access through front‑side terminals. Configurable hardware filter circuits eliminate contact bounce and high‑frequency interference. Optocoupler components complete electrical isolation between field side and internal logic circuit.
Installation Requirements Insert the module into designated slot of RX3i standard rack. Ensure rack protective ground connection complies with official system grounding specification. Field signal wiring shall adopt shielded cables; separate signal cables and power cables routing to avoid crosstalk.
Usage Notes Do not apply input voltage exceeding 30 VDC to signal channels. Keep dust accumulation inside control cabinet under control to avoid connector contact failure. Carry out regular inspection for front‑panel LED status indicators.
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