NI SCXI-1163R

Product Name: 32-Channel High-Voltage Digital Input Module

Product Introduction: An optically isolated 32-channel digital input module that accepts high-voltage field logic (AC or DC) and translates it to 5 V TTL/SCXI-bus logic for DAQ or PLC monitoring.

Category: NI

Description

Technical Specifications:

Channels: 32 optically isolated inputs
Input range: 0–250 VDC / 0–250 VAC rms (with SCXI-1326 HV TB)
Isolation: 250 Vrms channel-to-bus working
Response time: <1 ms
Power: SCXI backplane + field return

Material Composition: Optocoupler array, FR4 PCB, DIN-C connector, HV-rated screw terminals on TB

Structural Features: Bank-isolated input groups, per-bank LED, HV-rated front end

Working Principle: Field voltage drives optocoupler LED; phototransistor pulls logic line read by SCXI scan controller.

Installation Requirements: Use SCXI-1326 HV terminal block; set AC/DC jumper per bank; separate AC and DC commons; mount in SCXI-1000 chassis.

Usage Notes: Do not exceed 300 Vrms terminal limit; verify polarity for DC; avoid shared neutrals across isolated banks.

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