SIEMENS 6ES7321-1BH02-0AA0 SIMATIC S7-300 SM 321 Digital Input Module

  • 0 reviews
  • Write a review
    • Product Code: 6ES7321-1BH02-0AA0
    • Availability: In Stock
    SIEMENS 6ES7321-1BH02-0AA0
    Manufacturer: Siemens AG, Germany
    Part No: 6ES7321-1BH02-0AA0
    Type: SIMATIC S7-300 SM 321 Digital Input Module
    Applicable: S7-300 PLC systems, industrial digital signal acquisition
    1. Product Overview
    6ES7321-1BH02-0AA0 is a 16‑channel optically isolated digital input module for Siemens SIMATIC S7-300 PLC. It collects 24 V DC digital signals from field devices (sensors, switches), with IEC 61131 Type 1 input characteristics. Features group‑wise isolation, LED status indicators, and compact design for standard DIN rail mounting. Widely used in factory automation, DCS, and ESD systems for reliable digital signal acquisition.
    2. Core Technical Parameters
    • Channels: 16 digital inputs (DI), optically isolated (group isolation)
    • Rated Voltage: 24 V DC (range: 20.4 ~ 28.8 V DC)
    • Signal Threshold: "0" = -30 ~ +5 V; "1" = 13 ~ 30 V
    • Input Delay: 1.2 ~ 4.8 ms (configurable)
    • Backplane Current: ≤10 mA (5 V DC)
    • Power Consumption: ~3.5 W
    • Isolation: Between channels & backplane (opto‑coupler)
    • Connector: 1 × 20‑pin front connector
    • Temperature: -25°C ~ +60°C operating
    • Dimensions: 125 × 40 × 120 mm; Weight: ~0.3 kg
    3. Key Functional Features
    • 16‑channel 24 V DC digital input for field sensors/switches
    • Opto‑isolation between field side and PLC backplane for noise immunity
    • IEC 61131 Type 1 compliance for universal signal compatibility
    • LED indicators for channel status and module diagnostics
    • Supports 2‑wire sensor connection (PNP/NPN compatible)
    • Hot‑swappable, easy replacement without system shutdown
    4. Application Fields
    • Factory automation: conveyor lines, machine tools, assembly lines
    • Petrochemical DCS/ESD: valve position, pressure switch, level sensor inputs
    • Power plants: turbine auxiliary systems, switchgear status monitoring
    • Water treatment: pump, valve, and flow switch signal acquisition
    Siemens © 6ES7321-1BH02-0AA0 S7-300 Digital Input Module


    Write a review