Overview
The Honeywell 900A01-0002 Universal Analog Input Module is a highly versatile module that supports up to 8 user-configurable analog inputs per channel. It accommodates various input types, including thermocouple (T/C), RTD, resistance, voltage (V), millivolts (mV), milliamps (mA), and slidewire. The module ensures point-to-point isolation and backplane isolation, allowing reliable and noise-free signal acquisition for industrial automation applications.
Key Features
8 Isolated Analog Inputs: User-configurable for T/C, RTD, resistance, voltage, current, or slidewire.
Point-to-Point & Backplane Isolation: Provides 400 VDC isolation per point, 1K VDC to logic.
Fast A/D Conversion: Real-time data acquisition synchronized with CPU execution.
Parallel Processing: Eliminates increased scan times as more modules are added.
Failsafe Function: User-selectable per channel.
Diagnostic Capabilities:
Thermocouple sensor failure warning.
Red LED for module diagnostics.
Green LED for scanning status.
Amber LED when input channels are forced.
Electrical & Performance Specifications
Inputs per Module: 8 (Isolated)
Supported Input Types: mV, V, T/C, RTD, Ohms, mA, Slidewire
Input Impedance:
10 MΩ for T/C and mV inputs
>1 MΩ for volts
250 Ω for mA inputs
Galvanic Isolation: 400 VDC point-to-point, 1K VDC to logic
Noise Rejection:
Series Mode: >60dB
Common Mode: >130dB at 120VAC
Burnout Detection:
Configurable for upscale, downscale, defined value, or none
Faulty thermocouple detection for resistance >100Ω
Accuracy:
Factory Configured: ±0.1% of range (±0.2% for 0-10V, -10V to 10V)
Cold Junction Accuracy: ±0.7°C
Field Calibration: ±0.05% of range
Temperature Drift: ±0.01% of full scale per °C
Update Rate: 500ms (A/D Converter per module)
Resolution: 15 bits
Long-term Stability: ±0.1% per year
Power Requirements
5V Supply: 40mA Max
24V Supply: 25mA Max
Dimensions & Weight
Height: 137mm (5.4”)
Width: 35.6mm (1.4”)
Weight: 210g
Applications
Process Control & Industrial Automation
Temperature & Voltage Monitoring
Factory Equipment & Machinery Control
The Honeywell 900A01-0002 Universal Analog Input Module provides high accuracy, fast response times, and exceptional noise rejection, making it an excellent choice for industrial-grade analog signal processing.
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