Honeywell 900A01-0002 | Universal Analog Input Module

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.