Honeywell 900A01-0202 Universal Analog Input Module

Honeywell 900A01-0202 Universal Analog Input Module

The 900A01-0202 is a Universal Analog Input module from Honeywell. It provides 8 isolated channels for versatile sensor connection including thermocouples, RTDs, and voltage/current signals.

Technical Specifications

• Brand & Model: Honeywell 900A01-0202
• Product Type: Universal Analog Input Module
• Channels: 8 isolated input channels
• Signal Types: T/C, RTD, mA, mV, V, Ohms
• Isolation: 400 VDC point-to-point, 1k VDC to logic
• Resolution: 15-bit A/D converter
• Update Rate: 500 ms per module

Input Specifications

• Thermocouple: Supported with cold junction compensation
• RTD: PT100 3-wire (40 ohms max balanced)
• Input Impedance:
  • 10 MΩ for T/C, mV
  • >1 MΩ for Volts
  • 250 Ω for mA
• Burnout Detection: Configurable per channel (upscale/downscale/defined value)
• T/C Break Detection: Via current pulse; warning if >100 ohms

Accuracy & Performance

• Base Accuracy: ±0.1% of range (except 0/±10V: ±0.2%)
• Cold Junction Accuracy: ±0.7°C
• Temperature Effect: ±0.01% of FS per °C max
• Noise Rejection: >60dB series mode, >130dB common mode
• Long-term Stability: 0.1% per year
• Over-range Limit: ±10% for linear, ±1% for non-linear ranges

Features

• Per-channel configuration (type, burnout)
• Redundant factory calibration stored in non-volatile memory
• Synchronized A/D conversion with CPU execution
• LED status indicators (green scan, red fault)
• Monitoring of 24V supply and configuration

Typical Applications

• Process temperature monitoring
• Pressure and flow measurement
• Multi-sensor data acquisition systems

Packaging & Shipping

• New unit in factory packaging
• Worldwide shipping via FedEx, UPS, DHL

FAQ

• What sensors does it support? Thermocouples, RTDs (PT100), 4-20mA, mV, voltage, resistance.
• Isolation rating? 400VDC between points, 1000VDC to logic/backplane.
• Update speed? 500ms for all 8 channels (module scans in parallel).
• T/C break detection? Yes, provides warning before complete failure.
• Configuration storage? Channel config stored in non-volatile memory.

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