Honeywell 900A01-0202 Universal Analog Input Module | 900 Series AI

Description

Product Overview

• Brand: Honeywell
• Model: 900A01-0202
• Series: 900 Control Series
• Type: Universal Analog Input Module
• The 900A01-0202 handles many sensor types.
• Each channel is user configurable.
• Isolation improves safety and signal quality.
• Parallel processing avoids scan delays.

Key Advantages

• Supports eight isolated input points.
• Works with temperature and electrical signals.
• Fast data update improves control response.
• Early sensor warning reduces downtime.
• LEDs give clear module status.

Supported Signal Types

• Thermocouples with cold junction sensing.
• RTD and PT100 three-wire sensors.
• Resistance and low-ohm measurements.
• Voltage and millivolt inputs.
• Current loops up to 20 mA.

Electrical Performance

• Input impedance up to 10 MΩ for mV.
• 250 Ω precision shunt for current signals.
• Point isolation rated at 400 VDC.
• Logic isolation rated at 1000 VDC.
• Series noise rejection exceeds 60 dB.
• Common mode noise rejection exceeds 130 dB.

Measurement Quality

• Accuracy reaches ±0.1 percent of range.
• Cold junction error stays within ±0.7 °C.
• Resolution equals 15-bit conversion.
• Update rate is 500 milliseconds.
• Long term drift stays below 0.1 percent yearly.

Diagnostics & Protection

• Detects broken thermocouples automatically.
• Warns before sensor failure occurs.
• Monitors power and configuration health.
• Burnout response is channel selectable.

Installation & Maintenance

• Fits standard Honeywell 900 racks.
• No field calibration required.
• Settings remain saved after power loss.
• Module swap causes minimal disruption.

Typical Applications

• Process temperature monitoring.
• Chemical and refinery control systems.
• Power plant instrumentation.
• Water and wastewater automation.

Shipping & Warranty

• Standard warranty period is 12 months.
• Global delivery via FedEx, UPS, or DHL.

Professional FAQ

• How does this module reduce wiring noise?
• Isolation per channel blocks ground loops.
• Is this suitable for mixed signal projects?
• Yes. Each input supports a different sensor.
• What helps accuracy in long-term use?
• Factory calibration stays stored in memory.
• How do engineers choose between RTD types?
• Match sensor resistance to process range needs.
• What should buyers confirm before purchase?
• Check rack type and required signal mix.

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