Product Introduction: Honeywell 900A16-0103 High Level Analog Input Module
When precision and system uptime are nonnegotiable, the Honeywell 900A16-0103 delivers reliable performance across demanding industrial environments. This High Level Analog Input module supports up to 16 user-configurable inputs for voltage or current, with point-to-point and backplane isolation. The 900A16-0103 performs analog-to-digital conversion in synchronization with CPU execution, eliminating data interchange latency. Modules process in parallel, so scan time remains constant as you add channels. A blinking green LED indicates active scanning, while a red LED signals module or channel diagnostics—helping maintenance teams quickly identify issues and reduce downtime.
Technical Specifications
The Honeywell 900A16-0103 offers a robust set of performance parameters designed for high-accuracy measurements and long-term stability.
| Specification |
Value |
| Inputs per module |
16 (isolated) |
| Input types |
V, mA |
| Input impedance |
>1 megohm for volts; 250 ohms for mA |
| Galvanic input isolation |
400 VDC point-to-point, solid state; 1 kVDC to logic |
| Noise rejection (series mode) |
>31 dB |
| Noise rejection (common mode) |
>90 dB at 120 VAC |
| Over-range limit |
±10% for linear ranges (volts) |
| Accuracy (factory configured) |
±0.1% of range |
| A/D resolution |
±15 bits |
| Update rate |
100 ms |
| Temperature effect on accuracy |
±0.01% of full scale per °C max |
| Long-term stability |
0.1% per year |
| Calibration |
Stored in non-volatile memory; redundant factory calibration |
| Diagnostics |
Monitors factory calibration, 24 VDC supply, configuration |
These specifications enable the 900A16-0103 to maintain exceptional precision over temperature and time, reducing recalibration costs and extending service intervals.
Applications
The Honeywell 900A16-0103 suits a range of industrial control tasks where accurate analog signal acquisition is critical. Typical use cases include:
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Process control – monitoring temperature, pressure, and flow transmitters in chemical or petrochemical plants. The 16 isolated inputs prevent ground loops and protect sensitive signals.
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Manufacturing automation – reading linear position or load cell signals from machining stations. Fast 100 ms update rates and parallel processing keep line speeds high.
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Utilities – acquiring voltage and current data from substation sensors. Galvanic isolation (400 VDC point to point) ensures reliable operation in high-EMI environments.
Maintenance & Reliability
Routine maintenance of the Honeywell 900A16-0103 is straightforward. The module’s built-in diagnostics monitor factory calibration, 24 VDC supply, and configuration – flagging potential issues via the red status LED before they cause measurement errors. For long-term reliability, the module stores channel configuration in non-volatile memory, so settings persist after power loss. With ±0.01% per °C thermal stability and 0.1% annual drift, the 900A16-0103 requires infrequent recalibration. Periodic inspection of the 24 VDC supply voltage and cleaning of module connectors will maintain optimal performance over many years.
Selection Guide & Purchasing Advice
When selecting the Honeywell 900A16-0103 for your system, verify that your backplane supports the module’s power requirements and form factor. The module requires a 24 VDC supply; confirm adequate amperage for all slots. For more details or to place an order, contact UBEST Automation (available at ubest101.myshopify.com) – a trusted supplier of industrial automation spares and modules.