Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 900A16-0001 |
| Manufacturer | Honeywell |
| Product Type | High-Level Analog Input (HLAI) Module |
| Compatible System | Honeywell ControlEdge HC900 Controller |
| Input Channels | 16, single-ended |
| Supported Signals | 0-20 mA, 4-20 mA, 0-5 V, 1-5 V, 0-10 V, ±5 V, ±10 V |
| A/D Resolution | 16 bit |
| Accuracy | ±0.05% FS typical / ±0.1% FS max |
| Input Impedance | >1 MΩ (voltage mode); 250 Ω (current mode) |
| Isolation | 8 channels/group, 400 VDC group-to-group; 1 kVDC channel-to-backplane |
| CMRR | >90 dB @ 120 VAC, 50/60 Hz |
| Update Rate | 100 ms (module level) |
| Power Consumption | 5 VDC ≤75 mA; 24 VDC ≤50 mA |
| Operating Temperature | 0°C to +60°C |
| Dimensions | 135 mm × 53.6 mm × 105 mm (approx.) |
| Weight | Approximately 0.42 kg |
Main Features and Advantages
High-density signal acquisition: The 900A16-0001 packs 16 analog input channels into a single HC900 rack slot, reducing cabinet footprint and wiring complexity compared to lower-density alternatives. This density is particularly valuable in large process facilities where hundreds of analog points must be monitored within constrained control room space.
Configurable per-channel input ranges: Each channel on the 900A16-0001 can be independently software-configured for current or voltage operation, covering standard process signals from 4-20 mA transmitters as well as direct voltage sources. This flexibility eliminates the need for external signal conditioning or range-specific module variants, simplifying spares inventory and system design.
Robust isolation architecture: The 900A16-0001 employs 8-channel group isolation with 400 VDC group-to-group withstand capability and 1 kVDC channel-to-backplane isolation. This design prevents ground loops and common-mode voltages from corrupting measurements across channels, ensuring signal integrity even when field transmitters are grounded at different reference potentials.
Comprehensive diagnostics: The 900A16-0001 performs continuous open-circuit detection and signal quality validation on each channel, flagging sensor faults and loop failures to the controller in real time. This diagnostic capability reduces troubleshooting time and supports predictive maintenance by identifying degrading field instruments before they cause process disruptions.
HART communication support: For 4-20 mA loops, the 900A16-0001 accommodates HART digital signals superimposed on the analog current, allowing configuration and diagnostic access to smart transmitters without additional hardware or dedicated communication modules.
