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Honeywell 80363972-150
Product Name: UCN / TDC 3000 Digital Input Module (24 VDC)
Introduction: The 80363972-150 is a high-density digital input module for the Honeywell TDC 3000 and Experion PKS distributed control platforms. Supplier listings describe it with either 16 or 32 input channels; the -150 hardware revision features updated conformal coating and enhanced EMI shielding versus earlier -100 and -125 suffixes, making it suitable for high-humidity and electrically noisy environments.
Detailed content
Technical Specifications:
- Input Type: 24 VDC wet-contact discrete input
- Channel Density: 16 or 32 channels depending on listing (typically 32 channels per board per newer listings)
- Input Voltage Range: 18–30 VDC (nominal 24 VDC)
- Input Current: ≤ 8 mA per channel at 24 VDC
- Logic High Threshold: ≥ 11 VDC
- Logic Low Threshold: ≤ 5 VDC
- Isolation: 500 VAC optical isolation, channel-to-backplane
- Input Impedance: ~3 kΩ per channel
- Scan Rate: Synchronized with controller I/O Link cycle (typically 100–500 ms)
- Power Consumption: ≤ 3.5 W from backplane 5 VDC rail
- Operating Temperature: 0°C to +60°C
- Storage Temperature: –40°C to +85°C
- Relative Humidity: 5–95% RH, non-condensing
- Connector: 40-pin DIN backplane connector; field wiring via 40-terminal FTA
- Indicators: Per-channel green LEDs; red module-fault LED
- Certifications: FM Class I Div 2, ATEX Zone 2, CE, RoHS
Features: Optically isolated inputs protect the controller from field-side surges. Conformal coating meets ISA-71.04 Class G2 corrosive atmosphere. Compatible with standard TDC 3000 I/O Link or Experion C200/C300 chassis. Supports both sinking and sourcing field device wiring.
Applications: Monitoring ESD pushbuttons and fire/gas detectors in oil & gas, sensing limit-switch states on automated valves in chemical plants, tracking breaker status in power generation, receiving proximity and photo-eye signals in manufacturing, and reading level switches and pump-run feedback in water treatment.
Working Principle: Raw 24 VDC field signals pass through opto-couplers that convert them into 5 V logic for the High Level Process Manager. The optical barrier blocks high-voltage transients and electrical noise. The controller scans the resulting logic states on each I/O Link cycle.
Installation Requirements: Power down the I/O rack per site safety protocols. Align the board with the card guides and press firmly into the backplane connector. Wire the 24 VDC field signals to the corresponding FTA. Confirm the common return path is properly grounded to avoid floating signals. Verify bit-status changes in the Honeywell Native Window or Experion Station when toggling a field device.
Precautions: This module is not interchangeable with analog input variants (e.g., 80363969-150) nor with the digital output module (80363973-150). Periodically check for “Channel Fail” soft alarms which may indicate a blown FTA fuse. Do not apply 120 VAC to the input terminals.
