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Honeywell FL-20D-22A20-HON16DI
Product Introduction: The FL-20D-22A20-HON16DI is a Honeywell 16-channel digital input (DI) module, as indicated by the “HON16DI” portion of the part number. The “FL-20D” prefix suggests membership in Honeywell’s FL-series I/O family, and “22A20” likely denotes the electrical configuration (e.g., 22 VDC class, 20-channel-class frame with 16 active inputs). Publicly available detailed technical documentation for this specific full part number was not retrieved; the following information is inferred from the part-number coding conventions and Honeywell I/O module families.
Detailed content
Technical Specifications (based on part-number analysis and Honeywell DI module conventions):
- Channels: 16 digital inputs
- Input type: 24 VDC class discrete input (typical for Honeywell “D” Series DI modules)
- Interface: HON (Honeywell proprietary I/O bus interface)
- Module family: FL-20D (FL = Field-Line I/O; 20D = 20 VDC-class, D = Digital)
- Conformal coating: Likely G3 (typical for “8C”/coated variants; “FL” series coating class to be confirmed with Honeywell)
Functional Features (typical for Honeywell 16-channel DI modules):
- 16-channel discrete input acquisition
- Channel-to-system isolation
- Per-channel diagnostics and wire-break detection
- Hot-swap capability (typical of Honeywell Series I/O)
- G3 conformal coating for harsh environments (to be confirmed)
Application Scenarios: Discrete state acquisition from field contact devices — limit switches, push-buttons, motor-starter auxiliary contacts, and ESD valve position feedback — within Honeywell DCS/PLC platforms using the HON I/O interface.
Structural & Material Characteristics: The module follows Honeywell’s standard I/O module form factor with a terminal interface compatible with HON I/O carriers. The PCB is typically conformal-coated for industrial environments.
Working Principle: Field-supplied 24 VDC discrete signals are filtered, optically isolated, and scanned by the onboard I/O processor, then transmitted over the HON I/O bus to the controller.
Installation Requirements:
- Mount on the compatible HON I/O carrier/baseplate
- Provide 24 VDC field power per the carrier’s distribution scheme
- Follow Honeywell’s standard wiring practices for discrete inputs
Usage Notes:
- Important: Detailed technical specifications (exact voltage range, current draw, isolation voltage, accuracy, operating temperature, certification profile) for the FL-20D-22A20-HON16DI were not available in the publicly retrieved Honeywell documentation. Consult the official Honeywell FL-series I/O datasheet or contact Honeywell Industrial Automation technical support for verified parameters before deployment.
- Verify compatibility with the target controller platform (C300, C200, or other Honeywell DCS) prior to installation
