Honeywell 8937-HN2 Fiber Optic Extender Module
Honeywell 8937-HN2 Fiber Optic Extender Module
Configured for long‑distance I/O signal extension in Experion Series 8 and C300 networks, the Honeywell 8937-HN2 (8937-HN2 fiber optic extender module) provides direct physical/electrical execution for remote I/O connectivity over multi‑mode fiber.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8937-HN2 |
| Brand | Honeywell |
| Origin | USA |
| Weight | Not specified |
| Dimensions | Not specified |
| Operating Temp | –40 deg C to +85 deg C |
| Power Consumption | Not specified |
| Platform Compatibility | Experion Series 8, C300 controllers |
| Fiber Type | Multi‑mode |
| Maximum Distance | Up to 2 km |
| Coating | G3 conformal coating |
| Function | Remote I/O extension and redundant fiber link support |
4-20 mA HART Loop Protocol & Channel Isolation
The module aligns with Honeywell’s process‑control architecture, supporting stable transport of 4-20 mA HART loop data when paired with remote I/O hardware. Channel‑to‑channel isolation prevents interference between adjacent optical paths, maintaining deterministic behavior across extended distances. The isolation design also mitigates electrical noise ingress from field wiring, ensuring consistent signal integrity under harsh plant conditions.
Frequently Asked Questions
Q: Does the module support hot‑swap replacement? A: The module behavior depends on the host chassis. If the backplane supports live insertion, the extender can be replaced without full system shutdown, but fiber links must be de‑energized during handling.
Q: How does redundant link switching occur? A: When dual fiber paths are configured, the module monitors link continuity and transitions to the secondary path upon loss of signal. The switchover delay is governed by the controller’s link supervision cycle.
Q: Are firmware updates required for compatibility? A: The extender itself does not contain user‑upgradeable firmware. Compatibility is determined by the controller firmware revision and remote I/O configuration rules.
Field Installation Guidelines
Install the module in a clean, dry enclosure with adequate airflow. Maintain minimum bend radius for multi‑mode fiber and avoid routing fiber parallel to high‑voltage conductors. Ensure proper termination and polishing of fiber connectors to reduce insertion loss. Ground shielded copper cables at a single point to prevent ground loops. Verify link continuity using optical test equipment before commissioning.
Honeywell 8937-HN2 Fiber Optic Extender Module
