Overview
The Allen Bradley 1746-N2 is a slot filler module designed for the SLC 500 platform. Its primary function is straightforward but essential: it occupies empty chassis positions to maintain proper airflow, protect the backplane connectors, and ensure electrical integrity inside the control cabinet.
From a practical installer’s perspective, using 1746-N2 prevents dust entry, accidental contact, and exposure / unused backplane terminals—issues that can lead to intermittent failures or long-term degradation. Although passive in function, it is a critical component for maintaining a healthy SLC system.
Technical Specifications
| Parameter | 説明 |
|---|---|
| モデル Number | 1746-N2 |
| Module Type | Slot Filler / Blank Module |
| Platform Compatibility | Allen Bradley SLC 500 |
| Function | Protects unused chassis slots and backplane connectors |
| Backplane Connection | Passive (no electrical circuitry) |
| Material | Molded industrial-grade enclosure with SLC locking tabs |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | –40°C to +85°C |
| Dimensions (H × W × D) | ≈ 140 mm × 35 mm × 150 mm |
| 重量 | ≈ 0.20 kg |
Applications
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Protecting exposed slots in partially populated SLC 500 chassis
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Maintaining proper airflow for heat-sensitive CPU and I/O modules
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Preventing debris or contamination from entering unused positions
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Providing mechanical stability inside control panels with vibration
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Ensuring long-term reliability / older SLC installations during staged upgrades
Advantages
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Prevents contamination: Shields backplane contacts from dust and moisture.
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サポートs thermal management: Helps maintain correct airflow paths inside the chassis.
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Improves mechanical safety: Reduces risk / accidental insertion or physical damage.
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Easy installation: Snaps into place like any standard SLC module.
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Long-term reliability: Passive design with no components to fail.
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