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Frequently inquire Together
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InquiryDescription
The Allen‑Bradley 1794‑TB3GS is a FLEX I/O terminal base unit designed for secure field‑signal termination and module mounting within FLEX I/O architectures. It provides a grounded shield‑terminal design (GS type) for improved noise immunity in harsh industrial environments.
Specifications
| Parameter | Specification |
|---|---|
| Model | 1794‑TB3GS |
| Brand | Allen‑Bradley / Rockwell Automation |
| Series | FLEX I/O |
| Origin | United States |
| Terminal Type | 36‑pin grounded shield terminal base |
| Grounding | Integrated shield‑ground bar (GS type) |
| Mounting | DIN‑rail FLEX I/O base |
| Wiring Method | Screw‑clamp terminals |
| Module Compatibility | All FLEX I/O digital, analog, and specialty modules |
| Product Type | Terminal Base Unit |
Functional Description
The 1794‑TB3GS terminal base unit provides the mechanical and electrical interface between FLEX I/O modules and field wiring. As a GS‑type base, it includes an integrated shield‑ground bar to improve noise immunity for analog and high‑speed digital signals. The screw‑clamp terminals support secure conductor retention, making the base suitable for vibration‑exposed industrial panels.
The base routes field signals to the FLEX I/O backplane, enabling distributed I/O architectures for PLC and PAC systems. It supports all FLEX I/O module types, including analog input/output, digital input/output, specialty modules, and extended‑temperature variants.
Frequently Asked Questions
Q: What does “GS” mean in 1794‑TB3GS? GS indicates a grounded shield terminal base with an integrated shield‑ground bar.
Q: Is 1794‑TB3GS compatible with all FLEX I/O modules? Yes. It supports all FLEX I/O analog, digital, and specialty modules.
Q: What wiring method does the base use? It uses screw‑clamp terminals for secure conductor retention.
Q: Can it be used in noisy environments? Yes. The GS grounding design improves noise immunity for sensitive signals.
Field Installation Guidelines
- Maintain shield continuity using the integrated GS grounding bar.
- Ensure screw‑clamp terminals are fully tightened to prevent vibration‑related loosening.
- Route analog and high‑speed digital wiring separately from high‑current conductors.
- Verify correct alignment of the FLEX I/O module before snapping into the base.
- Inspect terminal surfaces for contamination or oxidation before installation.
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