Products Description
| Company Information | |||
| [email protected] | |||
| Mobile | +8613950166376 | ||
| +8613950166376 | |||
| 13950166376 |
Technical Specifications
| Parameter | Details |
|---|---|
| Product Name | Allen-Bradley 1794-TB3S |
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Series | FLEX I/O 1794 |
| Product Type | Terminal Base Unit |
| Function | Field wiring interface + FlexBus backplane connection |
| Wiring Method | Spring clamp (cage clamp) terminals |
| Supported Modules | Digital, analog, and specialty FLEX I/O modules |
| Terminal Capacity | Typical 16 I/O + common + voltage distribution terminals |
| Field Voltage Rating | 24 VDC / 120–125 VAC systems |
| Field Current Rating | Up to 10 A |
| FlexBus Rating | 5 VDC backplane, up to ~640 mA |
| Isolation Voltage | 125 V continuous field-to-backplane isolation |
| Wire Size | 0.34–3.3 mm² (AWG 22–12) |
| Torque / Wiring | Tool-less spring clamp, no torque required |
| Mounting Type | DIN rail |
| Enclosure Rating | IP20 (open-style) |
| Operating Temperature | -20 to 70 °C |
| Humidity | 5–95% non-condensing |
| Dimensions | ~94 × 94 × 69 mm |
| Net Weight | ~0.2–0.23 kg |
FAQ
FAQ
Q1. What is the main function of 1794-TB3S?
It is a FLEX I/O terminal base used to connect field wiring to FLEX I/O modules and provide FlexBus backplane communication.
Q2. What does the “S” mean in TB3S?
It stands for Spring Clamp, meaning it uses cage-clamp terminals for faster wiring and better vibration resistance.
Q3. What is the difference between TB3 and TB3S?
- TB3: screw clamp terminals
- TB3S: spring clamp terminals (no screwdriver needed)
Q4. What modules are compatible with TB3S?
It is used with most FLEX I/O modules (digital, analog, relay, specialty), especially 16-point and 32-point types depending on configuration.
Q5. Does TB3S process signals?
No. It only provides wiring and backplane connection. All signal processing is done by the I/O module.
Q6. What is FlexBus?
FlexBus is the internal backplane that carries power and communication between the terminal base and the module.
Q7. Can modules be replaced while powered?
Yes, FLEX I/O supports RIUP (Removal and Insertion Under Power) depending on system design.
Q8. What environments is TB3S suitable for?
It is rated for standard industrial environments, typically -20 °C to 70 °C, and is widely used in machine and process automation systems.
Tags
Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
