Allen-Bradley 1794-TB3GM FLEX I/O Terminal Base Unit
$123.00
$320.00
Description
Allen-Bradley 1794-TB3GM FLEX I/O Terminal Base Unit
Configured for 3-wire field device termination in FLEX I/O backplane systems, the Allen-Bradley 1794-TB3GM (1794-TB3GM Terminal Base Unit) provides direct physical/electrical execution for I/O module wiring, power routing, and communication connection through the FLEX I/O backplane bus.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1794-TB3GM |
| Brand | Allen-Bradley |
| Origin | United States |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption | Passive terminal base; no external power consumption |
| Product Family | FLEX I/O |
| Terminal Type | Spring-clamp connection |
| Termination Style | 3-wire (Signal, V/Common, Ground) |
| Number of Terminals | 36 I/O terminals (16 Signal, 18 Common/Voltage, 2 Ground) |
| Voltage Rating | 125 V AC/DC maximum |
| Current Capacity | 10 A maximum through terminal strip |
| Wire Size Range | 0.33 to 1.3 mm2 (22 to 16 AWG) solid or stranded copper wire |
| Wire Strip Length | 9.5 mm +/- 1.0 mm |
| Keyswitch Positions | 1 through 12 configurable based on attached I/O module |
| Mounting Method | 35 mm DIN rail or panel/wall mount |
| Enclosure Type | Open-style |
| Relative Humidity | 5% to 95% non-condensing |
Profinet / EtherNet-IP Deterministic Networks and I/O Density Scaling
The 1794-TB3GM operates as a FLEX I/O terminal base component within Allen-Bradley distributed I/O architectures. The unit provides the mechanical interface and electrical routing path between field wiring and FLEX I/O modules through the terminal base backplane connection.
The 3-wire terminal arrangement supports separate signal, common/voltage, and grounding connections for field devices such as proximity sensors, analog transmitters, and actuators requiring chassis ground reference. The spring-clamp termination method maintains conductor retention without screw torque adjustment.
The mechanical keyswitch system provides module type identification by configurable key positions from 1 through 12, preventing installation of incompatible FLEX I/O modules into the terminal base assembly.
Frequently Asked Questions
Q: Does the 1794-TB3GM provide active signal processing or power conversion?
A: No. The 1794-TB3GM is a passive terminal base unit providing field wiring termination, module mounting, and backplane connection functions.
Q: What hot-swap limitations apply to the terminal base unit?
A: The terminal base unit must be installed according to FLEX I/O system procedures. Module removal or replacement conditions depend on the installed I/O module and system operating requirements.
Q: Can multiple terminal bases share power and common connections?
A: Yes. The unit supports daisy-chain wiring arrangements for power and common connections between adjacent terminal bases when configured according to system wiring requirements.
Field Installation Guidelines
Install the 1794-TB3GM on a compatible 35 mm DIN rail or approved panel mounting surface. Verify that the terminal base keyswitch position matches the intended FLEX I/O module before module insertion.
Terminate field conductors according to the specified wire size range and maintain correct separation between signal wiring, common connections, and grounding conductors. Use appropriate cabinet grounding practices and connect shield drain wires according to the system grounding design.
Route communication and power wiring separately from high-voltage switching conductors to reduce electrical interference. Confirm that all spring-clamp terminals are fully engaged and that conductors are securely retained before system energization.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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