Allen-Bradley 1756-TBN ControlLogix Removable Terminal Block
$123.00
$320.00
Description
Allen-Bradley 1756-TBN ControlLogix Removable Terminal Block
The Allen-Bradley 1756-TBN, also cataloged as the 1756-TBN Removable Terminal Block, operates as a dedicated hardware component for field wiring termination within ControlLogix I/O module platforms. The RTB provides a 20-position screw-clamp interface between external wiring and compatible ControlLogix digital or analog I/O modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-TBN |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.3 lb |
| Dimensions | 5.51 x 4.41 x 5.71 in |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Maximum 6.19 W |
| Product Type | Removable Terminal Block |
| Product Line | ControlLogix |
| Connection Method | Screw-clamp terminal connection |
| Number of Positions | 20-pin |
| Compatible Modules | ControlLogix digital and analog I/O modules requiring RTB interface |
| Backplane Current (5 VDC) | 1200 mA |
| Backplane Current (24 VDC) | 2.5 mA |
| Enclosure Rating | Open-style, no enclosure |
| Screw Torque | 0.8-1 N m (7-9 lb in) |
| Certifications | UL Listed, ControlLogix system certified |
ControlLogix I/O Interface and Installation Characteristics
The 1756-TBN provides the physical termination interface between field conductors and ControlLogix I/O modules. The removable terminal block design allows field wiring to remain connected during module replacement procedures when compatible system configurations are used.
The terminal block supports I/O density scaling within ControlLogix chassis installations by providing a standardized connection point for multiple signal conductors. Proper terminal tightening torque and conductor preparation are required to maintain electrical contact integrity.
The component operates as part of the ControlLogix hardware architecture where module compatibility and firmware configuration are managed through the associated I/O module and controller system.
Frequently Asked Questions (FAQ)
Q: What type of connection does the 1756-TBN provide?
A: The 1756-TBN uses a screw-clamp terminal connection with 20 positions for field wiring termination.
Q: Can the 1756-TBN be used with all ControlLogix I/O modules?
A: The RTB is compatible with ControlLogix digital and analog I/O modules that require this terminal block type. Module-specific RTB compatibility should be verified before installation.
Q: What are the specified backplane current values associated with this terminal block?
A: The specified values are 1200 mA at 5 VDC and 2.5 mA at 24 VDC.
Field Installation Guidelines
Install the 1756-TBN on compatible ControlLogix I/O modules by aligning the terminal block with the module interface and securing the connection according to the hardware installation procedure.
Terminate field conductors using the correct wire preparation method and apply the specified screw tightening torque to prevent loose connections. Avoid excessive mechanical force on terminal points and wiring conductors.
Route signal wiring separately from high-current power cables and switching circuits where required by the control panel design. Apply appropriate shielding and grounding practices for analog or noise-sensitive signals.
Before system operation, verify terminal assignments, I/O module configuration, and field wiring continuity through the ControlLogix engineering environment.
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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