Allen-Bradley 1797-TB3 Terminal Base Unit
$123.00
$320.00
Description
Allen-Bradley 1797-TB3 Terminal Base Unit
Configured for FLEX Ex I/O module field wiring and signal routing in FLEX Ex I/O systems, the Allen-Bradley 1797-TB3 (1797-TB3 Terminal Base Unit) provides direct physical/electrical execution through terminal connections and the Flex Ex backplane interface.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1797-TB3 |
| Brand | Allen-Bradley |
| Weight | 0.49 lb |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption | Not specified |
| Product Line | FLEX Ex I/O |
| Terminal Type | 3-tier Cage Clamp / Screw Terminals |
| Number of Terminals | 36 terminals |
| I/O Module Capacity | 1 FLEX Ex I/O module per base |
| Maximum Voltage | 10 VDC to 30 VDC |
| Maximum Current Capacity | 10 A |
| Wire Size Range | 0.33 to 2.5 mm2 (22 to 12 AWG) solid or stranded copper wire |
| Wiring Torque | 0.5 to 0.6 Nm |
| Protection Rating | IP20 (NEMA Type 1) |
| Mounting Method | 35 x 7.5 mm DIN rail or direct panel mount |
| Storage Temperature | -40 deg C to +85 deg C |
| Relative Humidity | 5% to 95% non-condensing |
| Keying Positions | 8-position mechanical keying |
EtherNet/IP Deterministic Network and Firmware Flash Compatibility
The Allen-Bradley FLEX Ex platform uses structured hardware identification and configuration management for I/O assemblies. The 1797-TB3 provides the physical base connection required for FLEX Ex I/O modules, allowing module-specific firmware compatibility checks and controller configuration validation during system maintenance activities. The terminal base routes power and backplane signals without providing independent processing or communication functions.
Frequently Asked Questions
Q: Can the 1797-TB3 support multiple FLEX Ex I/O modules on one terminal base?
A: No. The 1797-TB3 is designed for one FLEX Ex I/O module per terminal base unit.
Q: What wiring connection method is used on the 1797-TB3?
A: The unit uses 3-tier Cage Clamp / screw terminal connections for field wiring termination.
Q: Does the 1797-TB3 provide active signal processing or control logic?
A: No. The 1797-TB3 is a passive terminal base unit that provides mounting, wiring termination, and Flex Ex backplane routing functions.
Field Installation Guidelines
Install the 1797-TB3 on a compatible DIN rail or panel mounting surface according to the mechanical installation requirements of the FLEX Ex system.
Use copper field wiring within the specified conductor size range and maintain correct terminal tightening torque during installation. Separate signal wiring from high-voltage power conductors to reduce electrical interference.
Verify the mechanical keying position before inserting a FLEX Ex I/O module. Confirm terminal assignments, module orientation, and backplane engagement before applying system power.
For hazardous area installations, follow the applicable intrinsic safety system design rules, enclosure requirements, grounding practices, and local electrical regulations
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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