1771-EZ Allen-Bradley I/O Extender
$123.00
$320.00
Description
Allen-Bradley 1771-EZ I/O Extender Module
Configured for I/O chassis expansion in PLC-1771 Universal I/O systems, the Allen-Bradley 1771-EZ (1771-EZ I/O Extender Module) provides direct physical backplane extension and communication execution between the processor or adapter interface and additional I/O modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-EZ |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 2.00 lbs |
| Power Consumption | Draws power from chassis backplane; consumption not specified |
| Module Type | I/O Extender Module |
| Compatibility | Allen-Bradley PLC-1771 Universal I/O chassis |
| Addressing Modes | 1-slot, 2-slot, and 1/2-slot addressing |
| Communication | Extended backplane communication for additional I/O modules |
| Installation Type | Extender slot mounting |
| Isolation | Electrical isolation and filtering circuits |
| Indicators | Front-panel LED status indicators |
Backplane Communication and I/O Density Scaling
The 1771-EZ provides chassis expansion capability by extending PLC-1771 backplane communication paths to additional I/O module assemblies. The module supports I/O density scaling by allowing additional modules to be integrated while maintaining processor-to-module data exchange through the extended backplane interface.
The extender module follows Allen-Bradley PLC architecture requirements for backplane bus communication and supports system configurations using different addressing modes. Electrical isolation and filtering circuits are implemented to reduce interference effects between connected control hardware.
Frequently Asked Questions
Q: What function does the 1771-EZ perform in a PLC-1771 system?
A: The 1771-EZ extends the I/O chassis capacity by providing an additional communication path between the controller system and expanded I/O modules.
Q: Does the 1771-EZ require a separate external power supply?
A: No. The module receives and distributes power through the chassis backplane interface. The total module load must remain within the chassis power supply capacity.
Q: How is incorrect module installation prevented?
A: The PLC-1771 chassis uses mechanical keying elements to prevent incorrect insertion positions during module installation.
Field Installation Guidelines
Install the 1771-EZ in the designated extender slot of the PLC-1771 chassis assembly. Remove system power before inserting or removing the module to prevent backplane electrical disturbances.
Verify that the module connector is properly aligned with the chassis backplane interface. Maintain separation between low-level signal wiring and high-voltage AC wiring to reduce electromagnetic interference.
For systems containing analog input or output modules, apply proper cable shielding and grounding practices. Connect cable shields according to the control system grounding design and avoid parallel routing with high-noise power conductors. Confirm total backplane current demand before adding further I/O modules to the expanded chassis.
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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