Allen-Bradley 1771-A1B/B PLC-5 4-Slot I/O Chassis
$123.00
$320.00
Description
Allen-Bradley 1771-A1B/B PLC-5 4-Slot I/O Chassis
The Allen-Bradley 1771-A1B/B, also cataloged as the 1771-A1B/B I/O Chassis, operates as a dedicated hardware component for PLC-5 module mounting, backplane signal distribution, and power routing within Bulletin 1771 I/O systems. The chassis provides four I/O slots with a parallel backplane interface for digital, analog, and specialty modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-A1B/B |
| Brand | Allen-Bradley / Rockwell Automation |
| Origin | USA |
| Weight | 7.75 lbs |
| Dimensions | 355 x 165 x 140 mm |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Dependent on installed modules; supports up to 16 A backplane current at 5 VDC |
| Product Line | PLC-5 / Bulletin 1771 |
| Module Type | I/O Chassis |
| Number of Slots | 4 I/O Slots |
| Backplane Type | 1771 Parallel Backplane |
| Power Supply Requirement | External 1771-P series power supply |
| Mounting Type | Panel Mount |
| Enclosure Style | Open Type |
| Communication Options | Local I/O, Remote I/O via 1771-ASB, ControlNet via 1771-ACN15 |
| Operating Shock | 15 g |
| Non-Operating Shock | 30 g |
| Vibration Rating | 2 g at 10-500 Hz |
| Storage Temp | -40 to 85 deg C |
PLC-5 Backplane Architecture and I/O Integration
The 1771-A1B/B chassis provides the mechanical structure and electrical backplane connection required for PLC-5 I/O modules. The parallel backplane supports module-to-processor data exchange and distributes power connections from the external 1771-P series power supply.
The chassis supports I/O density scaling through installation of compatible 1771 digital, analog, and specialty modules. The PLC-5 architecture uses deterministic backplane bus communication behavior for local and remote I/O configurations, including installations using 1771-ASB adapters.
The open chassis construction requires proper panel installation practices and protection from environmental contaminants according to the application enclosure requirements.
Frequently Asked Questions
Q: How many modules can be installed in the 1771-A1B/B chassis?
A: The 1771-A1B/B chassis provides four I/O module slots for compatible Bulletin 1771 modules.
Q: Does the 1771-A1B/B contain an integrated power supply?
A: No. The chassis requires an external 1771-P series power supply for backplane power distribution.
Q: What type of communication interface does the chassis provide?
A: The chassis uses the PLC-5 1771 parallel backplane interface and supports local I/O or remote configurations through compatible adapters.
Field Installation Guidelines
Install the 1771-A1B/B chassis on a rigid panel surface using appropriate mechanical mounting hardware. Verify chassis alignment before inserting I/O modules to prevent connector damage.
Connect the external 1771-P series power supply according to the applicable PLC-5 system wiring requirements. Confirm backplane power availability before module installation.
Route I/O wiring separately from high-voltage and high-current conductors. Use shielded cables for noise-sensitive analog signals and terminate shields according to site grounding standards.
Maintain adequate clearance around the open-style chassis to allow inspection, module replacement, and airflow within the control enclosure.
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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