Allen-Bradley 1771-A3B PLC-5 12-Slot I/O Chassis
$123.00
$320.00
Description
Allen-Bradley 1771-A3B PLC-5 12-Slot I/O Chassis
The Allen-Bradley 1771-A3B serves as the primary 1771-A3B I/O Chassis utilized to execute module mounting, backplane power distribution, and parallel bus connection across PLC-5 I/O platforms. The chassis provides twelve module slots for installation of compatible Bulletin 1771 digital, analog, and specialty modules.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-A3B |
| Brand | Allen-Bradley / Rockwell Automation |
| Origin | USA |
| Weight | 13.01 lbs |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Backplane current capacity: 24 A at 5 VDC |
| Product Line | PLC-5 |
| Module Type | I/O Chassis |
| Number of Slots | 12 I/O Slots |
| Backplane Type | 1771 Parallel Backplane |
| Maximum Backplane Current | 24 A at 5 VDC |
| Mounting Type | Panel Mount / Rack Mount |
| Enclosure Type | Open Style |
| Compatible Modules | Bulletin 1771 I/O Modules |
| Operating Shock | 15 g |
| Non-Operating Shock | 30 g |
| Vibration Rating | 2 g at 10-500 Hz |
| Relative Humidity | 5-95% non-condensing |
| Assembly Type | Stand-Alone I/O Chassis Assembly |
PLC-5 Backplane Bus and I/O Density Scaling
The 1771-A3B chassis provides a physical mounting structure and electrical backplane interface for PLC-5 controller systems. The 12-slot configuration supports increased I/O density scaling by allowing installation of multiple Bulletin 1771 modules within a single rack assembly.
The chassis uses the PLC-5 parallel backplane bus for module communication and power distribution. Compatible modules exchange data through the backplane architecture while receiving operating power from the installed system power supply configuration.
The 1771-A3B supports industrial control rack installations requiring deterministic backplane communication behavior and compatibility with legacy PLC-5 module configurations.
Frequently Asked Questions
Q: How many I/O modules can be installed in the 1771-A3B chassis?
A: The 1771-A3B provides twelve I/O module slots for compatible Bulletin 1771 PLC-5 modules.
Q: Does the 1771-A3B include an integrated power supply?
A: No. The chassis provides backplane connection and module mounting. System power is supplied through the configured PLC-5 power supply arrangement.
Q: What type of mounting is supported by the 1771-A3B?
A: The chassis supports panel mounting and rack mounting using the provided mounting features.
Field Installation Guidelines
Install the 1771-A3B chassis on a rigid panel surface with proper mechanical support. Verify chassis alignment before inserting I/O modules to prevent damage to backplane connectors.
Connect the chassis according to PLC-5 system power and grounding requirements. Ensure the backplane power capacity is suitable for the installed module configuration.
Route field wiring separately from high-voltage and high-current conductors. Use appropriate cable shielding and grounding practices for analog or noise-sensitive signals.
Maintain environmental protection according to the open-style enclosure design. Avoid installation locations with excessive dust, moisture, or conductive contaminants.
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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