Allen Bradley 1771-OBDS/B Digital DC Output Module
$123.00
$320.00
Description
Allen Bradley 1771-OBDS/B Digital DC Output Module
Configured for discrete DC load switching in PLC-5 1771 I/O chassis systems, the Allen Bradley 1771-OBDS/B (1771-OBDS Digital DC Output Module) provides direct physical/electrical execution through sixteen current-limiting sourcing outputs. The module supports 10-60 VDC field devices with opto-electrical isolation and PLC backplane communication.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-OBDS/B |
| Brand | Allen Bradley |
| Origin | United States |
| Weight | 1.8 lbs |
| Power Consumption | Backplane current: 300 mA at 5 VDC |
| Module Type | Digital DC Output Module |
| Product Line | PLC-5 |
| Number of Outputs | 16 Outputs |
| Output Type | Sourcing DC digital output |
| Voltage Category | 10-60 VDC |
| Operating Voltage Range | 10-40 VDC |
| Maximum Continuous Current Per Output | 1 A |
| Maximum Continuous Current Per Module | 8 A |
| Data Format | BDC or Natural Binary |
| Wiring Arm Compatibility | 1771-WH |
| Isolation | Opto-electrical isolation tested to 1500 V AC rms |
| Protection Feature | Current-limiting output protection |
| Coating | Conformal coating |
| ESD Immunity | 4 kV contact discharge; 8 kV air discharge |
| Mounting Type | Rack mountable |
| Certification | UL Listed |
PLC-5 Digital Output and Protection Architecture
The 1771-OBDS/B provides sixteen individually controlled sourcing DC outputs for PLC-5 control applications. Each output channel supplies current to connected DC field loads and incorporates current-limiting protection for overload and short-circuit conditions.
The module supports PLC-5 backplane bus communication and transfers digital output states from the controller to external devices such as solenoids, relays, pilot lights, and annunciators.
Opto-electrical isolation separates field-side output circuits from internal PLC logic circuitry. The conformal coating provides additional protection for the module electronics during installation in industrial environments.
Industrial Control Backplane Integration
The 1771-OBDS/B follows the Allen Bradley PLC-5 I/O architecture and supports I/O density scaling through 1771 chassis expansion. The module operates as a rack-based component using deterministic backplane communication rather than standalone network addressing.
The module supports BDC and Natural Binary data formats for controller data exchange. System operation requires correct chassis slot configuration, I/O addressing, and PLC-5 processor compatibility.
Firmware flash compatibility is not specified for this PLC-5 hardware generation. Configuration depends on installed hardware revision, controller programming, and chassis setup.
Frequently Asked Questions
Q: How many output channels are available on the 1771-OBDS/B?
A: The module provides sixteen sourcing DC digital output channels.
Q: What DC voltage range is supported by the 1771-OBDS/B?
A: The module supports a 10-60 VDC voltage category with a specified operating range of 10-40 VDC.
Q: What protection functions are included in the output design?
A: Each output channel includes current-limiting protection for overload and short-circuit conditions.
Field Installation Guidelines
Install the 1771-OBDS/B module in a compatible 1771 I/O chassis slot and verify chassis keying before insertion. Connect field wiring through the 1771-WH wiring arm and confirm sourcing output polarity before applying power.
Route DC output wiring separately from high-voltage conductors, motor cables, and switching power circuits. Use appropriate cable shielding and grounding practices according to site electrical standards.
Verify that connected loads remain within the specified current limits of individual outputs and the total module capacity. Confirm PLC-5 addressing, output mapping, and controller configuration before enabling field devices.
Follow electrostatic discharge handling procedures during installation, removal, and maintenance operations.
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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