Allen Bradley 1771-OBDS/A Digital DC Output Module
$123.00
$320.00
Description
Allen Bradley 1771-OBDS/A Digital DC Output Module
The Allen Bradley 1771-OBDS/A, also cataloged as the 1771-OBDS Digital DC Output Module, operates as a dedicated hardware component for discrete DC load switching within PLC-5 1771 I/O chassis platforms. The module provides sixteen sourcing outputs with current limiting, opto-electrical isolation, and PLC backplane communication.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-OBDS/A |
| Brand | Allen Bradley |
| Origin | United States |
| Weight | 1.85 lbs |
| Power Consumption | Backplane current: 300 mA to 400 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 Resistive Current Per Output | 2 A |
| Maximum Continuous Current Per Module | 8 A |
| Pilot Duty Current | 0.2 A per output |
| 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 |
| Mounting Type | Rack mountable |
| ESD Immunity | 4 kV contact discharge; 8 kV air discharge |
PLC-5 Digital Output Switching Interface
The 1771-OBDS/A provides sixteen individually controlled sourcing DC outputs for PLC-5 controller applications. Each output channel sources current to connected DC field devices and includes current-limiting protection for overload and short-circuit conditions.
The module communicates through the 1771 chassis backplane and supports BDC and Natural Binary data formats. Output data received from the PLC processor is converted into discrete switching states for connected field circuits.
The conformal coating protects the module electronics from environmental contamination during industrial installation. Opto-electrical isolation separates field-side output circuits from internal PLC logic circuitry.
Industrial Control and Backplane Integration
The 1771-OBDS/A uses PLC-5 backplane bus communication for deterministic I/O data exchange. The sixteen-point output structure supports PLC-5 I/O density scaling within compatible 1771 chassis configurations.
The module supports Ethernet/IP or Profinet network architectures only through PLC-5 system-level communication interfaces; the module itself operates as a chassis-based I/O component. Firmware flash compatibility is not specified for this hardware generation.
Configuration requires correct chassis slot assignment, controller compatibility, and I/O addressing within the PLC-5 processor program.
Frequently Asked Questions
Q: How many output points are available on the 1771-OBDS/A module?
A: The module provides sixteen sourcing DC digital output channels.
Q: What voltage range is supported by the 1771-OBDS/A outputs?
A: The module supports a 10-60 VDC output voltage category with a specified operating range of 10-40 VDC.
Q: What protection functions are integrated into the output channels?
A: Each output includes current-limiting protection for overload and short-circuit conditions.
Field Installation Guidelines
Install the 1771-OBDS/A 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 correct sourcing output polarity.
Route DC output wiring separately from high-voltage conductors, motor cables, and high-frequency switching circuits. Apply standard industrial grounding practices for cable shields where shielded wiring is used.
Verify connected loads remain within the specified output current limits. Check PLC-5 configuration parameters, I/O addressing, and controller communication before enabling field outputs.
Follow electrostatic discharge handling procedures during module installation and maintenance.
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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