Allen-Bradley 1756-OB32/A ControlLogix Digital Output Module
$123.00
$320.00
Description
Allen-Bradley 1756-OB32/A ControlLogix Digital Output Module
The Allen-Bradley 1756-OB32/A, also cataloged as the 1756-OB32 Digital Output Module, operates as a dedicated hardware component for DC sourcing signal execution within ControlLogix I/O platforms. The module provides 32-point field output switching with 10-31.2 VDC operation, point-level diagnostics, and rack-based communication through the ControlLogix backplane.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-OB32/A |
| Brand | Allen-Bradley |
| Origin | USA |
| Operating Temp | 0 deg C to 60 deg C |
| Module Type | Digital Output Module |
| Product Line | ControlLogix Bulletin 1756 I/O |
| Output Type | DC Sourcing |
| Number of Outputs | 32 points (grouped in 16 per group) |
| Voltage Range | 10-31.2 VDC |
| Maximum Current per Output | 0.35 A |
| Maximum Current per Module | 10 A |
| Connector Type | 36-pin |
| Communication Mode | Direct-connect or rack-optimized |
| Diagnostics | Point-level fault states and field-side diagnostics |
| Storage Temperature | -40 deg C to 85 deg C |
| Relative Humidity | Up to 95% RH, non-condensing |
| Vibration Resistance | 2 m/s2, 500 Hz maximum |
| Certifications | UL, CE, CSA, ATEX, IECEx, KC, FM, C-Tick |
EtherNet/IP and ControlLogix Output Architecture
The 1756-OB32/A operates within the ControlLogix I/O architecture using backplane bus communication for controller-to-module data transfer. The module supports high-density I/O deployment with 32 DC sourcing output points, allowing output channel allocation across multiple field devices.
Firmware flash compatibility follows the ControlLogix module management structure, enabling controller-based configuration and lifecycle maintenance. Direct-connect and rack-optimized communication modes provide selectable data exchange methods depending on chassis configuration and application requirements.
Frequently Asked Questions
Q: What output circuit type is supported by the 1756-OB32/A?
A: The module provides 32 DC sourcing outputs operating within a 10-31.2 VDC field voltage range.
Q: What are the current limitations of each output channel?
A: Each output point supports a maximum current of 0.35 A, with a total module current capacity of 10 A.
Q: Does the module provide field-side diagnostic functions?
A: Yes. The module supports point-level fault states and field-side diagnostics for output circuit monitoring.
Field Installation Guidelines
Install the 1756-OB32/A module into a compatible ControlLogix chassis slot and verify correct engagement of the module connector before applying field power. Confirm that connected DC loads operate within the specified voltage and current limits.
Route DC output wiring separately from high-voltage AC conductors and high-noise switching circuits where possible. Apply cable shielding and grounding practices according to the plant electrical installation standard. Verify terminal connections, connector seating, and module configuration parameters before commissioning the output channels.
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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