Allen-Bradley 1756-OX8I/A ControlLogix Isolated Relay Output Module
$123.00
$320.00
Description
Allen-Bradley 1756-OX8I/A ControlLogix Isolated Relay Output Module
The Allen-Bradley 1756-OX8I/A, also cataloged as the 1756-OX8I Isolated Relay Output Module, operates as a dedicated hardware component for relay-based discrete signal switching within ControlLogix I/O chassis systems. The module provides 8 individually isolated Form C relay outputs for AC and DC field device control.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-OX8I/A |
| Brand | Allen-Bradley |
| Origin | United States |
| Dimensions | Open style, 1-slot ControlLogix chassis module |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | Not specified in provided data |
| Product Type | Isolated Relay Output Module |
| Series | Bulletin 1756 ControlLogix I/O |
| Output Channels | 8 individually isolated relay outputs |
| Output Type | Mechanical relay contact |
| Contact Configuration | Form C (SPDT) |
| DC Voltage Range | 5-125 VDC |
| AC Voltage Range | 5-240 VAC |
| Maximum Output Current | 2 A DC, 2 A AC resistive load |
| Connector | 36-pin |
| Isolation | Channel-to-channel isolation |
| Diagnostics | Field-side diagnostics and fault detection |
| 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 |
Industrial Control and Relay Output Architecture
The 1756-OX8I/A uses individually isolated relay channels to provide separate field switching paths within the ControlLogix platform. The Form C SPDT contact structure supports normally open and normally closed switching states for discrete actuators, contactors, indicators, and other field devices.
The module operates through ControlLogix backplane communication and supports I/O density scaling through 8 relay output points in a single chassis slot. The isolated relay structure separates output circuits, reducing electrical interaction between independent field connections.
Frequently Asked Questions
Q: What type of loads can the 1756-OX8I/A control?
A: The module controls AC and DC discrete loads through mechanical relay contacts. The supported ranges are 5-125 VDC and 5-240 VAC.
Q: Are all relay outputs isolated from each other?
A: Yes. Each of the 8 relay outputs provides individual channel-to-channel isolation for separate field wiring.
Q: What contact arrangement is used by the relay outputs?
A: The module uses Form C (SPDT) relay contacts, providing normally open and normally closed switching capability.
Field Installation Guidelines
Install the 1756-OX8I/A module in an approved ControlLogix chassis slot and verify that the correct 36-pin interface connection is secured before applying power.
Separate relay output wiring from low-level analog or communication cables where possible to reduce electrical interference. Confirm field load voltage and current requirements before connection. Use appropriate grounding and shielding practices for the installed control cabinet environment.
Inspect terminal connections periodically to maintain proper mechanical contact integrity and verify that relay switching circuits remain within specified electrical limits.
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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