Product Details
Product Description
The Allen Bradley 1746-OW8 is a digital contact output module from the SLC 500 series, designed to provide reliable relay-based switching for both AC and DC loads. With eight outputs divided into two groups, this module offers flexibility for industrial control applications requiring discrete relay contacts.
Technical Specifications
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Manufacturer: Allen Bradley
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Product Line: SLC 500
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Category: PLC Output Modules
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Model / Part Number: 1746-OW8
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Weight: 1 lb (0.45 kg)
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Module Type: Digital relay output
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Number of Outputs: 8 points
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Groups: 2 groups, 4 points per group
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Output Type: Normally open (N.O.) relay contact
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Operating Voltage Range: 5–265 VAC or 5–125 VDC
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Current per Output:
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1.5 A at 120 VAC
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1.2 A at 24 VDC
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Applications: Relay contact outputs (4 per common)
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Step Response: 60 ms input, 2.5 ms output
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Backplane Current Draw: 0.85–0.9 A
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Signal Delay (Resistive Load): On = 10 ms, Off = 10 ms
Application Scenarios
The 1746-OW8 is suitable for switching solenoids, pilot lights, and other discrete devices in industrial automation systems. Its wide voltage range and relay-based design make it versatile for mixed AC/DC load environments.
FAQ
Q: How many groups of outputs are available? A: The module has two groups, each with four outputs.
Q: What type of relay contacts are used? A: It uses normally open (N.O.) relay contacts.
Q: What is the maximum current per output? A: 1.5 A at 120 VAC and 1.2 A at 24 VDC.
Q: Can this module handle both AC and DC loads? A: Yes, it supports 5–265 VAC and 5–125 VDC operating ranges.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.