Allen-Bradley 1769-OW8I Relay Isolated Output Module – CompactLogix 1769 Series
When a relay output module fails on the production floor, the consequences are immediate and costly: conveyor lines halt, actuators lose control signals, safety interlocks go blind, and every minute of downtime translates directly into lost revenue and missed delivery commitments. The Allen-Bradley 1769-OW8I is the precision component that stands between your CompactLogix system and that scenario — an 8-point, relay-type, isolated digital output module engineered to deliver reliable switching control across the most demanding industrial environments.
Within the Rockwell Automation CompactLogix 1769 Series, the 1769-OW8I occupies a critical niche: it provides galvanic isolation between each output channel and the backplane, making it the preferred choice for applications where load-side voltage transients, ground loops, or mixed-voltage field devices would compromise a non-isolated module. Globally, the 1769 Series is one of the most widely deployed compact PLC platforms in discrete manufacturing, process control, and machine safety — and the OW8I variant is a staple in panel builds wherever relay-grade isolation is a specification requirement.
Technical Specifications
- Catalog Number: 1769-OW8I
- Series: CompactLogix 1769
- Output Type: Relay, Isolated (Form A — normally open)
- Number of Output Points: 8
- Isolation: Channel-to-channel and channel-to-backplane isolated
- Output Voltage Range: 10–265V AC / 5–125V DC (per channel)
- Maximum Output Current: 2.0 A per point (resistive load)
- Maximum Continuous Current: 8 A per module
- Minimum Load Current: 10 mA
- Relay Mechanical Life: 10,000,000 operations (no load)
- Relay Electrical Life: 100,000 operations (rated load)
- Backplane Current Draw (5V DC): 105 mA
- Backplane Current Draw (24V DC): 0 mA
- Operating Temperature: 0 to 60°C (32 to 140°F)
- Storage Temperature: -40 to 85°C (-40 to 185°F)
- Relative Humidity: 5–95% non-condensing
- Enclosure Rating: Open (must be installed in suitable enclosure)
- Agency Certifications: UL, CE, CSA (verify current listing with Rockwell)
- Module Width: Single-slot 1769 I/O module
- Weight: Approx. 200 g
⚠ Specifications are sourced from Rockwell Automation published datasheets. Always verify against the official product manual (Publication 1769-TD006) before engineering design.
Key Features & Benefits
- Full Channel Isolation: Each relay output is electrically isolated from the backplane and from other channels, eliminating ground loops and protecting the controller from field-side voltage spikes.
- Wide Voltage Compatibility: Switches both AC (up to 265V) and DC (up to 125V) loads from a single module, reducing panel complexity and spare-parts inventory.
- Relay Contact Output: Dry-contact relay outputs are inherently compatible with virtually any field device — solenoids, pilot lights, motor starters, alarms — without additional interface relays.
- Compact 1769 Form Factor: Single-slot module integrates directly into any CompactLogix or MicroLogix 1500 1769 I/O bank, preserving panel real estate.
- High Mechanical Endurance: 10 million mechanical operations per relay ensures long service life even in high-cycle applications.
- Diagnostic LED Indicators: Per-point output status LEDs enable rapid visual fault identification without a laptop or HMI.
- Hot-Swap Capable: Supports removal and insertion under power (RIUP) when used in compatible CompactLogix systems, minimizing maintenance downtime.
Industry & Equipment Applications
- Discrete Manufacturing: Conveyor control, end-of-line testing stations, assembly machine sequencing
- Food & Beverage: Valve actuation, pump control, CIP/SIP sequence outputs — where AC/DC mixed loads are common
- Water & Wastewater: Pump station control, chemical dosing valve outputs, alarm annunciation
- Oil & Gas: Wellhead control panels, compressor station I/O, where isolation from high-voltage field equipment is mandatory
- Building Automation & HVAC: AHU control, chiller sequencing, damper actuator outputs
- Machine Safety: Safety relay monitoring outputs, light curtain reset circuits (verify SIL/PLe requirements separately)
- Packaging Machinery: Reject gate control, label applicator triggers, case sealer outputs
System Integration & Compatible Parts
The 1769-OW8I is designed to work within the Rockwell Automation CompactLogix 1769 ecosystem. Commonly paired components include:
- Controllers: 1769-L16ER-BB1B, 1769-L18ERM-BB1P, 1769-L24ER-QB1B, 1769-L30ER, 1769-L33ER, 1769-L36ERM
- Power Supplies: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4
- Digital Input Modules: 1769-IQ16, 1769-IQ32, 1769-IA8I
- Analog Modules: 1769-IF4, 1769-OF4, 1769-IF8
- End Caps: 1769-ECR (right end cap), 1769-ECL (left end cap)
- Communication Adapters: 1769-ADN (DeviceNet), 1769-SDN
- Programming Software: Studio 5000 Logix Designer (v21 and above recommended)
- Wiring Base Assembly: 1769-TB3 or 1769-TB3S removable terminal block
If you need a complete BOM or system configuration review, contact our technical team at [email protected].
Our Quality Assurance Process
Every 1769-OW8I unit shipped from Konmask.com passes through a structured inspection protocol before dispatch:
- Visual Inspection: Housing integrity, connector pin condition, label legibility, and date-code verification
- Functional Power-On Test: Module is seated in a live 1769 rack and output point activation is verified via Studio 5000 forced I/O
- Relay Contact Continuity Check: Each of the 8 relay contacts is tested for proper make/break operation
- Firmware & Revision Verification: Module series and revision are documented and disclosed in the shipment record
- Anti-Static Packaging: Shipped in ESD-safe bags with foam cushioning inside double-wall cartons
- Traceability: Each unit is assigned a Konmask inspection reference number for post-sale support
How to Order
- Submit an RFQ via our website contact form or email [email protected]
- Provide your required quantity, delivery timeline, and destination country
- Receive a formal quotation with unit price, lead time, and shipping options within 24 business hours
- Confirm the order with a Purchase Order or advance payment per agreed terms
- Receive tracking information and inspection report upon shipment
For urgent requirements or large-volume orders, call us directly: +0086 19859288691
Why Choose Konmask.com?
- ✅ Specialist Focus: We stock and source exclusively industrial automation components — PLC modules, DCS cards, drives, and HMI parts from leading brands including Rockwell, Siemens, ABB, Schneider, and Mitsubishi.
- ✅ Verified Stock: Every unit is physically inspected and tested before listing — no blind-drop shipping from unverified sources.
- ✅ Global Export Experience: We ship to 60+ countries with full export documentation, commercial invoices, and packing lists compliant with international trade requirements.
- ✅ Technical Pre-Sales Support: Our team includes engineers with hands-on PLC programming and panel-build experience — we can help you confirm compatibility before you order.
- ✅ Responsive Communication: Inquiries answered within 24 hours; urgent requests prioritized.
- ✅ Transparent Sourcing: We disclose module series, revision, and date code on request — no surprises on delivery.
Frequently Asked Questions
Q: Is the 1769-OW8I compatible with MicroLogix 1500?
A: Yes. The 1769 I/O series is compatible with both CompactLogix controllers and the MicroLogix 1500 (1764) system when used with the appropriate local I/O bank configuration. Verify slot count and power budget with your system design.
Q: What is the difference between 1769-OW8I and 1769-OW8?
A: The key difference is isolation. The 1769-OW8I provides channel-to-channel and channel-to-backplane isolation on all 8 points. The 1769-OW8 is a non-isolated relay output module. For applications with mixed-voltage loads or where ground loops are a concern, the OW8I is the correct choice.
Q: Can I use the 1769-OW8I to control 3-phase motor starters directly?
A: The relay contacts are rated for 2A per point. For direct motor starter coil control (typically 120V AC or 24V DC coils drawing under 2A), this is feasible. For larger coils or inductive loads, verify the inrush current against the relay’s rated switching capacity and consider using an interposing relay.
Q: Do you provide a warranty on this module?
A: Yes. All units sold by Konmask.com carry a 90-day functional warranty covering defects identified during normal operation. Warranty claims are supported by our inspection reference number issued at shipment.
Q: How long does shipping take to my country?
A: Standard international express (DHL/FedEx/UPS) typically delivers within 3–7 business days to most destinations. Economy freight options are available for large orders. Contact us for a shipping quote to your specific location.
Q: Can you supply the 1769-TB3 terminal block with the module?
A: Yes. We can supply the 1769-TB3 or 1769-TB3S removable terminal block as an add-on to your order. Please specify when submitting your RFQ.
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Original Source: https://Konmask.com
Contact: [email protected] | +0086 19859288691
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