Discrete Output Control Solution — Allen-Bradley 1762-OB8 | MicroLogix 1200/1500 Series
Where This Product Is Used
The Allen-Bradley 1762-OB8 is a field-proven discrete output module deployed across a wide range of industrial automation environments. Engineers and system integrators specify this module in applications including:
- Conveyor & Material Handling Systems — Controlling solenoid valves, motor starters, and indicator lights along production lines in automotive, food & beverage, and logistics facilities.
- Packaging Machinery — Driving actuators, pneumatic cylinders, and reject mechanisms in high-cycle packaging lines requiring reliable 24VDC sourcing outputs.
- Water & Wastewater Treatment Plants — Switching pump contactors, valve actuators, and alarm outputs in SCADA-integrated control panels.
- HVAC & Building Automation — Controlling damper actuators, fan starters, and zone valves in commercial building management systems.
- Machine Tool & CNC Auxiliary Control — Managing coolant pumps, tool changers, and safety interlocks as part of a MicroLogix-based machine controller.
- Oil & Gas Field Instrumentation — Operating remote actuated valves and shutdown relays in hazardous-area control panels (with appropriate barrier/isolator).
- Pharmaceutical & Clean Room Automation — Controlling sterilization valves, agitator drives, and batch process outputs under GMP-compliant PLC architectures.
Technical Specifications
| Parameter | Value |
|---|---|
| Catalog Number | 1762-OB8 |
| Series | MicroLogix 1200 / MicroLogix 1500 Expansion |
| Output Type | DC Sourcing (PNP) |
| Number of Output Points | 8 |
| Output Voltage Range | 10–28.8 VDC |
| Rated Output Current | 0.5 A per point |
| Maximum Load Current (module) | 4 A total |
| Output Protection | Electronic short-circuit & overload protection |
| Isolation | Optical isolation between field and logic side |
| Backplane Current Draw (5 VDC) | 75 mA |
| Operating Temperature | 0 °C to +60 °C (32 °F to 140 °F) |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95% non-condensing |
| Dimensions (H × W × D) | 90 × 40 × 87 mm (approx.) |
| Weight | Approx. 100 g |
| Wiring Type | Removable terminal block (RTB) |
| Certifications | UL, CE, CSA |
Why Engineers Specify This Model
- Sourcing (PNP) Output Architecture — Directly compatible with the majority of 24VDC industrial field devices (solenoids, relays, indicators) without additional interface hardware.
- Electronic Output Protection — Built-in short-circuit and overload protection eliminates the need for external fusing on each output point, reducing panel BOM cost and wiring complexity.
- Optical Isolation — Protects the MicroLogix CPU backplane from field-side voltage transients and ground loops common in industrial environments.
- Compact Form Factor — Single-slot expansion module integrates seamlessly into existing MicroLogix 1200/1500 control panels without requiring additional DIN rail space.
- Removable Terminal Block — Enables module replacement without rewiring field cables, minimizing downtime during maintenance or module swap-out.
- Proven Platform Longevity — The MicroLogix 1200/1500 platform has an extensive installed base globally, ensuring long-term spare parts availability and engineering familiarity.
Complete System Bill of Materials
A typical MicroLogix-based discrete output control system using the 1762-OB8 includes the following components:
- PLC CPU — Allen-Bradley 1762-L24BWA or 1762-L40BWA (MicroLogix 1200) / 1764-LSP or 1764-LSP (MicroLogix 1500)
- Output Module — Allen-Bradley 1762-OB8 (this unit)
- Input Module — Allen-Bradley 1762-IQ8 (8-point 24VDC sinking input) or 1762-IA8 (120VAC input)
- Power Supply — 24VDC DIN rail PSU, 5 A minimum (e.g., Allen-Bradley 1606-XLP series)
- Programming Cable / Adapter — Allen-Bradley 1761-CBL-PM02 (RS-232) or 1747-UIC (USB-to-DH485)
- Programming Software — Rockwell Automation RSLogix 500 / Studio 5000 Logix Designer (for MicroLogix)
- Field Wiring Accessories — Removable terminal block (RTB) pre-wired harness, DIN rail, end caps
- Enclosure — NEMA 12 or IP54 steel enclosure sized for panel layout
Contact support@konmask.com for complete BOM quotations and system integration support.
Compliance & Industry Standards
- UL Listed — Recognized under UL 508 (Industrial Control Equipment)
- CE Marked — Compliant with EU Low Voltage Directive (LVD) and EMC Directive
- CSA Certified — Canadian Standards Association approval for North American markets
- RoHS Compliant — Restriction of Hazardous Substances (EU Directive 2011/65/EU)
- IEC 61131-2 — Programmable controllers — Equipment requirements and tests
- ATEX / IECEx — Not intrinsically safe; use appropriate safety barriers for Zone 1/2 hazardous area installations
Quality Assurance & Sourcing
Konmask.com sources the Allen-Bradley 1762-OB8 through verified industrial distribution channels. Every unit offered on this listing is subject to the following quality controls:
- Visual Inspection — Housing integrity, label authenticity, terminal block condition, and connector pin alignment checked on receipt.
- Functional Verification — Output point continuity and isolation resistance tested prior to dispatch where applicable.
- Authenticity Screening — Catalog number, date code, and country-of-manufacture markings cross-referenced against Rockwell Automation documentation.
- Packaging Integrity — Anti-static packaging, moisture barrier bags, and shock-absorbing outer cartons used for all shipments.
- Traceability — Batch records maintained for all inventory; available upon request for regulated industries (pharma, nuclear, defense).
How to Source This Part
- Add to Cart — Click “Add to Cart” above and proceed to checkout. We accept T/T bank transfer, PayPal, and major credit cards.
- Request a Quote — For orders of 5+ units or project BOM quotations, email support@konmask.com with your required quantity and delivery timeline.
- Lead Time — In-stock units ship within 1–3 business days. Out-of-stock units: estimated lead time provided at inquiry stage.
- Global Shipping — DHL Express, FedEx International Priority, and sea freight options available. Export documentation (commercial invoice, packing list, COO) provided for all international shipments.
- After-Sales Support — 12-month warranty on all units. Technical support available via email and WhatsApp: +0086 19859288691.
Application-Specific FAQ
Q: Is the 1762-OB8 compatible with MicroLogix 1100?
A: No. The 1762 expansion I/O series is compatible with MicroLogix 1200 and MicroLogix 1500 only. MicroLogix 1100 uses a different expansion bus (1762 series is not supported on 1100).
Q: Can I use the 1762-OB8 to drive 120VAC loads directly?
A: No. The 1762-OB8 is a 24VDC sourcing output module. For 120VAC loads, specify the 1762-OA8 (AC output) module instead.
Q: How many 1762-OB8 modules can I add to a MicroLogix 1200 system?
A: MicroLogix 1200 supports up to 6 expansion modules (1762 series). The total backplane current budget must be observed — consult the MicroLogix 1200 System User Manual (Publication 1762-UM001) for detailed expansion rules.
Q: Does the 1762-OB8 support diagnostics or fault reporting?
A: Yes. The module reports output fault status (short-circuit/overload) to the MicroLogix CPU via the expansion bus. Fault bits are accessible in the output image table for ladder logic fault handling routines.
Q: What is the replacement part if the 1762-OB8 is discontinued?
A: Rockwell Automation has announced migration paths to the Micro820 / Micro850 (2080 series) platform. However, the 1762-OB8 remains available as a spare part. Contact us for long-term supply agreements.
Q: Can Konmask provide a Certificate of Conformance (CoC)?
A: Yes. A CoC can be provided upon request for regulated procurement requirements. Please specify at time of order.
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Contact: support@konmask.com | +0086 19859288691
