Application Scenarios
An OEM building a small conveyor sorting system needed to add control for several 24V DC divertor solenoids but had limited panel space and a tight budget. The 1762-OB8 was chosen for its compact footprint and direct compatibility with the existing MicroLogix 1400 backplane. Its sourcing output configuration matched the customer’s existing wiring practices, eliminating the need for additional interposing relays. This streamlined the panel layout, reduced component count, and cut installation time by 20%, addressing the core challenges of cost, space, and electrical compatibility.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1762-OB8 |
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Product Category | Digital Output Module (Expansion I/O) |
| Compatible Controllers | MicroLogix 1200, 1400 series |
| Number of Outputs | 8 points, Sourcing (PNP) |
| Output Type | Solid-State (Transistor) |
| Rated Voltage | 24V DC (20.4 – 26.4V DC operating range) |
| Current per Point | 0.5 A @ 55°C (1.0 A @ 30°C max) |
| Max Module Current | 4 A (total per common group) |
| On-State Voltage Drop | ≤ 1.0V DC |
| Switching Speed | On Delay: 0.1 ms, Off Delay: 1.0 ms |
| Isolation | Optically isolated (Field to Logic) |
| Connection | Removable screw terminal block |
| Dimensions (HxWxD) | 90 mm x 40.4 mm x 87 mm |
| Mounting | DIN Rail (35 mm) |
Technical Principles and Innovative Values
The 1762-OB8 is engineered for high-speed, long-life performance in compact control systems.
- Innovation Point 1: Solid-State Reliability: Unlike mechanical relay modules, the 1762-OB8 uses transistor switching, which offers a virtually unlimited electrical life with no moving parts to wear out. This makes it ideal for high-cycle applications like packaging indexing or rapid sorting operations.
- Innovation Point 2: High-Speed Switching: With an on-delay of just 0.1 ms, the module provides precise, jitter-free control for time-critical tasks. This speed is essential for applications requiring fast response to sensor inputs or coordinated motion control.
- Innovation Point 3: Sourcing Logic Simplification: The sourcing (PNP) output design means the module supplies positive voltage to the load. This configuration is intuitive for maintenance technicians and aligns with modern sensor and actuator wiring standards, reducing wiring errors during installation or troubleshooting.
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