Description
Allen-Bradley 1762-OB16 16-point digital output module
Product Dimensions：
The Allen-Bradley 1762-OB16 is a high-density digital output module designed for the MicroLogix 1100, 1200, and 1400 PLC systems. It allows these controllers to interface with and control a variety of 24V DC field devices.
Product Detailed Description
The 1762-OB16 is a “Sourcing” digital output module featuring 16 points. As a sourcing module, it provides a positive voltage (24V DC) to the connected load when an output is energized. It is a compact expansion module that connects directly to the right side of a MicroLogix controller or another expansion I/O module via an integrated bus connector.
Technical Parameters
| Parameter | Specification |
| Module Type | Digital Output (Sourcing) |
| Number of Outputs | 16 Channels |
| Operating Voltage | 24 V DC (range: 20.4 to 26.4 V DC) |
| Current per Point | 0.5 A (max) |
| Current per Module | 4.0 A (max) |
| Signal Delay (On to Off) | Max 1.0 ms |
| Signal Delay (Off to On) | Max 0.1 ms |
| Bus Current Draw | 175 mA @ 5 V DC |
| Off-State Leakage | 1.0 mA (max) |
| Surge Current | 2.0 A per point (repeatable every 2s for 10ms) |
Product Advantages
- High Density: Provides 16 output points in a very small form factor, allowing for significant control capabilities without increasing the footprint of the PLC rack.
- Fast Response: Extremely low signal delay (sub-millisecond) makes it suitable for high-speed industrial applications where timing is critical.
- Easy Installation: Uses a simple “tongue-and-groove” interlocking system with an integrated ribbon cable for the bus connection, requiring no external tools for bus assembly.
- Removable Terminal Block: Facilitates easy wiring and module replacement without having to disconnect every individual field wire.
Important Considerations & Precautions
- Sourcing vs. Sinking: This is a Sourcing module. Ensure your field devices (solenoids, relays, etc.) are wired to accept positive voltage at the input and are tied to a common negative/ground.
- Total Current Limits: While each point can handle 0.5 A, the entire module is limited to 4.0 A. Ensure the sum of all simultaneous outputs does not exceed this limit to prevent overheating.
- Inductive Loads: When driving inductive loads (like motor starters or large solenoids), it is highly recommended to use external surge suppressors (diodes) to protect the module’s transistors from “flyback” voltage spikes.
- Power Supply: The module requires an external 24V DC power source for the field-side outputs. This should be a clean, regulated industrial power supply.
Product Applications
The 1762-OB16 is commonly used in small-to-medium scale automation projects:
- Packaging Machinery: Controlling small solenoids for pneumatic cylinders, sorters, and pick-and-place units.
- Material Handling: Activating status indicators, stack lights (tower lights), and small DC motors on conveyor lines.
- Assembly Lines: Interfacing with 24V DC relays to trigger larger actuators or specialized tooling.
- Building Automation: Managing lighting controls and small HVAC dampers.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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