1771-OD16 Ser A (PU)

Allen Bradley Bulletin 1771 | DC Output Module

Allen Bradley Bulletin 1771 | 16-Point 10-60VDC Sourcing Output Module, 0.5A per channel, Series A

The Allen-Bradley 1771-OD16 is a high-density discrete DC output module designed for the 1771 Universal I/O platform. It serves as a rugged interface between PLC-5 controllers and a variety of DC-powered field devices, such as solenoids, relays, contactor coils, and indicators. It is engineered for industrial applications requiring reliable, deterministic control of 16 independent output channels within a single chassis slot.

This Series A module features 16 sourcing outputs, meaning it provides current from the DC power supply to the connected load. It operates over a wide voltage range of 10 to 60VDC, offering flexibility for various industrial control voltages. To ensure system-wide protection, the module provides 1500V RMS electro-optical isolation between the field-side load and the sensitive backplane logic, preventing electrical faults from affecting the processor.

The 1771-OD16 utilizes the 1771-WH field wiring arm, allowing for rapid module replacement without the need to disconnect individual field wires, which significantly reduces maintenance downtime. The front panel is equipped with 16 dedicated status LEDs that provide immediate visual diagnostics, allowing maintenance personnel to quickly verify the state of each output channel during operation.

Built for continuous duty in heavy industrial environments, the module operates reliably between 0–60°C (32–140°F) in non-condensing humidity up to 95%. It draws 400mA at 5VDC directly from the chassis backplane. The assembly is designed to withstand industrial-grade shock and vibration and is UL listed, CSA certified, and CE compliant, meeting all global requirements for industrial machinery and process control systems.

Key Specifications:

- Outputs: 16 (Sourcing)
- Voltage Range: 10–60VDC
- Max Current per Channel: 0.5A
- Max Current per Module: 8.0A
- Backplane Current: 400mA @ 5VDC
- Wiring Arm: 1771-WH
- Platform: 1771 Universal I/O (PLC-5)
- Series: A