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Allen-Bradley 1794-OB16P Flex 16-Point Digital Output Module

1. Product Description

The 1794-OB16P is a 16-channel digital output module from Allen-Bradley’s FLEX I/O series, designed for industrial automation applications. It provides 24V DC sourcing outputs for controlling devices such as relays, solenoids, and indicators in PLC-based control systems. This module is part of the FLEX XT series, optimized for harsh environments with extended temperature ranges and enhanced durability.

2. Key Features

16-Channel Sourcing Outputs – Supports 24V DC outputs, with each channel capable of 0.5A continuous current and 4.0A surge current (for 10ms).
Extended Temperature Range – Operates in -20°C to +70°C (-4°F to 158°F), making it suitable for extreme industrial conditions.
Hot-Swappable (RIUP) – Can be installed or removed without powering down the system, reducing downtime.
LED Status Indicators – Each channel has a yellow LED for real-time output status monitoring.
Robust Protection – Features short-circuit, over-temperature, and overload protection, ensuring reliable operation.
Flexible Communication – Compatible with EtherNet/IP, ControlNet, DeviceNet, and Remote I/O via adapters (e.g., 1794-AENT, 1794-ADN).

3. Technical Specifications

Parameter	Specification
Output Type	16 sourcing DC outputs
Output Voltage	24V DC (10–31.2V DC range)
Current per Channel	0.5A (continuous), 4.0A (surge for 10ms)
Module Total Current	8A (continuous)
Power Consumption	6.8 BTU/hr (2W)
Isolation	Non-isolated (common group for all channels)
Operating Temp.	-20°C to +70°C
Certifications	CE, UL, CSA, RoHS

4. Applications

Manufacturing Automation – Machine control, conveyor systems, and robotic cells.
Process Industries – Actuating valves and pumps in water treatment plants.
Material Handling – Packaging machinery and assembly line automation.

5. Installation & Precautions

Terminal Base Required – Must be installed on compatible bases (1794-TB3, 1794-TB3S).
Wiring Compliance – Use shielded cables in high-noise environments to prevent interference.
Load Matching – Avoid exceeding 0.5A per channel or 8A module total.
Environmental Limits – Ensure ambient conditions stay within -20°C to +70°C.