1794-OB16 Allen-Bradley Flex I/O DC Output Module 16 Ch

Product Overview

The Allen-Bradley 1794-OB16 is a Flex I/O digital DC output module. It features 16 sourcing output channels. Each channel delivers up to 500 mA at 24 VDC nominal. The output voltage range is 10 to 31.2 VDC. The module includes 16 yellow status indicators for easy diagnostics. It works with terminal bases such as 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3K, and 1794-TB3SK. The 1794-OB16 has a keyswitch position 2 for correct alignment. Its dimensions are 94 x 94 x 69 mm, and it weighs 78 g.

Application Scenarios

This output module suits many discrete control tasks. Use it to operate solenoids, relays, and indicator lights. It works in manufacturing, packaging, and material handling systems. The module integrates with any 1794 Flex I/O adapter for distributed I/O. You can install up to eight units in a single rack. It also supports FlexLogix controllers as local I/O. The module offers fast output signal delay: 0.5 ms off-to-on and 1 ms on-to-off. Surge current is 2 A for 50 ms.

Technical Specifications

• Number of outputs: 16, sourcing
• On-state voltage: 10 to 31.2 VDC
• Nominal voltage: 24 VDC
• Output current per channel: 500 mA max
• Total output current: 8 A
• On-state voltage drop: 0.5 VDC max
• Off-state leakage current: 0.5 mA max
• Isolation voltage: 50 V continuous
• Tested at 850 VDC for 1 second
• FlexBus current: 80 mA at 5 VDC
• Power dissipation: 5.3 W at 31.2 VDC
• Thermal dissipation: 18.1 BTU/hr
• Operating temperature: 0 to 55 °C
• Storage temperature: -40 to 85 °C
• Vibration: 5 g at 10 to 500 Hz
• Shock: 30 g
• Dimensions: 94 x 94 x 69 mm
• Weight: 78 g
• Enclosure: Open-type
• Keyswitch position: 2
• IEC temperature code: T3

Installation and Maintenance Guide

Mount the 1794-OB16 on a DIN rail using the chosen terminal base. Set the keyswitch to position 2. Connect field wiring to the terminal base terminals. Use proper wire sizes as per the base specifications. The module does not include internal fuses. Install an external fuse if needed, such as SAN-O MQ4-800 mA. Check the status LEDs for each channel. Keep the module clean and dry.

Shipping Information

We ship this product via FedEx, UPS, or DHL. All orders are securely packed. Delivery times depend on your location.

Packing List

• 1x Allen-Bradley 1794-OB16 output module
• 1x user manual