Allen Bradley 1794-OB16P Flex 16 Pint Digital Output Module

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Brand Name                 AB

Product reference     1794-OB16P

FLEX I/O Digital Input Modules Catalog numbers 1794-IB8, 1794-IB16, 1794-IB32

The search for an I/O platform requires consideration of several possible constraints, such as available space, reliability, flexible design, manufacturer, and cost. The Allen-Bradley 1794-OB16P I/O module is a Flex digital DC output module for programmable controller sourcing. The manufacturer created this module with a space-saving design that is suitable for small operations, including where space is limited. Rockwell Automation is the manufacturer of Allen-Bradley modules and accessories and is a leading provider of IO modules and other automation equipment and accessories. This Flex digital output module offers the elements of larger rack-based I/O platforms in a more compact design and with a smaller space requirement. This 16-point digital output module features a Flex I/O design, 16 outputs, a discrete 24 VDC power supply, open style sourcing output, IP20, and the option for either a panel or DIN mount. The 1794-OB16 DC source output module PLC eliminates expensive engineering costs and installation. The manufacturer designed this model with a platform that provides flexible setup to ensure ease of installation and minimal downtime. The Allen-Bradley Flex digital 24 VDC output module was designed by the manufacturer to provide reliable operation, even in extreme weather and harsh environments. These I/O modules deliver network flexibility and an improvement in operations. In order to ensure that you have the right and accessories, it is important to know the product specifications. This model is equipped with 16 outputs, 24VDC voltage on-state output, a voltage range of 10 VDC – 31.2 VDC, 500 mA maximum current on-state output, and power dissipation of 4.2W at 31.2V DC. The module is compatible with several terminal base unit models from this manufacturer and can be used with terminal base units that include the 1794-TB3 and 1794-TB35. The terminal bases can be exchanged without the need to move other bases in the system. The modularity of this system offers ease of expansion and choice of network. The manufacturer has created a flexible design that offers communication on ControlNet, DeviceNet and Ethernet open networks. The Flex I/O framework also works with Interbus-S, PROFIBUS DP, and other open systems. The manufacturer, Rockwell Automation, has sold more than 4 million 1794-OB16 module units and documented the performance of this output module. This module and other I/O modules and accessories from the same manufacturer are extremely popular for their flexibility, adaptability, measured quality, cost effectiveness, and manufacturer warranty. The Allen-Bradley 1794-OB16 module PLC offers the flexibility to meet a variety of conditions and applications. You have the ability to independently select the input, output, end style, and system to meet the exact specifications of your application. The parts and connectors are easily accessible to add to your framework to meet the changing needs of your business. A broad range of accessories and components are available from this manufacturer to create and expand your system to customize it to your needs. You can search online for other modules, components and accessories from this manufacturer as well. The Allen-Bradley 1794-OB16 helps to increase productivity, reduce downtime, enhance network flexibility, and improve plant operations, even in harsh environments.

ATTENTION: During mounting of all devices, be sure that all debris (metal chips, wire strands, etc.) is kept from falling into the module. Debris that falls into the module could cause damage on power up.

1. Rotate the keyswitch (1) on the terminal base (2) clockwise to position 2 as required for this type of module. 2. Make certain the flexbus connector (3) is pushed all the way to the left to connect with the neighboring terminal base/adapter. You cannot install the module unless the connector is fully extended.

3. Make sure the pins on the bottom of the module are straight so they will align properly with the connector in the terminal base. 4. Position the module (4) with its alignment bar (5) aligned with the groove (6) on the terminal base. 5. Press firmly and evenly to seat the module in the terminal base unit. The module is seated when the latching mechanism (7) is locked into the module. Connect Wiring for the 1794-IB8 and 1794-IB16 using a 1794-TB3 or 1794-TB3S 1. Connect individual input wiring to numbered terminals on the 0…15 row (A) as indicated in the Wiring Connections for 1794-IB8 and 1794-IB16 table. 2. Connect the associated +V DC power lead of the input device to the corresponding terminal on the 34…51 row (C) for each input as indicated in the Wiring Connections for 1794-IB8 and 1794-IB16 table. (The +V power terminals of row (C) are internally connected together.) 3. Connect the associated input common (3-wire devices only) to the corresponding terminal on the 16…33 row (B) for each input as indicated in the Wiring Connections for 1794-IB8 and 1794-IB16 table. (Commons are internally connected together.) 4. Connect +V DC power to terminal 34 on the 34…51 row (C). 5. Connect DC common to terminal 16 on the 16…33 row (B). 6. If daisychaining power to the next terminal base, connect a jumper from terminal 51 (+V DC) on this base unit to terminal 34 on the next base unit. 7. If continuing DC common to the next base unit, connect a jumper from terminal 33 (common) on this base unit to terminal 16 on the next base unit.

Connect Wiring for the 1794-IB32 using a 1794-TB32 or 1794-TB32S 

1. Connect individual input wiring (IN0…IN15) to numbered terminals on the 0…15 row (A) as indicated in the Wiring Connections for 1794-IB32 table. 

2. Connect the associated power to the +V1 terminal (35, 37, 39, or 41) on the 34…51 row (C) as indicated in the Wiring Connections for 1794-IB32 table. 

3. Connect the associated common for IN0…IN15 to COM1 (terminal 36, 38, 40, or 42) on the 34…51 row (C) as indicated in the Wiring Connections for 1794-IB32 table.

4. Connect individual input wiring (IN16…IN31) to numbered terminals on the 16…33 row (B) as indicated in the Wiring Connections for 1794-IB32 table. Do not connect to terminals 16 or 33. 

5. Connect the associated power to the +V2 terminal (43, 45, 47, or 49) on the 34…51 row (C) as indicated in the Wiring Connections for 1794-IB32 table. 

6. Connect the associated common for IN16…IN31 to COM2 (terminal 44, 46, 48, or 50) on the 34…51 row (C). 

7. If continuing input wiring power for IN0…IN15 to the next terminal base, connect a jumper from terminal 41 (+V1) on this terminal base unit to the power terminal on the next terminal base unit. (Refer to the installation instructions for the specific terminal base unit. 

8. If continuing input wiring IN0…IN15 common to the next terminal base, connect a jumper from terminal 42 (COM1) on this terminal base unit to the common terminal on the next terminal base unit.

9. If continuing input wiring power for IN16…IN31 to the next terminal base, connect a jumper from terminal 49 (+V2) on this terminal base unit to the power terminal on the next terminal base unit. (Refer to the installation instructions for the specific terminal base unit. 

10. If continuing input wiring IN16…IN31 common to the next terminal base, connect a jumper from terminal 50 (COM2) on this terminal base unit to the common terminal on the next terminal base unit.

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