1746-OB16 | Allen-Bradley SLC 500 16-Channel DC Output Module (Sourcing)
1746-OB16 | Allen-Bradley SLC 500 16-Channel DC Output Module (Sourcing)
1746-OB16 | Allen-Bradley SLC 500 16-Channel DC Output Module (Sourcing)
    1746-OB16 | Allen-Bradley SLC 500 16-Channel DC Output Module (Sourcing)
1746-OB16 | Allen-Bradley SLC 500 16-Channel DC Output Module (Sourcing)

1746-OB16 | Allen-Bradley SLC 500 16-Channel DC Output Module (Sourcing)

Part #: 1746-OB16 Manufactured by: Allen-Bradley
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$362.00
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$362.00
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Product Overview
The Allen-Bradley 1746-OB16 is a SLC 500 Digital DC Output Module. This Digital DC Output Module has a Voltage Range of 10...  Read more
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Product Description P/N: 1746-OB16

Description / Specifications

Description 

The Allen-Bradley 1746-OB16 is an SLC500 Discrete DC output module. This DC output module features Sixteen (16) DC output channels in One (1) group, providing signal voltages of 24VDC with output voltage range of 10-5-VDC.

 

 

Technical Specifications 

Brand Allen-Bradley
Series SLC500
Part Number 1746-OB16
Manufacturer Rockwell Automation
Continuous current per module, max 6.4 A @ 0...60 °C (32...140 °F)
Continuous current per point 1.5 A @ 30 °C (86 °F) 1.0 A @ 55 °C (131 °F)
Backplane Current at 5.1 Volts 0.135 A
OFF state leakage current 1 mA
Output Delay Time, ON to OFF 0.1 ms
Output Delay Time, OFF to ON 1.0 ms
Operating Voltage Range 10-30VDC
Output Voltage 24VDC output
No. of Outputs 16
Module Type Digital DC Output Module
Voltage Range 10-50 Volts DC Source
Outputs 16
Current/Output 0.5 or 0.25 amps
Current/Module 8 or 4 amps
Backplane Current (5 Volts) 280 milliamps
Current/Module (30 Celsius) 9 amps
Applications High Current
Step Response 60 milliseconds in, 2.5 milliseconds out
Heat Dissipation 7.6 Watts

  

 

Information About 1746-OB16

The Allen-Bradley 1746-OB16 is a Discrete output module that is compatible with for use with the SLC500 product family. This module features Sixteen (16) 24VDC output channels that is used to energize electrical devices for implementing manual and automatic control of the process or machines.

The 1746-OB16P is a single slot module that fits to any slot of an SLC500 chassis except the leftmost module which is reserved for the processor or communication module. The 1746-OB16P has a backplane current draw of 0.250 A at 5VDC and 0 A at 24VDC. It has an OFF state leakage current of 1 mA and load current of 1 mA. Eacu channel has a continuous Current of ) 1.5 A @ 30 °C (86 °F) 1.0 A @ 60 °C (140 °F) and continuous Current per module of 6.4 A @ 0...60 °C (32...140 °F).

The 1746-OB16P does not an output grouping or individual channel isolation. It comes with a single group, compsed of the entire Sixteen (16) channels. Each channel has an ON signal delay of 0.1 ms and OFF signal delay of 1.0 ms with ON-state voltage drop of 1.0V at 1.0 A with surge current per point of 4.0 A at 10 ms and surge current per module of 32.0 A at 10 ms.

The 1746-OB16P may be installed in the local chassis, along the processor or act to a distributed I/O station, along a communication adapter.

The 1746-OB16 SLC 500 Digital DC Output Module by Allen-Bradley is a DC module with sixteen 24V DC outputs and it is lodged in any free slot in the 1746 I/O Chassis. It has 16 output points and a backplane electrical rating of 0.280A at 5 Volts DC and one of 0A at 24V DC. The 1746-OB16 has a load-dependent maximum signal delay time of 1ms for OFF and 0.1ms for ON and a maximum current loss of 1mA in its OFF state. In its ON state, it has a voltage loss of 1.2 Volts at 0.50A and the minimum load each point can carry is 1mA.

The 1746-OB16 has a nominal input current of 0.5A at 30 degrees Celsius and 0.25 A at 60 degrees Celsius for each output point and it has a gross input current of 8A at 30 degrees Celsius and 4A at 60 degrees Celsius per module. It also has a current surge of 3A for 10ms recurring every 1s at 30 degrees Celsius and 2s at 60 degrees Celsius (140 degrees Fahrenheit). The 1746-OB16 provides voltage isolation between the backplane and the outputs tested at 1500 Volts AC and it has a total heat dissipation of 7.6 Watts. It has a UL-A196, CSA, and C-UL Class I, Division 2 Hazardous Environment ratings, and it is CSA and UL-certified. When operational, the 1746-OB16 has a working temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) at 5 to 95% non-condensing humidity surrounding and it is designed to withstand a 30G operational shock and a 2.5G operational vibration at 57 to 200 Hertz.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1746-OB16
Question: What is the output voltage range of the 1746-OB16 module?
Date Update:04/06/2025
Answer:

The 1746-OB16 module operates within a voltage range of 10 to 50 volts DC. This allows it to accommodate various devices that require different DC voltage levels. However, it's essential to ensure that the connected devices are compatible with this voltage range to prevent potential damage or malfunction.

Question: How many outputs does the 1746-OB16 have, and are they individually isolated?
Date Update:04/06/2025
Answer:

The module features 16 output points grouped into a single common. These outputs are not individually isolated, meaning that all outputs share a common return path. This design simplifies wiring but requires careful consideration to prevent ground loops or unintended current paths in the system.

Question: What are common troubleshooting steps if outputs are not functioning correctly?
Date Update:04/06/2025
Answer:

If the outputs are not operating as expected, consider the following steps:

  • Verify that the module is properly seated in the chassis and that the backplane connectors are clean and undamaged.
  • Check the wiring connections to ensure they are secure and correctly configured.
  • Measure the output voltages to confirm they are within the specified range when activated.
  • Inspect the external fuses (if implemented) to ensure they have not blown due to overcurrent conditions.
  • Examine the PLC program to confirm that the outputs are being correctly addressed and controlled.

If issues persist after these checks, consulting the module's installation manual or contacting Rockwell Automation support may provide further assistance.

Question: Can the 1746-OB16 be used with any SLC 500 chassis?
Date Update:04/06/2025
Answer:

Yes, the 1746-OB16 module is compatible with all SLC 500 series chassis. It can be installed in any available I/O slot, except for the processor slot, which is reserved for the CPU module. When integrating the module, ensure that the total current draw does not exceed the chassis's power supply capabilities.

Question: Why has the 1746-OB16 been discontinued, and what does this mean for users?
Date Update:04/06/2025
Answer:

The 1746-OB16 is scheduled to be discontinued as of September 30, 2024, as announced by Rockwell Automation. This means it will no longer be available for purchase, and users are encouraged to transition to recommended engineering replacement modules. Planning ahead for replacement helps maintain system reliability and ensures continued support for your automation system.

IQElectro is not an authorized distributor.
QElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Allen-Bradley 1746-OB16 is an SLC500 Discrete DC output module. This DC output module features Sixteen (16) DC output channels in One (1) group, providing signal voltages of 24VDC with output voltage range of 10-5-VDC.

 

 

Technical Specifications 

Brand Allen-Bradley
Series SLC500
Part Number 1746-OB16
Manufacturer Rockwell Automation
Continuous current per module, max 6.4 A @ 0...60 °C (32...140 °F)
Continuous current per point 1.5 A @ 30 °C (86 °F) 1.0 A @ 55 °C (131 °F)
Backplane Current at 5.1 Volts 0.135 A
OFF state leakage current 1 mA
Output Delay Time, ON to OFF 0.1 ms
Output Delay Time, OFF to ON 1.0 ms
Operating Voltage Range 10-30VDC
Output Voltage 24VDC output
No. of Outputs 16
Module Type Digital DC Output Module
Voltage Range 10-50 Volts DC Source
Outputs 16
Current/Output 0.5 or 0.25 amps
Current/Module 8 or 4 amps
Backplane Current (5 Volts) 280 milliamps
Current/Module (30 Celsius) 9 amps
Applications High Current
Step Response 60 milliseconds in, 2.5 milliseconds out
Heat Dissipation 7.6 Watts

  

 

Information About 1746-OB16

The Allen-Bradley 1746-OB16 is a Discrete output module that is compatible with for use with the SLC500 product family. This module features Sixteen (16) 24VDC output channels that is used to energize electrical devices for implementing manual and automatic control of the process or machines.

The 1746-OB16P is a single slot module that fits to any slot of an SLC500 chassis except the leftmost module which is reserved for the processor or communication module. The 1746-OB16P has a backplane current draw of 0.250 A at 5VDC and 0 A at 24VDC. It has an OFF state leakage current of 1 mA and load current of 1 mA. Eacu channel has a continuous Current of ) 1.5 A @ 30 °C (86 °F) 1.0 A @ 60 °C (140 °F) and continuous Current per module of 6.4 A @ 0...60 °C (32...140 °F).

The 1746-OB16P does not an output grouping or individual channel isolation. It comes with a single group, compsed of the entire Sixteen (16) channels. Each channel has an ON signal delay of 0.1 ms and OFF signal delay of 1.0 ms with ON-state voltage drop of 1.0V at 1.0 A with surge current per point of 4.0 A at 10 ms and surge current per module of 32.0 A at 10 ms.

The 1746-OB16P may be installed in the local chassis, along the processor or act to a distributed I/O station, along a communication adapter.

The 1746-OB16 SLC 500 Digital DC Output Module by Allen-Bradley is a DC module with sixteen 24V DC outputs and it is lodged in any free slot in the 1746 I/O Chassis. It has 16 output points and a backplane electrical rating of 0.280A at 5 Volts DC and one of 0A at 24V DC. The 1746-OB16 has a load-dependent maximum signal delay time of 1ms for OFF and 0.1ms for ON and a maximum current loss of 1mA in its OFF state. In its ON state, it has a voltage loss of 1.2 Volts at 0.50A and the minimum load each point can carry is 1mA.

The 1746-OB16 has a nominal input current of 0.5A at 30 degrees Celsius and 0.25 A at 60 degrees Celsius for each output point and it has a gross input current of 8A at 30 degrees Celsius and 4A at 60 degrees Celsius per module. It also has a current surge of 3A for 10ms recurring every 1s at 30 degrees Celsius and 2s at 60 degrees Celsius (140 degrees Fahrenheit). The 1746-OB16 provides voltage isolation between the backplane and the outputs tested at 1500 Volts AC and it has a total heat dissipation of 7.6 Watts. It has a UL-A196, CSA, and C-UL Class I, Division 2 Hazardous Environment ratings, and it is CSA and UL-certified. When operational, the 1746-OB16 has a working temperature range of 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) at 5 to 95% non-condensing humidity surrounding and it is designed to withstand a 30G operational shock and a 2.5G operational vibration at 57 to 200 Hertz.



Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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