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Allen Bradley SLC 500 1746-OB8

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1746-OB8

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The Allen-Bradley/Rockwell Automation 1746-OB8 output module is an 8-channel output module from the SLC 500 product line. It dissipates 6.9 Watts of total heat during operation and it dissipates 0.775 Watts of heat per output point. The 1746-OB8 output module is a DC output module with a voltage rating of 24 Volts DC. Its backplane current consumption rating is 0.135 Amps at 5 Volts DC and it is 0 Amps at 24 Volts DC. The 1746-OB8 output module can withstand up to 3 Amps of surge current per output point for up to 10 milliseconds.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1746-OB8

ManufacturerAllen Bradley
CategoryPLCs
Product LineSLC 500
Part Number1746-OB8
GTIN10662073521355
Weight0.50 lbs (0.23 kg)
Module TypeDigital DC Output Module
Voltage Range10-50 Volts DC Source
Outputs8
Current/Output1 or 0.5 amps
Current/Module8 or 4 amps
Backplane Current (5 Volts)135 milliamps
ApplicationsHigh Current
Step Response60 milliseconds in, 2.5 milliseconds out
UPC10662073521355

The Allen-Bradley 1746-OB8 is a DC output module that has 8 outputs but no inputs. It has a voltage category of 24V DC in signal output and its number of points per common is 8. It has a total heat dissipation of 6.9 W and a maximum signal delay of 1A and 8A at 30°C and 0.5A and 4A at 60°C, respectively. Moreover, the maximum off-state leakage of this module is 1mA and the maximum thermal dissipation is 6.9 W. The 1746-OB8 has a maximum On-state voltage drop of 1.2V at 1A and 3A for 10ms maximum surge current per point. It has a backplane current consumption of 135mA at 5V DC and 0 mA at 24V DC. It has minimum load current of 1 mA. Please watch out for transient pulses which can occur when the external DC supply voltage is applied to the output common terminals. Please refer to the user manual for more information about transient pulses. The 1746-OB8 has a design that complies with international standards. It is UL-listed, CE compliant, and CSA and C-Tick certified. It has an operating humidity that ranges from 5 – 95% (non-condensing). When in use, you need to ensure that the temperature does not exceed 60°C or fall below 0°C. You need to store this module in an area that has a temperature range of -40-85°C. The electro-optical insulation between the I/O terminals and control logic device of this module is 1500 V. Therefore, it can be configured easily through your computer.

Revision Part #Also known as
1746-OB8 Ser A1746-OB8/A, Series A, Rev A
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