1756-OB8EI - In Stock | Allen Bradley PLC ControlLogix

1756-OB8EI

Rated 4.8 with 14 reviews

DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty

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.

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.


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1756-OB8EI

Revisions: Ser A 
Description: The Allen-Bradley 1756-OB8EI is a ControlLogix Discrete output module that features Eight (8) electronically fused, individually isolated non-isolated sourcing output channels. It has One (1) group of channels with Eight (8) outputs per channel. It delivers a nominal actuating voltage of 24VDC and compatible with any POINT IO communication adapter for implementing distributed I/O architecture. This module requires 1734-TB or 1734-TBS wiring base assembly.
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Description: The Allen-Bradley 1756-OB8EI is a ControlLogix Discrete output module that features Eight (8) electronically fused, individually isolated non-isolated sourcing output channels. It has One (1) group of channels with Eight (8) outputs per channel. It delivers a nominal actuating voltage of 24VDC and compatible with any POINT IO communication adapter for implementing distributed I/O architecture. This module requires 1734-TB or 1734-TBS wiring base assembly.

DO Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with DO Supply's 1-year warranty

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.

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better business bureau
Revisions: Ser A 

Warranty: 1 year DO Supply Warranty Included
Shipping: Worldwide shipping via UPS, DHL, and TNT
Repairs: We offer repair service for the 1756-OB8EI.
Exchange: Exchange credit for your defective unit available.
Conditions: We sell preowned surplus and refurbished parts.

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Rated 4.8 with 14 reviews

    Technical Specifications for 1756-OB8EI

ManufacturerRockwell Automation
BrandAllen-Bradley
Removable Terminal Block1756-TBCH; 1756-TBS6H
Enclosure type ratingNone (open-style)
Output Signal delay, ON to OFF5 ms max
Output Signal delay, OFF to ON1 ms, max
Power Dissipation4.7 W @ 60 °C (140 °F)
Backplane Current, 24VDC2 mA
Backplane Current, 5.1VDC250 mA
Output Current per module, max.10 A @ 60 °C (140 °F); 16 A @ 55 °C (131 °F) linear derating
Output Current per channel, nom.2 A @ 60 °C (140 °F)
Output Voltage range10-30VDC
Output Voltage24VDC
No. of outputsEight (8) Electronically-fused, individually isolated channels
Part Number/Catalog No.1756-OB8EI
SeriesControlLogix
Module TypeDigital DC Sourcing Output
Outputs8-Point Individually Isolated, Electronically Fused
Voltage12-24 Volts DC
Operating Voltage Range10-30 Volts DC
Maximum Output Current Rating-Point2 Amps at 60 degrees Celsius
Maximum Output Current Rating-Module16 Amps at 55 degrees Celsius, 10 Amps at 60 Celsius
Power Dissipation (Max)4.7 Watts at 60 Celsius
Backplane Current at 5 Volts250 milliamps
Removeable Terminal Block(s)1756-TBCH, 1756-TBS6H
Isolation Voltage50 Volts Continuous
EnclosureNone
ManufacturerRockwell Automation
BrandAllen-Bradley
Removable Terminal Block1756-TBCH; 1756-TBS6H
Enclosure type ratingNone (open-style)
Output Signal delay, ON to OFF5 ms max
Output Signal delay, OFF to ON1 ms, max
Power Dissipation4.7 W @ 60 °C (140 °F)
Backplane Current, 24VDC2 mA
Backplane Current, 5.1VDC250 mA
Output Current per module, max.10 A @ 60 °C (140 °F); 16 A @ 55 °C (131 °F) linear derating
Output Current per channel, nom.2 A @ 60 °C (140 °F)
Output Voltage range10-30VDC
Output Voltage24VDC
No. of outputsEight (8) Electronically-fused, individually isolated channels
Part Number/Catalog No.1756-OB8EI
SeriesControlLogix
Module TypeDigital DC Sourcing Output
Outputs8-Point Individually Isolated, Electronically Fused
Voltage12-24 Volts DC
Operating Voltage Range10-30 Volts DC
Maximum Output Current Rating-Point2 Amps at 60 degrees Celsius
Maximum Output Current Rating-Module16 Amps at 55 degrees Celsius, 10 Amps at 60 Celsius
Power Dissipation (Max)4.7 Watts at 60 Celsius
Backplane Current at 5 Volts250 milliamps
Removeable Terminal Block(s)1756-TBCH, 1756-TBS6H
Isolation Voltage50 Volts Continuous
EnclosureNone
s

About 1756-OB8EI

The Allen-Bradley 1756-OB8EI is a discrete output module from the ControlLogix product family. This module features Eight (8) electronically fused and individually isolated output channels that is able to deliver 24VDC nominal voltage output, with output voltage range of 10-30VDC. This module is generally used to energize electrical loads such as relay coils, pilot lamps, buzzer, horn, siren, valves and other actuating devices.

The 1756-OB8EI is directly installed to an available slot of the 1756 ControlLogix chassis. It occupies a single slot and permits multiple instances of the same module whether on a local or distributed I/O rack. It draws backplane current of 250 mA at 5.1VDC and 2 mA at 24VDC and consumes total backplane power of 1.30 W. This module has a power dissipation of 4.7 W when operated at 60 Deg. Celsius.

The 1756-OB8EI has an output current rating of 2 A @ 60 °C (140 °F) per point while the total current per module are 10 A @ 60 °C (140 °F) and 16 A @ 55 °C (131 °F), linear derating. It has a Surge current rating of 4 A for 10 ms each, repeatable every 2 s. The 1756-OB8EI has an OFF to ON delay time of 1 ms, maximum and ON to OFF delay time of 5 ms, maximum.

The 1756-OB8EI is used with a Removable Terminal Block (RTB) where signal wires are terminated. Compatible terminal blocks are 1756-TBCH and 1756-TBS6H.

This module has an operating voltage of 10-30V DC and a voltage category of 12-24V DC sink/source. It has a short trip of greater than 4.5 A for a maximum of 500 µs (output on, then short) and greater than 4.5 A for a maximum of 1.5 ms (output on into short), with a +/- 1 ms timestamp of diagnostics. It has a current draw of 250 mA at 5.1V and 2 mA at 24V. The module's total backplane power is 1.30 W with a maximum thermal dissipation of 16.03 BTU/hr. The module has a maximum off-state leakage current of 1 mA per point and a maximum voltage drop of 1.2V DC at 2 A. It also has a maximum current per point of 2A at 60 degrees Celsius and a maximum current per module of 10A at 60 Degrees Celsius and of 16A at 55 Degrees Celsius (linear derating). It has a surge current per-point of 4 A for 10 ms that is repeatable every 2s and with a 3 mA load current minimum. It also has a continuous isolation voltage of 250V and this module is routine-tested for 2s at 1350V. The 1756-OB8EI allows you the option of holding the last state and turning on or turning off the states in Fault Mode or Program Mode. Note that the default setting for both is “Off.” It also has an output delay time of a maximum of 1 m from off to on and a maximum of 5 ms from on to off. Its operating temperature has a range of 0-60 degrees Celsius, while its non-operating temperature has a range of -40-85 degrees Celsius. It also has a maximum surrounding air temperature of 60 degrees Celsius and a non-condensing relative humidity level of 5-95%.

FAQ for 1756-OB8EI

What is the main advantage being offered by the 1756-OB8EI?


The 1756-OB8EI’s main advantage is that it is designed with electronically fused, individually isolated output channels.

Does the 1756-OB8EI can be used in redundant controller configuration?


Yes. It can be used in all configurations and architectures supported by ControlLogix platform.

Does the 1756-OB8EI uses Removable Terminal Block (RTB) for termination of signal wires?


Yes. It uses 1756-TBCH and 1756-TBS6H RTB.

Technical Description of 1756-OB8EI

Allen Bradley ControlLogix Isolated Electronic Fused DC Output Module with 8-Point Individually Isolated, Electronically Fused Outputs

Repair Services for 1756-OB8EI

Type Lead Time Price Action
Repair Service 2-4 weeks $416cartAdd to Cart

Our highly skilled technicians can repair your ControlLogix 1756-OB8EI. All our repairs come with a 1 Year Warranty. Please contact us for additional information about our repair process.

Revisions for 1756-OB8EI

Please refer to the manual for more information about the 1756-OB8EI such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1756-OB8EI Ser A
1756-OB8EI/A, Series A, Rev A Request Quote
Common misspellings:
  • l756-OB8EI
  • 1756-0B8EI
  • 1756-O88EI
  • 1756-OBbEI
  • 1756OB8EI

Reviews for 1756-OB8EI

Internal Review

"The Allen-Bradley 1756-OB8EI is an Allen-Bradley discrete output module. This module is features Eight (8) individually isolated and electronically fused output channels. Compared to 1756-OB8 with Two (2) output groups without individual isolation, the 1756-OB8EI is ideally used in installation where outputs require individual common terminals. Additionally, the electronic fusing integrated with this module eliminates the need of installing external fusing. " -DO Supply Tech

Dimensions For 1756-OB8EI

Size
Input Type
Panel Cutout Height in mm
Panel Cutout Width in mm
Terminal Height in mm
Terminal Width in mm
Terminal Overall Depth in mm
Terminal Mounted Depth in mm

Dimensions For 1756-OB8EI

Resolutions For 1756-OB8EI

About

Technical Specifications for 1756-OB8EI

ManufacturerRockwell Automation
BrandAllen-Bradley
Removable Terminal Block1756-TBCH; 1756-TBS6H
Enclosure type ratingNone (open-style)
Output Signal delay, ON to OFF5 ms max
Output Signal delay, OFF to ON1 ms, max
Power Dissipation4.7 W @ 60 °C (140 °F)
Backplane Current, 24VDC2 mA
Backplane Current, 5.1VDC250 mA
Output Current per module, max.10 A @ 60 °C (140 °F); 16 A @ 55 °C (131 °F) linear derating
Output Current per channel, nom.2 A @ 60 °C (140 °F)
Output Voltage range10-30VDC
Output Voltage24VDC
No. of outputsEight (8) Electronically-fused, individually isolated channels
Part Number/Catalog No.1756-OB8EI
SeriesControlLogix
Module TypeDigital DC Sourcing Output
Outputs8-Point Individually Isolated, Electronically Fused
Voltage12-24 Volts DC
Operating Voltage Range10-30 Volts DC
Maximum Output Current Rating-Point2 Amps at 60 degrees Celsius
Maximum Output Current Rating-Module16 Amps at 55 degrees Celsius, 10 Amps at 60 Celsius
Power Dissipation (Max)4.7 Watts at 60 Celsius
Backplane Current at 5 Volts250 milliamps
Removeable Terminal Block(s)1756-TBCH, 1756-TBS6H
Isolation Voltage50 Volts Continuous
EnclosureNone
ManufacturerRockwell Automation
BrandAllen-Bradley
Removable Terminal Block1756-TBCH; 1756-TBS6H
Enclosure type ratingNone (open-style)
Output Signal delay, ON to OFF5 ms max
Output Signal delay, OFF to ON1 ms, max
Power Dissipation4.7 W @ 60 °C (140 °F)
Backplane Current, 24VDC2 mA
Backplane Current, 5.1VDC250 mA
Output Current per module, max.10 A @ 60 °C (140 °F); 16 A @ 55 °C (131 °F) linear derating
Output Current per channel, nom.2 A @ 60 °C (140 °F)
Output Voltage range10-30VDC
Output Voltage24VDC
No. of outputsEight (8) Electronically-fused, individually isolated channels
Part Number/Catalog No.1756-OB8EI
SeriesControlLogix
Module TypeDigital DC Sourcing Output
Outputs8-Point Individually Isolated, Electronically Fused
Voltage12-24 Volts DC
Operating Voltage Range10-30 Volts DC
Maximum Output Current Rating-Point2 Amps at 60 degrees Celsius
Maximum Output Current Rating-Module16 Amps at 55 degrees Celsius, 10 Amps at 60 Celsius
Power Dissipation (Max)4.7 Watts at 60 Celsius
Backplane Current at 5 Volts250 milliamps
Removeable Terminal Block(s)1756-TBCH, 1756-TBS6H
Isolation Voltage50 Volts Continuous
EnclosureNone

About 1756-OB8EI

The Allen-Bradley 1756-OB8EI is a discrete output module from the ControlLogix product family. This module features Eight (8) electronically fused and individually isolated output channels that is able to deliver 24VDC nominal voltage output, with output voltage range of 10-30VDC. This module is generally used to energize electrical loads such as relay coils, pilot lamps, buzzer, horn, siren, valves and other actuating devices.

The 1756-OB8EI is directly installed to an available slot of the 1756 ControlLogix chassis. It occupies a single slot and permits multiple instances of the same module whether on a local or distributed I/O rack. It draws backplane current of 250 mA at 5.1VDC and 2 mA at 24VDC and consumes total backplane power of 1.30 W. This module has a power dissipation of 4.7 W when operated at 60 Deg. Celsius.

The 1756-OB8EI has an output current rating of 2 A @ 60 °C (140 °F) per point while the total current per module are 10 A @ 60 °C (140 °F) and 16 A @ 55 °C (131 °F), linear derating. It has a Surge current rating of 4 A for 10 ms each, repeatable every 2 s. The 1756-OB8EI has an OFF to ON delay time of 1 ms, maximum and ON to OFF delay time of 5 ms, maximum.

The 1756-OB8EI is used with a Removable Terminal Block (RTB) where signal wires are terminated. Compatible terminal blocks are 1756-TBCH and 1756-TBS6H.

This module has an operating voltage of 10-30V DC and a voltage category of 12-24V DC sink/source. It has a short trip of greater than 4.5 A for a maximum of 500 µs (output on, then short) and greater than 4.5 A for a maximum of 1.5 ms (output on into short), with a +/- 1 ms timestamp of diagnostics. It has a current draw of 250 mA at 5.1V and 2 mA at 24V. The module's total backplane power is 1.30 W with a maximum thermal dissipation of 16.03 BTU/hr. The module has a maximum off-state leakage current of 1 mA per point and a maximum voltage drop of 1.2V DC at 2 A. It also has a maximum current per point of 2A at 60 degrees Celsius and a maximum current per module of 10A at 60 Degrees Celsius and of 16A at 55 Degrees Celsius (linear derating). It has a surge current per-point of 4 A for 10 ms that is repeatable every 2s and with a 3 mA load current minimum. It also has a continuous isolation voltage of 250V and this module is routine-tested for 2s at 1350V. The 1756-OB8EI allows you the option of holding the last state and turning on or turning off the states in Fault Mode or Program Mode. Note that the default setting for both is “Off.” It also has an output delay time of a maximum of 1 m from off to on and a maximum of 5 ms from on to off. Its operating temperature has a range of 0-60 degrees Celsius, while its non-operating temperature has a range of -40-85 degrees Celsius. It also has a maximum surrounding air temperature of 60 degrees Celsius and a non-condensing relative humidity level of 5-95%.

FAQ for 1756-OB8EI

What is the main advantage being offered by the 1756-OB8EI?


The 1756-OB8EI’s main advantage is that it is designed with electronically fused, individually isolated output channels.

Does the 1756-OB8EI can be used in redundant controller configuration?


Yes. It can be used in all configurations and architectures supported by ControlLogix platform.

Does the 1756-OB8EI uses Removable Terminal Block (RTB) for termination of signal wires?


Yes. It uses 1756-TBCH and 1756-TBS6H RTB.

Technical Description of 1756-OB8EI

Allen Bradley ControlLogix Isolated Electronic Fused DC Output Module with 8-Point Individually Isolated, Electronically Fused Outputs
Repairs
Type Lead Time Price Action
Repair Service 2-4 weeks $416cartAdd to Cart

Our highly skilled technicians can repair your ControlLogix 1756-OB8EI. All our repairs come with a 1 Year Warranty. Please contact us for additional information about our repair process.

Type Lead Time Price Action
Repair Service 2-4 weeks $416cartAdd to Cart

Our highly skilled technicians can repair your ControlLogix 1756-OB8EI. All our repairs come with a 1 Year Warranty. Please contact us for additional information about our repair process.

Revisions

Please refer to the manual for more information about the 1756-OB8EI such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1756-OB8EI Ser A
1756-OB8EI/A, Series A, Rev A Request Quote

Common misspellings:
  • l756-OB8EI
  • 1756-0B8EI
  • 1756-O88EI
  • 1756-OBbEI
  • 1756OB8EI
PDF
Reviews

Reviews for 1756-OB8EI

Internal Review

"The Allen-Bradley 1756-OB8EI is an Allen-Bradley discrete output module. This module is features Eight (8) individually isolated and electronically fused output channels. Compared to 1756-OB8 with Two (2) output groups without individual isolation, the 1756-OB8EI is ideally used in installation where outputs require individual common terminals. Additionally, the electronic fusing integrated with this module eliminates the need of installing external fusing. " -DO Supply Tech