1747-L20A - In Stock | Allen Bradley PLC SLC 500

1747-L20A

Rated 4.2 with 12 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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1747-L20A

Revisions: Ser A Ser B Ser C 
Description: The 1747-L20A is an Allen-Bradley enhanced SLC 500 Fixed Hardware Style Programmable Logic Controller (PLC). This controller has an embedded capacitor-backed RAM with a memory size of 1K instruction capacity. It has a typical scan time of 8 milliseconds/1K and bit execution of 4 microseconds. It has twelve (12) embedded 120 Volt AC Discrete inputs; eight (8) AC/DC Relay outputs with line power of 120/240 Volts AC nominal supply.
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Description: The 1747-L20A is an Allen-Bradley enhanced SLC 500 Fixed Hardware Style Programmable Logic Controller (PLC). This controller has an embedded capacitor-backed RAM with a memory size of 1K instruction capacity. It has a typical scan time of 8 milliseconds/1K and bit execution of 4 microseconds. It has twelve (12) embedded 120 Volt AC Discrete inputs; eight (8) AC/DC Relay outputs with line power of 120/240 Volts AC nominal supply.

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 Ser B Ser C 

Warranty: 1 year DO Supply Warranty Included
Shipping: Worldwide shipping via UPS, DHL, and TNT
Repairs: We offer repair service for the 1747-L20A.
Exchange: Exchange credit for your defective unit available.
Conditions: We sell preowned surplus and refurbished parts.

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Rated 4.2 with 12 reviews

    Technical Specifications for 1747-L20A

ManufacturerRockwell Automation
Maximum Power requirement50 VA
Discrete outputsEight (8) AC/DC relay
Discrete inputsTwelve (12) 120 VAC
Power Supply hold-up time20 - 70 ms
Integral fuse1.25 A
Power supply Inrush rating30 Amperes
Memory typeCapacitor backed-up
Bit execution4 microseconds
Typical scan time8 miliseconds / 1K
Controller memory1K instruction capacity
BrandAllen-Bradley
Part Number/Catalog No.1747-L20A
Module TypeSLC 500 Fixed Style Hardware
SeriesSLC 500
Inputs(12) 120 V AC
Outputs8 AC/DC Relay
Line Power120-240 Volts AC
High-Speed CounterNo
CableBelden 9463
Connectors6-Pin Phoenix Connector
Weight0.37 pounds (168 grams)
Dimensions5.72 x 1.37 x 5.15 inches
Operating Temperature0-60 Celsius
ManufacturerRockwell Automation
Maximum Power requirement50 VA
Discrete outputsEight (8) AC/DC relay
Discrete inputsTwelve (12) 120 VAC
Power Supply hold-up time20 - 70 ms
Integral fuse1.25 A
Power supply Inrush rating30 Amperes
Memory typeCapacitor backed-up
Bit execution4 microseconds
Typical scan time8 miliseconds / 1K
Controller memory1K instruction capacity
BrandAllen-Bradley
Part Number/Catalog No.1747-L20A
Module TypeSLC 500 Fixed Style Hardware
SeriesSLC 500
Inputs(12) 120 V AC
Outputs8 AC/DC Relay
Line Power120-240 Volts AC
High-Speed CounterNo
CableBelden 9463
Connectors6-Pin Phoenix Connector
Weight0.37 pounds (168 grams)
Dimensions5.72 x 1.37 x 5.15 inches
Operating Temperature0-60 Celsius
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About 1747-L20A

The 1747-L20A SLC 500 Fixed Controller by Allen-Bradley is a 20 I/O-point controller in the SLC 500 fixed controller family with twelve 120V AC inputs and eight AC/DC relay outputs and requires a line power of 120-240 Volts. The controller features a 1K instruction programming memory with a 2-week capacitor life (and a 5-year lifespan) lithium battery-backed standard RAM with an EEPROM or UVPROM backup options. The 1747-L20A has a program scan time of 8ms per 1K instruction and a load-dependent hold-up time of 20-700ms between scans. This controller does not have a high-speed counter. The 1747-L20A offers a fuse protection of 1.25A at a voltage range of 120-240V AC and it has 5 status lights that indicate POWER, PC RUN, CPU FAULT, FORCED I/O, and BATTERY LOW statuses. The indicator’s circuit uses the 24 AWG wire size. The 1747-L20A uses a panel mount and supports two slot expansion racks for I/O expansion capability. It operates at 0-60 0C at 5-95% non-condensing relative humidity and it can withstand 30G and 2.5G of operational shock and vibration respectively at 10-500Hz.The 1747-L20A measures at 3.6 x 5.5 x 5.7 inches with a weight of nearly 0.4 pounds while the single slot has a dimension of 1.37 x 5.15 x 5.72 inches which weighs 2.5 pounds.

The Allen-Bradley 1747-L20A is a Programmable Logic Controller (PLC) from Allen-Bradley. It is part of the SLC 500 Fixed Style Hardware series that comes with embedded features, functioning as a full PLC assembly. This module comes with a capacitor-backed up Random Access Memory (RAM) with memory size of 1K instruction capacity. The 1747-L20A has a typical scan time of 8 milliseconds/1K and a bit execution speed of 4 microseconds.

This controller has a line voltage requirement of 120/240 Volts AC. It has embedded input and output channels - specifically, twelve (12) 120 Volt AC rated discrete input channels and eight (8) AC/DC relay outputs. Optionally, the embedded memory available to this device can be partnered with an EEPROM or UVPROM memory backup option. Similarly, an optional battery backup may be installed to retain the RAM memory contents longer as the embedded capacitor backup can only provide memory backup power of up to 30 days. With the use of a battery, up to 5 years of RAM backup can be achieved. Compatible battery for use with this controller is the 1747-BA.

The 1747-L20A is provided with LED indicators embedded within the module’s front panel. LED indicators include POWER, PC RUN, CPU FAULT, FORCED I/O, and BATTERY LOW. This controller has an embedded power supply with an operating voltage of 85-265 Volts AC @ 47-63 Hertz. It is also provided with a pre-installed fuse with a rating of 1.25 Amperes. The controller’s Power Hold-up time range is 20 milliseconds to 700 milliseconds and inrush current rating is 30 Amperes.

FAQ for 1747-L20A

What is the line voltage requirement of the 1747-L20A?


The 1747-L20A is powered by an input supply range of 85-265 VAC.

What are the embedded I/O channels of the 1747-L20A?


The 1747-L20A has 12 120 VAC input and 8 AC / DC Relay outputs.

What is the embedded memory size of the 1747-L20A?


The 1747-L20A has 1K instruction capacity.

Technical Description of 1747-L20A

The Allen-Bradley 1747-L20A is a SLC 500 Fixed Controller. This Fixed Controller has (12) 120 V AC Inputs, 8 AC/DC Relay Outputs and 120-240 Volts AC Line Power.

Repair Services for 1747-L20A

Type Lead Time Price Action
Repair Service 2-4 weeks $562cartAdd to Cart

Our highly skilled technicians can repair your SLC 500 1747-L20A. All of our repairs come with a 1 Year Warranty. Please contact us for additional information.

Revisions for 1747-L20A

Please refer to the manual for more information about the 1747-L20A such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1747-L20A Ser A
1747-L20A/A, Series A, Rev A Request Quote
1747-L20A Ser B
1747-L20A/B, Series B, Rev B Request Quote
1747-L20A Ser C
1747-L20A/C, Series C, Rev C Request Quote
Common misspellings:
  • l747-L20A
  • 17A7-L20A
  • 1747-120A
  • 1747-L2oA
  • 1747L20A
  • 1746-L20A

Reviews for 1747-L20A

Fixed Inputs

"With 12 inputs, this module has the least of the fixed controllers. Nonetheless, this is still appropriate for the right application. " -DO Supply Tech

Fixed Outputs

"The lowest number of output available from the fixed SLC 500 series, still just as useful in the correct process. " -DO Supply Tech

High-speed Counter Adaptable

"This fixed controller will not operate with a high speed counter. " -DO Supply Tech

Internal Review

"The Allen-Bradley 1747-L20A is an SLC 500 controller from the fixed hardware style category. This controller is a compact controller, with embedded power supply and I/O channels, allowing it to operate as full-functional PLC. This controller is ideally used for small automation requirement as it has the least I/O density among the fixed style hardware controllers. " -DO Supply Tech

Dimensions For 1747-L20A

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 1747-L20A

Resolutions For 1747-L20A

About

Technical Specifications for 1747-L20A

ManufacturerRockwell Automation
Maximum Power requirement50 VA
Discrete outputsEight (8) AC/DC relay
Discrete inputsTwelve (12) 120 VAC
Power Supply hold-up time20 - 70 ms
Integral fuse1.25 A
Power supply Inrush rating30 Amperes
Memory typeCapacitor backed-up
Bit execution4 microseconds
Typical scan time8 miliseconds / 1K
Controller memory1K instruction capacity
BrandAllen-Bradley
Part Number/Catalog No.1747-L20A
Module TypeSLC 500 Fixed Style Hardware
SeriesSLC 500
Inputs(12) 120 V AC
Outputs8 AC/DC Relay
Line Power120-240 Volts AC
High-Speed CounterNo
CableBelden 9463
Connectors6-Pin Phoenix Connector
Weight0.37 pounds (168 grams)
Dimensions5.72 x 1.37 x 5.15 inches
Operating Temperature0-60 Celsius
ManufacturerRockwell Automation
Maximum Power requirement50 VA
Discrete outputsEight (8) AC/DC relay
Discrete inputsTwelve (12) 120 VAC
Power Supply hold-up time20 - 70 ms
Integral fuse1.25 A
Power supply Inrush rating30 Amperes
Memory typeCapacitor backed-up
Bit execution4 microseconds
Typical scan time8 miliseconds / 1K
Controller memory1K instruction capacity
BrandAllen-Bradley
Part Number/Catalog No.1747-L20A
Module TypeSLC 500 Fixed Style Hardware
SeriesSLC 500
Inputs(12) 120 V AC
Outputs8 AC/DC Relay
Line Power120-240 Volts AC
High-Speed CounterNo
CableBelden 9463
Connectors6-Pin Phoenix Connector
Weight0.37 pounds (168 grams)
Dimensions5.72 x 1.37 x 5.15 inches
Operating Temperature0-60 Celsius

About 1747-L20A

The 1747-L20A SLC 500 Fixed Controller by Allen-Bradley is a 20 I/O-point controller in the SLC 500 fixed controller family with twelve 120V AC inputs and eight AC/DC relay outputs and requires a line power of 120-240 Volts. The controller features a 1K instruction programming memory with a 2-week capacitor life (and a 5-year lifespan) lithium battery-backed standard RAM with an EEPROM or UVPROM backup options. The 1747-L20A has a program scan time of 8ms per 1K instruction and a load-dependent hold-up time of 20-700ms between scans. This controller does not have a high-speed counter. The 1747-L20A offers a fuse protection of 1.25A at a voltage range of 120-240V AC and it has 5 status lights that indicate POWER, PC RUN, CPU FAULT, FORCED I/O, and BATTERY LOW statuses. The indicator’s circuit uses the 24 AWG wire size. The 1747-L20A uses a panel mount and supports two slot expansion racks for I/O expansion capability. It operates at 0-60 0C at 5-95% non-condensing relative humidity and it can withstand 30G and 2.5G of operational shock and vibration respectively at 10-500Hz.The 1747-L20A measures at 3.6 x 5.5 x 5.7 inches with a weight of nearly 0.4 pounds while the single slot has a dimension of 1.37 x 5.15 x 5.72 inches which weighs 2.5 pounds.

The Allen-Bradley 1747-L20A is a Programmable Logic Controller (PLC) from Allen-Bradley. It is part of the SLC 500 Fixed Style Hardware series that comes with embedded features, functioning as a full PLC assembly. This module comes with a capacitor-backed up Random Access Memory (RAM) with memory size of 1K instruction capacity. The 1747-L20A has a typical scan time of 8 milliseconds/1K and a bit execution speed of 4 microseconds.

This controller has a line voltage requirement of 120/240 Volts AC. It has embedded input and output channels - specifically, twelve (12) 120 Volt AC rated discrete input channels and eight (8) AC/DC relay outputs. Optionally, the embedded memory available to this device can be partnered with an EEPROM or UVPROM memory backup option. Similarly, an optional battery backup may be installed to retain the RAM memory contents longer as the embedded capacitor backup can only provide memory backup power of up to 30 days. With the use of a battery, up to 5 years of RAM backup can be achieved. Compatible battery for use with this controller is the 1747-BA.

The 1747-L20A is provided with LED indicators embedded within the module’s front panel. LED indicators include POWER, PC RUN, CPU FAULT, FORCED I/O, and BATTERY LOW. This controller has an embedded power supply with an operating voltage of 85-265 Volts AC @ 47-63 Hertz. It is also provided with a pre-installed fuse with a rating of 1.25 Amperes. The controller’s Power Hold-up time range is 20 milliseconds to 700 milliseconds and inrush current rating is 30 Amperes.

FAQ for 1747-L20A

What is the line voltage requirement of the 1747-L20A?


The 1747-L20A is powered by an input supply range of 85-265 VAC.

What are the embedded I/O channels of the 1747-L20A?


The 1747-L20A has 12 120 VAC input and 8 AC / DC Relay outputs.

What is the embedded memory size of the 1747-L20A?


The 1747-L20A has 1K instruction capacity.

Technical Description of 1747-L20A

The Allen-Bradley 1747-L20A is a SLC 500 Fixed Controller. This Fixed Controller has (12) 120 V AC Inputs, 8 AC/DC Relay Outputs and 120-240 Volts AC Line Power.
Repairs
Type Lead Time Price Action
Repair Service 2-4 weeks $562cartAdd to Cart

Our highly skilled technicians can repair your SLC 500 1747-L20A. All of our repairs come with a 1 Year Warranty. Please contact us for additional information.

Type Lead Time Price Action
Repair Service 2-4 weeks $562cartAdd to Cart

Our highly skilled technicians can repair your SLC 500 1747-L20A. All of our repairs come with a 1 Year Warranty. Please contact us for additional information.

Revisions

Please refer to the manual for more information about the 1747-L20A such as the wiring diagrams, data sheets and migration or obsolescence details.

Revision Part # Also Known as Availability
1747-L20A Ser A
1747-L20A/A, Series A, Rev A Request Quote
1747-L20A Ser B
1747-L20A/B, Series B, Rev B Request Quote
1747-L20A Ser C
1747-L20A/C, Series C, Rev C Request Quote

Common misspellings:
  • l747-L20A
  • 17A7-L20A
  • 1747-120A
  • 1747-L2oA
  • 1747L20A
PDF
Reviews

Reviews for 1747-L20A

Fixed Inputs

"With 12 inputs, this module has the least of the fixed controllers. Nonetheless, this is still appropriate for the right application. " -DO Supply Tech

Fixed Outputs

"The lowest number of output available from the fixed SLC 500 series, still just as useful in the correct process. " -DO Supply Tech

High-speed Counter Adaptable

"This fixed controller will not operate with a high speed counter. " -DO Supply Tech

Internal Review

"The Allen-Bradley 1747-L20A is an SLC 500 controller from the fixed hardware style category. This controller is a compact controller, with embedded power supply and I/O channels, allowing it to operate as full-functional PLC. This controller is ideally used for small automation requirement as it has the least I/O density among the fixed style hardware controllers. " -DO Supply Tech