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About the Allen-Bradley 1747
The 1747 series is a compact modular control platform designed for reliable discrete and process automation. Built for straightforward installation and flexible I/O expansion, it supports ladder-based programming and common industrial communications, making it a practical choice for retrofits and small-to-medium control systems.

Allen-Bradley,1747-L532,Processor Unit 1747-0S300 Ser A FRN 2 Broken Door
- Manufacturer: Allen-Bradley
- Model: 1747-L532
Used in good condition. Part was pulled from operation upon factory shutdown and has been in storage since. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multi...
$160 USDGalion, OH
Allen-Bradley,1747-L531,Ser E Rev 8 Processor Unit 1747-OS302 Ser C FRN 6
- Manufacturer: Allen-Bradley
- Model: 1747-L531
Used in good condition. Part was pulled from operation upon factory shutdown and has been in storage since. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multi...
$128 USDGalion, OH
Allen-Bradley,1747-L542,Ser A FAC 1M Processor Unit 1747-0S401 Ser B FRN 7
- Manufacturer: Allen-Bradley
- Model: 1747
Used in good condition. Part was pulled from operation upon factory shutdown and has been in storage since. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multi...
$104 USDGalion, OH
ALLEN BRADLEY,1747-L541,SER C PROC. REV 7 PROCESSOR UNIT 1747-OS401 SER C FRN 4
- Manufacturer: Allen-Bradley
- Model: 1747
Used in good condition. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictures to make s...
$140 USDGalion, OH
ALLEN BRADLEY,1747-L541,SER C PROC. REV 7 PROCESSOR UNIT 1747-OS401 SER C FRN 5
- Manufacturer: Allen-Bradley
- Model: 1747
Used in good condition. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictures to make s...
$140 USDGalion, OH
Allen-Bradley,1747-L524,Ser C FRN 7 FAC 1M SLC 500 Processor Unit
- Manufacturer: Allen-Bradley
- Model: 1747
Used. Please see pictures for details and condition. Please check out our store to view additional listings. We hope to deal with you very soon! Bin 222
$48 USDGalion, OH- Trusted Seller
ALLEN BRADLEY 1747-L542 PROCESSOR MODULE ($220 OBO)
- Manufacturer: Allen-Bradley
- Model: 1747-L542
“USED, EXCELLENT” ALLEN BRADLEY 1747-L542 PROCESSOR MODULE 5-24 VDC 32K 0.9 MS/K SLC 500 SERIES 1000 MA 200 MA ***Local deliveries available, simply message us before purchasing so we can properly adjust the list...
$220 USDWaukesha, WI - Trusted Seller

ALLEN BRADLEY 1747-L532 Processor Module Series D Used
- Manufacturer: Allen-Bradley
- Model: 1747-L532
Processor Unit Expedited shipping services are available upon request. All taxes due are the responsibility of purchaser. Visitors are welcome to inspect equipment prior to purchase. This piece is located at ...
$90 USDHolly, MI - Trusted Seller

ALLEN BRADLEY 1747-L531 SER E Processor Unit Used
- Manufacturer: Allen-Bradley
- Model: 1747-L531
Series E SLC 500 Expedited shipping services are available upon request. All taxes due are the responsibility of purchaser. Visitors are welcome to inspect equipment prior to purchase. This piece is located ...
$82 USDHolly, MI - Trusted Seller

Allen-Bradley 1747-L541 SLC 500 Processor Unit
- Manufacturer: Allen-Bradley
- Model: 1747
PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...
$135 USDSuwanee, GA - Trusted Seller

NEW OPEN BOX AB 1747-L541 SER C ALLEN BRADLEY SLC500 PROCESSOR UNIT STK L809CC
- Manufacturer: Allen-Bradley
- Model: 1747
NEW OPEN BOX AB 1747-L541 SER C ALLEN BRADLEY SLC500 PROCESSOR UNIT STK L809CC
$285 USDMontgomeryville, PA ERI... Allen-Bradley 1747-L542/A Processor/Controller. Loc3A11
- Manufacturer: Allen-Bradley
- Model: 1747-L542
Allen-Bradley 1747-L542/A Processor/Controller ##Without front cover and there is a small broken part *see fotos## Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Us...
$89 USDDuncan, SC
ALLEN BRADLEY 1747-L30A PROCESSOR UNIT TESTED READ
- Manufacturer: Allen-Bradley
- Model: 1747
ALLEN BRADLEY 1747-L30A SER C, FRN 6 PLC PROCESSOR UNIT TESTED, WORKING SATISFACTION GUARANTEE Small chip in plastic as shown in picture #3
$45 USDRutherfordton, NC- Trusted Seller

Allen Bradley SLC 500 1747-L511 Processor Unit
- Manufacturer: Allen-Bradley
- Model: 1747
PLEASE REVIEW: We would ask that potential buyers please examine the photographs carefully, and understand what you are buying. All questions must be submitted PRIOR to auction close. *Your purchase includes a 30...
$55 USDSuwanee, GA 
SURPLUS ALLEN BRADLEY 1747-L551 /C CPU PROCESSOR UNIT
- Manufacturer: Allen-Bradley
- Model: 1747-L551
ALLEN BRADLEY 1747-L551 /C REV B CPU PROCESSOR UNIT FRN 11 SLC 500 SERIES SLC 5/05 CONTROLLER 5-24 VDC 16K 1000 MA 200 MA 8192 DIGITIAL I/O MAX RSLOGIX 500 ETHERNET AND RS-232 FLASH EEPROM 0.9 MS/K 3/30 LOCAL CHA...
$1,100 USDRutherfordton, NC

