Industrial Automation » Programmable Logic Controllers (PLC)

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Used modulators

  • Trusted Seller
    Allen-bradley 1746-ib16 Slc Input Module.

    Allen-bradley 1746-ib16 Slc Input Module.

    • Manufacturer: Allen-Bradley
    • Model: 1746-IB16

    New Open Box, Quantity 1 Name: Allen-bradley 1746-ib16 Slc Input Module. | Arrival date: 07-22-2025 | Dimensions l x w x h (inches): 11 x 9 x 7 | Weight (lb.): 6 | Available quantity: 1

    $100 USD
    Euclid, OH
  • Trusted Seller
    Allen Bradley Slc-500 16-input Module

    Allen Bradley Slc-500 16-input Module

    • Manufacturer: Allen-Bradley
    • Model: 1746-IB16

    New Open Box Name: Slc-500 16-input Module | Arrival date: 08-28-2025 | Dimensions l x w x h (inches): 11 x 9 x 7 | Electrical: 50/60Hz, 24VDC | Weight (lb.): 1 | Available quantity: 3

    $100 USD
    Euclid, OH
  • Trusted Seller
    Allen Bradley Compactlogix Ac Digital

    Allen Bradley Compactlogix Ac Digital 16 Point Input Module

    • Manufacturer: Allen-Bradley
    • Model: 1769

    New Open Box Name: Compactlogix Ac Digital 16 Point Input Module | Arrival date: 08-08-2025 | Dimensions l x w x h (inches): 7 x 7 x 7 | Weight (lb.): 6 | Available quantity: 1

    $130 USD
    Euclid, OH
  • Trusted Seller
    Allen-bradley Compact I/o High Speed

    Allen-bradley Compact I/o High Speed Counter Module

    • Manufacturer: Allen-Bradley
    • Model: 1769

    New, Open Box. Name: Compact I/o High Speed Counter Module | Arrival date: 07-15-2025 | Dimensions l x w x h (inches): 7 x 7 x 5 | Weight (lb.): 6 | Available quantity: 1

    $297 USD
    Euclid, OH
  • Trusted Seller
    Siemens Scalance W748-1 M12 Type

    Siemens Scalance W748-1 M12 Type Client Module

    • Manufacturer: Siemens
    • Model: 6GK

    New, Open Box, Quantity 1 Name: Scalance W748-1 M12 Type Client Module | Arrival date: 06-16-2025 | Dimensions l x w x h (inches): 9 x 9 x 9 | Weight (lb.): 10 | Available quantity: 4

    $260 USD
    Euclid, OH
  • Trusted Seller
    Siemens Simatic S7-300 Analog Input

    Siemens Simatic S7-300 Analog Input Sm331 Module

    • Manufacturer: Siemens
    • Model: 6ES

    New Open Box Name: Simatic S7-300 Analog Input Sm331 Module | Arrival date: 08-14-2025 | Dimensions l x w x h (inches): 7 x 7 x 5 | Weight (lb.): 1 | Available quantity: 1

    $300 USD
    Euclid, OH
  • Trusted Seller
    Harvest HARS480/140 Power Module

    Harvest HARS480/140 Power Module

    • Manufacturer: Harvest

    “New without Factory Packaging” Model number: HARS480/140 | Mpn: HARS480/140 | Shipping weight: 87 lbs | Shipping dimensions: 29 x 19.5 x 12.5 in | Reference sku: 1695507

    $5,214 USD
    Delta, OH
  • Trusted Seller
    Allen-bradley Controllogix High Speed Counter

    Allen-bradley Controllogix High Speed Counter Module. Factory Sealed

    • Manufacturer: Allen-Bradley
    • Model: 1756

    New, Factory Sealed, Quantity 1 Name: Controllogix High Speed Counter Module. Factory Sealed | Arrival date: 04-22-2025 | Dimensions l x w x h (inches): 11 x 9 x 7 | Weight (lb.): 6 | Available quantity: 1

    $170 USD
    Euclid, OH
  • Trusted Seller
    Allen-bradley Controllogix 17-slot Chassis With

    Allen-bradley Controllogix 17-slot Chassis With Psu And I/o Modules

    • Manufacturer: Allen-Bradley
    • Model: 1756

    Used, Untested. (3x)1756-ib16, (2x)1756-ob16e Name: Controllogix 17-slot Chassis With Psu And I/o Modules | Arrival date: 08-28-2025 | Dimensions l x w x h (inches): 31 x 11 x 11 | Weight (lb.): 11 | Available qu...

    $350 USD
    Euclid, OH
  • Trusted Seller
    Allen Bradley Ethernet/ip Safety Compact

    Allen Bradley Ethernet/ip Safety Compact Block Input Module

    • Manufacturer: Allen-Bradley
    • Model: 1791

    New Factory Sealed Name: Ethernet/ip Safety Compact Block Input Module | Arrival date: 07-28-2025 | Dimensions l x w x h (inches): 11 x 9 x 7 | Capacity: 16 INPUTS | Weight (lb.): 6 | Available quantity: 6

    $339 USD
    Euclid, OH
  • Trusted Seller
    Abb PFSK 152 3BSE018877R1 Stressometer

    Abb PFSK 152 3BSE018877R1 Stressometer Module

    • Manufacturer: ABB
    • Model: 3BSE

    “Used” Model number: PFSK 152 3BSE018877R1 | Model line: STRESSOMETER | Mpn: PFSK 152 3BSE018877R1 | Shipping weight: 3 lbs | Shipping dimensions: 16 x 11.5 x 4 in | Reference sku: 1047907

    $8,048 USD
    Delta, OH
  • Trusted Seller
    Allen Bradley 1746-IV32 Ser D

    Allen Bradley 1746-IV32 Ser D Input Module

    • Manufacturer: Allen-Bradley
    • Model: 1746-IV32

    Came from working system, 30 day warranty, Wr5 Bin5

    $19 USD
    Muskegon, MI
  • Trusted Seller
    Harvest HARS480/140 II Power Module

    Harvest HARS480/140 II Power Module

    • Manufacturer: Harvest

    “New without Factory Packaging” Model number: HARS480/140 II | Mpn: HARS480/140 II | Shipping weight: 87 lbs | Shipping dimensions: 25 x 19.5 x 12.5 in | Reference sku: 1695505

    $5,214 USD
    Delta, OH
  • Trusted Seller
    Allen-bradley Compact I/o 4 Channel

    Allen-bradley Compact I/o 4 Channel Isolated Current Output Module

    • Manufacturer: Allen-Bradley
    • Model: 1769

    New, Factory Sealed Name: Compact I/o 4 Channel Isolated Current Output Module | Arrival date: 09-30-2025 | Dimensions l x w x h (inches): 9 x 9 x 9 | Weight (lb.): 1 | Available quantity: 1

    $500 USD
    Euclid, OH
  • Trusted Seller
    Allen Bradley 1771-WS B Weigh

    Allen Bradley 1771-WS B Weigh Scale Module

    • Manufacturer: Allen-Bradley
    • Model: 1771-WS-B

    Came from working unit 30 day warranty WrG Mpn: 1771-WS | Type: Weigh Scale Module | Country/region of manufacture: United States | Controller platform: PLC-5

    $270 USD
    Allendale, MI
34567

Overview

Programmable Logic Controllers (PLCs) are essential components in industrial automation, used for controlling machinery and processes in manufacturing, production lines, and other automated systems. They are designed to handle multiple inputs and outputs, offering reliable, flexible, and scalable solutions for complex control tasks. PLCs are known for their robustness and ability to operate in harsh industrial environments.

FAQ

What factors should I consider when purchasing a PLC?

Consider the number of input/output points required, the processing speed, memory capacity, compatibility with existing systems, and the specific application needs. Also, check for the availability of technical support and software updates.

How can I ensure safe shipping of a PLC?

Use a reputable shipping service that specializes in delicate electronic equipment. Ensure the PLC is packaged securely with ample padding to protect against shocks and vibrations during transit.

What are the maintenance requirements for a PLC?

Regularly inspect the PLC for dust and debris, ensure proper ventilation, and check connections for any signs of wear or corrosion. Follow the manufacturer's guidelines for firmware updates and system diagnostics to ensure optimal performance.