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First manufactured in 1986, the SK1800 was also a trailblazer in the world of programmable logic controllers (PLCs) Offering both Solid State and Relay configurations, the SK1800 was one of the fastest controllers on the market, offering a scan rate of 1.8 ms/K of ladder code and a fast scan version of 0.7 ms/K of ladder code. Its model name was Road Runner. This was Entertron's first unit to include high speed counters, quadrature decoder, dip switch and retentative memory. ESI is your source for replacement units.

Features Included:
  • AC or DC Power
  • 24 Digital Inputs expandible to 48 (AC, DC or custom voltage)
  • 20 Solid State or Relay Digital Outputs expandible to 40 (AC, DC or custom voltage)
  • Individually fused outputs with built in noise protection for solid state version
  • Options included: High Speed Counters, Quadrature Decoder, Retentative Memory, Dip Switch
  • Pluggable Terminal Blocks
Part Number Description Unit Price Purchase
18-24D20R SK1800 24 DC inputs / 20 Relay outputs $1,295.00
18-24A20R SK1800 24 AC inputs / 20 Relay outputs $1,395.00
18-24D20D SK1800 24 DC inputs / 20 DC outputs $1,595.00
18-24D20A SK1800 24 DC inputs / 20 AC outputs $1,595.00
18-24A20A SK1800 24 DC inputs / 20 AC outputs $1,695.00
18-48D40R SK1800 48 DC inputs / 40 Relay outputs $1,995.00
18-48A40R SK1800 48 AC inputs / 40 Relay outputs $2,095.00
18-48D40D SK1800 48 DC inputs / 40 DC outputs $2,595.00
18-48D40A SK1800 48 DC inputs / 40 AC outputs $2,595.00
18-48A40A SK1800 48 AC inputs / 40 AC outputs $2,695.00
Contact ESI with serial number to verify installed configuration. Discounts available through ESI Store
Controller Options listed on store
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Contact us with your controller serial number and we will be able to tell you exactly what you have and ultimately provide you with a replacement.

To learn more, or to purchase, Contact ESI

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