Northwest Process Equipment Inc.


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Electrical & Control Systems

NORPRO provides sales, installations and complete parts and service for a wide variety of electrical control and plant automation equipment. We can provide individual custom control panel systems or complete plant control houses. We also supply a wide range of AC, DC and soft-start motor control equipment to suit most any application. Some of the things we do -




4-Bin AC Variable Frequency Drive Package
  • AC Variable Frequency Drive Packages (VFD’s) - The easy add-on way to precisely control the feed rate from any bin, pump or auger system. Common applications include: asphalt plant belt feeders; aggregate blending bin systems; crushing plant feed conveyors; vibrating grizzly feeders; asphalt or other liquid pumps; and lime or mineral filler vane feeders. Work great for controlling airflow rates from large exhaust fans too - save big on your electrical bills and lower your peak demand factor with the power company. Standard packages available for all sizes of motors.
Control Consoles
  • Plant Control Consoles - Custom built control consoles to fit the exact needs of your operation. New console systems can be manufactured incorporating any of your existing functional controls for large up-front cost savings.
Computerized Blending Systems
  • Computerized Blending Systems for Drum-mix Asphalt Plants - Sophisticated drum-mix plant controls to meet today’s tight mix specs. Our systems feature integrated control of all virgin feed bins, RAP, any number of additives and liquid AC all in one reliable, easy to use, fully integrated computer system. Features include: automatic printouts of plant operating data; no need for any external belt scale integrators; and easy assisted calibration screens for all of the plant feeders and meters.
PC Based Control Systems
  • PC Based Control Systems For Asphalt Batch Plants - Reliable, high-speed batching control in an affordable and easy to use package. Can simultaneously load trucks from the plant and silos at the same time. Daily job and ticket reports can be printed or they can quickly and easily be transferred to the office by modem.
Split-Level Control House
  • Plant Control Houses - Totally first-class portable and stationary plant control houses built to your specific requirements. Available in either split-level(featuring 360º visibility)or single level designs. Turnkey equipped to your requirements with consoles, electrical switchgear, air conditioning and heat systems, power and control quick-connect plug-ins, etc.
Single Level Control House
Custom Built Control Panels
  • Custom Built Control Panels - We custom build control panels and systems for a wide variety of applications. Shown here is a 6 virgin feed bin with RAP control system recently built for an asphalt plant. It has provisions for operating the bins either in manual or auto control mode. In the auto mode, the feeders are controlled by the built-in blending computer system, delivering exacting blending of materials to the plant.
Computerized Batching Systems
  • Computerized Batching Systems For Concrete Plants - For automated control of ready mix, concrete block and precast concrete batching operations. Sophisticated control in an easy-to-use, reliable and affordable package. Accurately controls the entire batch delivery process and prints tickets and reports. Shown to the left of the batching control is a custom built manual control console which we also supplied for this ready mix plant application.
Burner Controls
  • Burner Controls - from NORPRO are safe, reliable and easy to operate. PLC managed system with built-in "plain English" operator display panel. Available as either drop-in panel or desktop consolet. Easy, economical retrofit for any Genco or Hauck burner system.
Motor Control Centers
  • Motor Control Centers (MCC’s) - Complete motor control centers designed and built to your plant’s unique requirements. If you are considering replacing the old electrical switchgear on your plant, an integrated motor control center can offer huge cost savings compared to purchasing individual circuit breakers and motor starters. On-site installation and wiring can be completed in a fraction of the time of mounting and wiring separate units. When needed, the individual motor starter buckets can be quickly and easily pulled out for any needed service repairs. MCC’s also provide the highest degree of worker safety, with positive, fast and easy lockout/tagout of equipment.
DC Drive Packages
  • DC Drive Packages - Still the simple, reliable workhorse of the industry for smaller horsepower applications. Typically used on up to 5 HP variable speed feeder and pump drives. Shown here is a custom built DC drive system for an asphalt plant cold-feed, including 6 variable speed DC drive controllers plus motor starters for 3 other fixed speed conveyors in the delivery system. We also offer repair services for many different brands of DC drives.See our service page.
Soft-Start Drives
  • Soft-Start Drives - Typically used for larger horsepower motors such as exhaust fans, pugmills, dryer drums and crushers. Solid state control allows smooth, transition-less ramp-up to speed. Prevents brownouts of your electrical system, and lowers your peak demand when starting large motors. Standard models available for up to 500 HP - 460V motors. For twin motor drive setups, we also offer one of the few true dual-motor all-in-one soft-start drives. Top-notch quality and very competitively priced.
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