Multi-loop Temp & Process Controllers

Multi-loop temperature controllers manage several zones simultaneously to stabilize the temperature of environments such as ovens, packaging, and heat treatment. Generally, behind panel, multi- loop controllers support various fieldbus options allowing for easy integration with other devices within the machine or a wider plant network. Multi – loop systems can be programmed to allow the zones to be independent or to work in conjunction with one another, depending on the needs of the application. Benefits of the multi – loop temperature controller includes reduced installation costs, improved integration and minimal machine downtime.

Multi Loop controllers are generally mounted behind the panel, as opposed to single loop controllers which are often front panel mounted. A proprietary software for PC’s is most often used to program and download settings to the multi-loop temperature controller.

West Control Solutions offers a range of controllers from its leading product brands, CAL, Partlow, PMA and West. These meet a variety of differing control loop requirements as well as providing different degrees of functionality.

The chart below presents a selection of our most popular multi loop temperature and process controllers.

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Single Loop Controllers

Multi Loop Controllers


Limit Controllers


Max No. of Outputs Max. No. of Loops PID Control Profiling Alarm Logic Function Features Certs.

KS 98-2

KS98 2 EN thumbnail

11 Ο Ο Ο Ο
  • Modular automation system in a 1/4-DIN (96 x 96mm) format
  • Graphical programming utility with simulator
  • Expandable with modular inputs and outputs
  • IP65
  • CE
  • cULus
  • DIN EN 14597


Multi Loop Temperature Controller - KS 98-1 Multiloop Controller

9 2 Ο Ο Ο
  • Graphical / text display
  • USB configuration and data access
  • Modbus RS485 or Modbus TCP Ethernet
  • Gain scheduling
  • Datalogger with real time clock


  • CE
  • cULus


KS Vario

KS vario Multiloop Controller

Up to 8 per system 30 per system Ο Ο Ο Ο
  • Compact and modular design
  • Open for all major industrial field buses
  • Between 4-30 temperature zones can be controlled

KS 800


19 digital,
8 analogue

8 per system

  • 8-channel controller in housing for rail mounting
  • Connection for "Blue Control" engineering software
  • Monitoring for heating current and complete control loop
  • cULus

KS 816


0 16 per system Ο Ο
  • 16-channel-controller/transmitter in housing for rail mounting
  • Connection for "Blue Control" engineering software
  • 16 individually configurable universal inputs
  • cULus

MLC 9000+

MLC 9000+ Multi Loop Controller

48 per system

32 per system

  • Quicker to setpoint
  • Fast reaction to process disturbances
  • On-demand and auto-tuning
  • Only buy loops required
  • IP20
  • UL
  • CE

KS 98-1

KS 98-1 Multiloop Controller

11 Ο Ο Ο Ο
  • 1/4 DIN size with front interface,
  • Built-in analog and digital I/O
  • I/O extension via CANopen or integrated plug-in modules
  • IP65
  • CE
  • cULus
  • DIN EN 14597