Temperature Controllers for Plastics

When Should You Use a Multi-loop Controller?

If you have more than one control loop within a single system then a multi-loop controller can be used. In simplified terms a multi-loop controller can be thought of as having multiple temperature controllers within a single instrument.

Typical Usage and Benefits

Multi-loop controllers are generally mounted behind the panel as opposed to single loop controllers which are often front panel mounted. The controllers are typically programmed using a proprietary software program on a PC which downloads settings to the multi-loop temperature controller using communications.

Using a multi-loop controller rather than multiple single loop controllers can have many benefits. Installation costs can be reduced due to having one common connection point, resulting in less wiring and minimising panel cut outs. Another advantage is controllers can be changed without powering down the system. This process, known as hot-swapping, it significantly reduces machine downtime.

Applications for Multi-loop Controllers

There are a number of industries whose requirements regularly demand a multi-loop controller. Plastics, extrusion and rubber applications generally have sophisticated temperature control processes that require more than one control loop. For these a multi-loop controller is often the preferable solution. 

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


CALogix Multi Loop Controller

12 per system 4 per system Ο Ο Ο Ο
  • DIN rail mount base unit
  • Base-unit for up to 4 control modules
  • Network up to 31 base units
  • RS485 Modbus RTU communications
  • 3 Year warranty
  • UR
  • cUR
  • CE

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
  • 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

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