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Products  |  Process Engineering  |  Components and Calibration  |  RT 380
RT 380 Optimization of Control Loops Show data sheet (pdf file) Print page
Technical Description

  This experimental unit with the interaction between controller and controlled system, the objective being for the closed control loop, comprising the controller and the controlled system, to exhibit the desired optimum response. The setting of controller parameters - a key practical aspect - can be practised safely and intensively using simulation software. Concepts such as open and closed loop control, stability, step response, disturbance and control response are clearly demonstrated.


  The particular feature of this experimental unit is that no real controlled systems are used; the controlled system is simulated on a PC by a simulation program developed by GUNT. This principle is in widespread application in product development in industry and is known as Hardware in Loop (HIL). All major types of controlled systems can be selected in the program. The controlled system parameters can be set within broad limits so that - unlike actual controlled systems - extreme parameter situations can be investigated. The time response can be recorded and analysed using the software. The controller and the PC are connected by a data acquisition card with AD and DA converters.

  The controller that is used can be easily configured from the PC across an interface using the software provided.


  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives / Experiments

- learning basic terminology and methods involved

  in process control
  * control loop comprising controller and controlled

  * difference between open and closed loop control

- adapting the controller to different controlled

  * determining the controlled system parameters
  * choosing optimum controller parameters
  * using commonly applied tuning rules
  * investigating control and disturbance response
  * investigating the stability of the closed control loop


* Closed-loop control system response1

* Choice of optimum controller parameters1
* Tuning rules such as Ziegler-Nichols1
* Stability; steady state and transient response1
* Software simulation of controlled systems

Alternative products
IA 130 -- PLC Module
RT 010 -- Training System: Level Control, HSI
RT 350 -- Operation of Industrial Controllers
RT 360 -- Networking of Industrial Controllers
RT 370 -- Setup of Field Bus Systems
RT 350 - RT 380 Trainers for Process Automation

[1] experimental unit for controller tuning
[2] digital controller, configurable as a P, PI or PID controller with interface
[3] interface for PC
[4] data acquisition card for PC
[5] GUNT simulation software for different controlled system types, such as first and second order lags, time-delayed systems etc.
[6] recording and evaluation of time response on PC
[7] configuration software for process controller

Technical Data

- configurable as P, PI or PID controller
- proportional gain Xp: 0...999,9%
- integral action time Tn: 0...3600s

- derivative time Tv: 0...1200s
Process variables as analogue signals: 0...10V
Controlled system simulation models with proportional, integral, first-order lag, second-order lag

Time-delayed response, non-linearity and limitation possible

System requirements: Windows XP or Windows Vista


Dimensions and Weight
LxWxH: 370x330x150mm
Weight: approx. 5kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 experimental unit
1 data acquisition card
1 software CD with GUNT simulation software for

   controlled system models and configuration

   software for the controller
1 set of cables to connect the practice unit to the PC
1 set of instructional material

Order Details
080.38000  RT 380  Optimization of Control Loops
© 2005 G.U.N.T. Gerätebau GmbH