Temperature control Temperature controlled system based on standard industrial components, controller configurable as a continuous or a switching device, smart temperature sensors, system control via PLC Features - digital control of the temperature via PLC - integrated touch screen or PC with GUNT software as HMI - network capable GUNT software with data acquisition for remote learning - use of smart sensors, configuration via PLC: change, save and transfer parameters during operation Learning objectives/experiments - design and function of a temperature control - investigate the properties of open and closed loops - control response in -- continuous control -- two-point control -- three-point control -- dead times - investigate the influence of the temperature sensor position on the properties of the controlled system - investigate disturbance and reference variable response - manipulating variable limitation and effect on the control system - fault finding (fault simulation via PLC) - familiarisation with industrial control engineering components: Siemens PLC as digital controller, smart temperature sensor with IO-Link interface as measuring element, heater and cooling unit as actuators - familiarisation with IO-Link as communications interface for smart sensors -- standardised, open technology -- interference-free transfer of measured values -- exchange of configuration data -- system design (IO-Link device, IO-Link master, PLC) Specification [1] temperature control process with standard industrial components and smart sensors [2] digital control via PLC, controller can be parametrised as P, PI or PID controller as well as switching with hysteresis [3] controlled system: pipe section with 2 process delay pipe sections of different lengths [4] actuator: screw-in heater with temperature limiter as dry-running protection and air/water heat exchanger with fan as cooling unit [5] measuring element: 3 smart temperature sensors with IO-Link interface for interference-free transfer of measured values and exchange of configuration data [6] smart temperature sensor configured via PLC [7] generate disturbance variables via proportional valve with motor drive, operation via PLC [8] closed water circuit [9] remote learning: follow and analyse experiments at any number of workstations with LAN/WLAN connection via network capable GUNT software [10] GUNT software for data acquisition via LAN under Windows 10 [11] multimedia instructional materials online in GUNT Media Center Technical data Process delay pipe sections - straight pipe, length: 0,7m, Ø inner: 20mm - pipe spiral, length: 16,5m, Ø inner: 10mm PLC - type: Siemens SIMATIC S7-1200 - modules: compact CPU (8 DI, 6 DO, 2 AI), analogue I/O module (4 AI, 2 AO), IO-Link master 3 smart temperature sensors - measuring element: Pt1000 - communications interface: IO-Link Screw-in heater: 2kW Fan - power: 31W - max. flow rate: 545m3/h Pump - max. flow rate: 5,0m3/h, max. head: 6m Measuring ranges - temperature: 3x -10...150°C - opening degree: 0...100% 230V, 50Hz, 1 phase; 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase; UL/CSA optional LxWxH: 2030x790x1987mm Weight: approx. 204kg