Pressure control First order and second order pressure controlled system based on standard industrial components, smart pressure sensors, system control via PLC Features - digital control of the pressure 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 pressure control system - investigate the properties of open and closed loops - control response in -- 1st order controlled system -- 2nd order 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 pressure sensors with IO-Link interface as measuring element, electropneumatic control valve with positioner as actuator - 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] pressure control process with standard industrial components and smart sensors [2] digital control via PLC, controller can be parametrised as P, PI or PID controller [3] controlled system: 2 pressure vessels with safety valve and manometer for direct observation of the vessel pressures [4] investigation of a first order (1 vessel) or second order (2 vessels connected in series) controlled system [5] measuring element: smart pressure sensors with IO-Link interface for interference-free transfer of measured values and exchange of configuration data [6] smart pressure sensors configured via PLC [7] actuator: electropneumatic control valve with positioner [8] generate disturbance variables via motorised valves, operation via PLC [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 2 pressure vessels - volume: 10L each - max. pressure: 10bar PLC - type: Siemens SIMATIC S7-1200 - modules: compact CPU (8 DI, 6 DO, 2 AI), signal board (1 AO), analogue I/O module (4 AI, 2 AO), IO-Link master 2 smart pressure sensors - measuring principle: ceramic-capacitive - communications interface: IO-Link Pneumatically operated control valve DN 15 - Kvs value: 0,25 - nominal stroke: 15mm Measuring ranges - pressure: 4x 0...10bar - opening degree: 3x 0...100% 230V, 50Hz, 1 phase; 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase; UL/CSA optional LxWxH: 2030x790x1987mm Weight: approx. 203kg