RT 800 PLC Application: Mixing Process Didactic Equipment Vocational Education Equipment Process Control Trainer
Experiments using PLC to control discontinuous mixing processes Features - trainer for control of discontinuous mixing processes by PLC - use of standard industrial components - capacitive proximity switches as level sensors - built-in power supply unit to power all the components and the PLC Learning objectives/experiments - planning and implementation of a PLC controlled mixing process - familiarisation with terms and symbols - presentation of circuits - functionality test of all sensors and actuators - sensitivity adjustment of the capacitive proximity switches - procedure for connecting up the PLC - together with PLC module: performance of complex PLC control functions using a complex example from the field of process engineering - discontinuous metering and mixing Specification [1] clearly laid out trainer as basis for the use of a PLC in a process control application involving mixing processes [2] transparent mixing tank with 3 capacitive proximity switches to monitor the level [3] 3 transparent measuring tanks, each with 2 capacitive proximity switches [4] metering from the 3 measuring tanks into the mixing tank via solenoid valves [5] mixing assisted by stirring machine in mixing tank [6] proximity switch signals processed by PLC via lab jack panel [7] control of the 8 solenoid valves, the pump and the agitator also by PLC via lab jack panel [8] capacitive proximity switches with adjustable sensitivity [9] closed water circuit with centrifugal pump and stainless steel storage tank [10] power supply to all components and to PLC by built-in power supply unit Technical data Centrifugal pump (submersible pump) - power consumption: 430W - max. flow rate: 150L/min - max. head: 7m Tanks - storage tank: 70L - 3 measuring tanks: each 1500mL - mixing tank: 7L Capacitive proximity switches, NO contacts 2/2-way solenoid valves 6x DN8, 1x DN20, 1x DN15 Power supply unit: 24VDC, 8A 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1618x792x1903mm Weight: approx. 223kg
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