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RT 800: PLC Application: Mixing Process

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PLC Application: Mixing Process

PLC Application: Mixing Process PLC Application: Mixing Process PLC Application: Mixing Process

Product Details

Technical Description 
This process model for PLC applications can be used to create complex PLC control functions from the field of process control, particularly for processes involving metering and mixing. The system consists of the base frame with a storage tank, a centrifugal pump and a demonstration panel on which all components are clearly laid out. A pump delivers water to three tanks, controlled via solenoid valves. The level of water in the three tanks is monitored by capacitive proximity switches with adjustable sensitivity. The fluid from the three tanks can be mixed together in the downstream mixing tank. The mixing tank is also equipped with three proximity switches. An agitator assists the mixing process. All the tanks are transparent, so the conveying and mixing processes are clearly observable.
The model features a lab jack panel by which the signals from the capacitive proximity switches can be processed by PLC, and all the solenoid valves can be individually controlled. PLC systems from different manufacturers can be used. A top-hat (DIN) rail on the model's front panel is provided so as to allow for connection of the PLC. Although a PLC is not included in the package, the operation of the system can be checked without one. We recommend the use of PLC module IA 130.
The well-structured instructional material details the technologies involved and provides a step-by-step guide through the exercises.

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
- Procedure for connecting up the PLC
- Performance of complex PLC control
  functions using a complex example from the field of
  process control
- Discontinuous metering and mixing

* Trainer for control of discontinuous mixing
  processes by PLC1
* Use of standard industrial components1
* Capacitive level switches1
* Built-in power supply unit to power all the
  components and the PLC


[1] Clearly laid out test system 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 tanks, each with 2 capacitive proximity switches
[4] Metering from the 3 supply tanks into the mixing tank via solenoid valves
[5] Mixing assisted by agitator 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 tank
[10] Sturdy tubular steel trolley
[11] Power supply to all components and to PLC by built-in power supply unit
Technical Data
- power consumption: 0.55kW
- max. flow rate: 230L/min
- max. head: 11m
- tank capacity: 70L
- 3 tanks, capacity: 1.5L each
- mixing tank capacity: 7L
Capacitive proximity switches, NO contacts
2/2-way solenoid valves DN 8 and DN 20
Power supply unit: 24VDC, 8A

Dimensions and Weight
l x w x h : 1380 x 610 x 1850 mm
Weight : approx. 145 kg

230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase or 120V, CSA, 1 phase

Scope of Delivery
1 process model, complete
1 set of instructional material

Order Details
080.80000  RT 800  PLC Application:
                      Mixing Process

Available accessories

IA 130 -- PLC Module
Alternative products
IA 210 -- PLC Application: Materials Handling Process
IA 520 -- Computer Integrated Manufacturing and Handling System

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
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