Related Manuals for Siemens LOGO! 0BA7
Summary of Contents for Siemens LOGO! 0BA7
- Page 1 Application Description 02/2014 PI Controller for Simple Applications – Optimum Motor Speed Control Simulated Application with S7-1200 for LOGO! and SINAMICS V20 Set 23 http://support.automation.siemens.com/WW/view/en/23753479...
- Page 2 Siemens recommends strongly that you regularly check for product updates. For the secure operation of Siemens products and solutions, it is necessary to take suitable preventive action (e.g. cell protection concept) and integrate each component into a holistic, state-of-the-art industrial security concept. Third-party products that may be in use should also be considered.
- Page 3 Table of Contents Table of Contents Warranty and Liability ....................2 Task ........................4 Overview....................4 Requirements for the automation task ..........4 Solution....................... 5 Overview....................5 Automation solution – Set 23 ............... 5 Description of the core functionality ............. 6 Hardware and software components ...........
- Page 4 1 Task Task Overview Introduction The features in the application will be explained with the example of an automation task so that they can be understood more easily. In an injection molding plant, the molded parts are cooled down to a certain final temperature by a water cooling system.
- Page 5 2 Solution Solution Overview Schematic layout The following figure gives a schematic overview of the most important components of the solution: Figure 2-1 LOGO! TD LOGO! Power LOGO! logic module LOGO! AM2 AQ SINAMICS V20 Asynchronous motor SIRIUS monitoring relay Sensor for level monitoring SITRANS P pressure transducer Automation solution –...
- Page 6 2 Solution Advantages The solution presented here offers you the following advantages: Cost-effective and stepless speed control Simple combination of drive tasks with sensor and control functions by combining a SINAMICS V20 with a LOGO! Protection and supervision function of the motor via SINAMICS V20 Excellent energy efficiency by a motor output adapted to the consumption Direct display of messages and device states on the integrated display of the LOGO!
- Page 7 2 Solution Hardware and software components 2.3.1 Validity This application is valid for: LOGO! 0BA7 SINAMICS V20 2.3.2 Components used Note The cooling water system is designed for a 0.12 kW motor with a SINAMICS V20 frequency converter. Hardware components...
- Page 8 2 Solution Configuration software/tools Table 2-3 Component Article number Note LOGO!Soft Comfort V7 6ED1058-0BA02-0YA1 Sample files and projects The following list includes all files and projects that are used in this example. Table 2-4 Component Note LOGO!Soft Comfort V7 – Program The zip-file contains: 23753479_Set23_RegReal_V23.lsc 23753479_Set23_RegReal_V23.zip...
- Page 9 3 Operation Operation General overview Figure 3-1 consumers 1,2 & 3 n setp P setpoint distance sensor P actual Capturing pressure as a measured variable and providing it as an analog value Table 3-1 Function Comments The measured variable in the cooling water cycle is the pressure. A pressure measuring transducer is used for measuring this variable.
- Page 10 3 Operation Function Comments Via the integrated analog input at the LOGO! measuring logic module, the measuring voltage (0 to 10V) signal of the pressure measuring transducer is continuously read off. 0.68V = 0.17bar The current pressure can be calculated by means of the scaling of the pressure measuring range 0 to 25bar and the voltage range 0 to 10V.
- Page 11 3 Operation Function Comments The difference is caused by the variable consumers 2 and 3 active load (consumer flow ) of the consumers 1, 2 and 3. - 8.0m³/h When consumers are connected, the 9.0m³/h consumer flow is increased, and the distance sensor pressure...
- Page 12 3 Operation Monitor storage tanks and react to dry run Table 3-4 Function Comments To avoid the pump running dry in this cooling water system, a three-pole wire electrode is used for monitoring the water level in the storage tank. For an electrode, the reference point (M), the minimum fill level (Min) and the maximum fill level (Max) are set,...
- Page 13 4 Installation Installation This chapter shows the necessary steps to put the example into operation with the code from the download and the hardware list. Note The installation guidelines for LOGO! and SINAMICS V20 always have to be observed. Before installing the SINAMICS V20 and putting it into operation, please read all the safety instructions and warnings in its operation instructions and observe the warning signs in the device.
- Page 14 4 Installation The SIRIUS monitoring relay (4) is connected to a digital input of the LOGO! logic module. A three-pole wire electrode (8) is connected to the SIRIUS monitoring relay. Installing and wiring the hardware Table 4-1 Action Comments Install the components no. 1, 2, 3 and 6 from Table 2-1 and no.
- Page 15 4 Installation Software installation (download) This chapter describes the steps for the installation of the example code. Note The software examples are available on the HTML page from which you downloaded this document. The software examples are always assigned to the components used in the set and show their basic interaction.
- Page 16 4 Installation Action Comments Set the IP address at the LOGO!: See also LOGO! Manual \3\ If necessary, navigate to the menu item “Date/Time” with the LOGO! button Use the button sequence ESC and to navigate to “Stop”. Stop the program editing with the button sequence OK , , and OK .
- Page 17 5 Configuration and Settings Configuration and Settings Scaling analog values into physical values in the LOGO! Table 5-1 Function Comments Coming and going analog values can be optionally scaled by means of the analog blocks so that the user can have real physical values (such as pressure, temperature, revs/min) displayed in the LOGO! program.
- Page 18 5 Configuration and Settings Using 16 characters per line in the LOGO! Display LOGO!Soft Comfort 7 offers the possibility of using several character sets for the message display. By default, 12 characters per line are used in the display, with the following parameter setting: “Message Text Setting”: “...
- Page 19 5 Configuration and Settings Configuring the SINAMICS V20 Note The cooling water system has been designed for a 0.12kW motor and a SINAMICS V20 frequency converter, and a supply voltage with a mains frequency of 50Hz. If another motor or another frequency converter is to be used, or of the supply voltage has a different mains frequency than 50Hz, the drive parameters must be adjusted differently from Table 5-5.
- Page 20 5 Configuration and Settings Action Operation/display Value Set the motor voltage to 230V. P0304 Set the motor nominal current to 0.73A. 0.73 P0305 Set the motor nominal power to 0.12kW. 0.12 P0307 0,750 Set the factor motor nominal power to 0.75 cos . P0308 Set the motor nominal frequency to 50Hz.
- Page 21 6 Operating the Application Operating the Application The functionality of the LOGO! Set 23 were “packed” in an application example of a cooling water system for an injection molding plant. The functionalities and features of the program code and the hardware, can be testes as follows, if the components have been configured correctly as described in section 5.3.
- Page 22 6 Operating the Application Scenario 1: Testing the wire electrode for level monitoring In the present cooling water system a pump is blocked as soon as a low fill level in the tank is detected. To check for a sufficient fill level of the tank or a dry run, the following steps have to be carried out: Table 6-2 Action...
- Page 23 6 Operating the Application Scenario 2: Changing the language and switching the backlight on/off via LOGO! TD With the function keys of the LOGO! TD the language can be switched from English to German and vice versa. The backlight of the LOGO! TD and of the integrated display of the LOGO! logic module can be switched on and off.
- Page 24 6 Operating the Application Table 6-4 Action Comments In the default message text of the LOGO! TD, the setpoint pressure, the actual pressure of the cooling water system and setpoint speed of the motor are output. The values are given as the physical variables “bar”...
- Page 25 LOGO! TD?” provides a better understanding of changing the setpoint via function keys “ http://support.automation.siemens.com/WW/view/en/34914500 Scenario 5: Display values by means of LOGO! Display By means of the display integrated in the LOGO! logic module, the process values are displayed as bars.
- Page 26 6 Operating the Application Scenario 6: Observe the course of the controlling by means of LOGO!SoftComfort LOGO!Soft Comfort V7.1 offers the possibility of displaying the course of the controlling of the PI controller in a curve and to observe it live Table 6-7 Action Comments...
- Page 27 6 Operating the Application Scenario 7: Change control parameters If you want to optimize the controlling process, the following parameters can be adjusted: P-component of the PI controller (default: 2) I-component of the PI controller (default: 1s) Ramp-up/ramp-down time of the motor (speed: 3s) Table 6-8 Action Comments...
- Page 28 V2.1, V2.2 04/2009 Layout changes and adaptation of the application to LOGO! 0BA6 V2.3.R 02/2014 Layout changes, addition of security advice and adaptation of the application to Controlling with LOGO! 0BA7 and SINAMICS V20 Set23_RegReal Entry ID: 23753479, V2.3.R, 02/2014...