Around 1900 breweries were often set in the underground a plant of chestnut trees for cooling on top. True or not, this is what came to your author attention while watching a TV-report about Carl von Linde. Today the chestnut groves will be used more often to sit here and enjoy the results of the brewing process, the cooling is business of technique. Last week we had the opportunity to support our partner KälteConcept in doing the whole automation at a refrigeration system.
The core was a S7-1500 used as CPU, as HMI a KTP900 comfort is used. The cooling appliance consists of 2 screw compressors from Bitzer. The cold brine cycle was realised with 2 Magna pumps, controlled in close loop by pressure, while the 2 Grundfoss-pumps of the lubrication cycle were controlled alternating in redundancy for sake of a long operation life. The highlight of the automation is an error log, that saves all relevant pressures and temperature carts of the last 3 minutes BEFORE an error will have occurred.
Category:
PLC / automation
Date:
2023-01-12
More and more people suffer from intolerances to different ingredients of foods. Consequently mainly large bakeries creates special products and therewith a kind of normality for those people. For one of these larger bakeries we commissioned a NH3 cold water chiller together with our partner KälteConcept at the end of last year.
Of course we applied our proven rack controller for climate cascades. The core of the automation is Siemens S7-1500 using TP900 Comfort Panel as HMI controls 2 large centrifugal compressors of 75kW each. The total Refrigeration power is roundabout 420 kW. The most sophisticated item is the permanent archiving of the important operation values in a ring buffer. So in case of an error all process data of the last 30sec before the error occurred are available. In in case of a failure it makes the service work way easier.
Category:
PLC / automation
Date:
2022-01-15
Due to the pending quarantine regulations in China that requires a couple of additional days if not weeks, we decided to go for a remote commissioning of a cooling system together with our partner Kälteconcept using Skype and Teamviewer.
The plant itself, a subcritical CO2 Fluid-cooling-appliance was in central china, used in a wind tunnel of a Chinese Automobile Company, is designed for up to 850 kW cooling power. It consists of 2 parallel compound lines with 3 CO2 compressors each, partially controlled by VFDs.
Practically it was done with Tia-Portal V15 on a S7-1500 CPU with a TP900 Comfort-panel. The special feature is a Pre-Error-Archiv was saves, in case of a fault, all relevant system data for the last 30s BEFORE the error occurred.
Finally it was a total success with only winners. The end user saved some money and was practically forced to an intensive training, we avoided a long commissioning trip with a unpleasant quarantine and finally the environment wins by avoiding flight traffic. A random view at the sky above our house compared to one on feb. 21rd in 2012 speaks for itself.
Category:
PLC / automation
Date:
2021-06-18
Our local water supply company is realising a new waste water handling appliance in a small town. The control of the rake bare is our task inside the complex structure.
Two different operation modes are possible; either the difference of water level in front and rear the rake or the level of waste water in front of the rake is used to control. The drive of the rake is controlled by frequency inverter. The measurement of the filling level is realised by 2 radar sensors.
There is a Beckhoff-PLC used as industrial PC with 12’’ touchscreen. The I/Os are integrated by Ethercat, the link to the FMS is done via OPC-UA. All this is programmed by TWINCat3.
Category:
PLC / automation
Date:
2019-07-25
Right in time for the Christmas Business and ordered by a big bakery supplier the control and the suitable visualisation of the Air Conditioning of a donut production line was passed to customer at the gates of Warsaw.
Realised on an S7-1500 programmed with TIA-portal it guarantees the air conditioning of 2 rooms, which could do both, proofing and resting.
Category:
PLC / automation
Date:
2018-11-27
Together with our Partner KälteConceptwe finished a plant with several compressor racks for blast freezers, spiral cooling conveyors and frozen storages with cold and warm brine generation on a Siemens PLCS7-1500 CPU programmed with TIA-portal.
In total the plant consists of:
Category:
PLC / automation
Date:
2018-08-27
Corrosion and other environmental factors required the replacement of a S7-313 PLC and its OP7 operating interface by a S7-314 with a touch panel KTP 400 Comfort done by our PLC technicians in the following steps.
Category:
PLC / automation
Date:
2018-05-29
The latest PLC project of vbk technology is a batching plant with 2 or 3 components for Polyurethane.
Therefor a new SIEMENS S7-1200 CPU is applied with different LCD Touch panels.
Category:
PLC / automation
Date:
2018-03-16
Right in time for the pre-christmas-seasonKälteConcepthanded over a newHVAC-plantto Bäckerei Schmidt.
As for the costumer interface the process visualizationuniquvisis on duty and delivers all data costumer required in a perfect manner.
Category:
PLC / automation
Date:
2017-12-14
A „Power & Free“ conveyor system of a hand painting equipment for a big manufacturer of windows and doors is the latest highlight of vbk technology automation products. 13 stoppers that need to be free configurable, the control of a traction chain drive as well the automatic suction are made for the operation by a touch panel.
An especially designed functional module allows simple scalability for the present application as well as for upcoming projects. Currently this functional module is used to set minimum dwell time and maximum number of traverses per stopper by the customer.
The program is done on SIEMENS PLC S7-1200 via TIA-Portal V14.
Category:
PLC / automation
Date:
2017-04-06
After completion of the HVAC-plantwith our partner KälteConcept at Schwarzbach Feinkost GmbH end of 2015, we now handed over the access at an IT-level to our very interested client. With the uniquvis systems the heating - ventilation - air conditioning plant is fully visualized.
A MySQL database with more than 20 tables provides all data for the visualization. An HTML5 application, which could be accessed by each modern browser, is used for configuration and operation of the visualization.
Category:
PLC / automation
Date:
2016-02-23
Having realized the main control of a few smaller refrigeration plants bySPS-S7 for our partnerKälteConcept over the year 2015, we are now proud of having been able to contribute to the reopening of the Schwarzbach Feinkost GmbH. With an extraordinary level of heat recovery, we realized an overall concept of heating, ventilation and air conditioning (HVAC) in record time, to allow the owner to deliver their products to their markets.
In addition to switchboard design, SPS-programmingand the commissioning, a special highlight is awaiting our engineers - the visualization of the whole HVAC plant.
Category:
PLC / automation
Date:
2015-11-30