Blog6 - EN

FFU Service - Fraunhofer Gesellschaft

With its various institutes Fraunhofer Gesellschaft belongs to the greatest Cleanroom Operators in Germany.

Yesterday a production shutdown was planned in a job-side in northern Germany, used by different companies to perform their annual maintenance. So the FFU System, delivered with EC-fans from Nicotra||Gebhardt and commissioned by vbk technology in 2013 was checked was well.

2018-11-07

Author:
Mathias Paul

Category:
General

Date:
2018-11-08

Uniquom - worldwide

From now on one of the greatest manufacturers of capacitor foil controls his ebmpapst EC-fans with Modbus- and ebmBUS- Interface by an uniquom handheld.

Uniquom map

Because of the Slovakian branch ordered directly we are glad about the 23rd country-link in our interactive customer map.

2018-09-24

Author:
Mathias Paul

Category:
General

Date:
2018-09-24

Compressor Racks for Blast Freezers

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.

  • Compressor Racks Dashboard
  • Compressor Racks settings
  • Compressor Racks cold brine
  • Kaskaden-Verbundanlage R723
  • Compressor Racks Blast Freezer
  • Compressor Racks Warm sole

In total the plant consists of:

  • - 4 R723 compressors, one controlled by Variable Frequency Drive (VFD) the other 3 compressors in a 2-step-control mode
  • - 3 CO2 compressors for a blast freezer, one VFD-controlled
  • - 1 compressor for frozen storage, VFD-controlled
  • - defrosting, blast freezers and frozen storages with warm brine
  • - 3 integrated rack controllers for demand oriented supply of the refrigerating capacity
  • - demand oriented control of a R723 condenser
  • - heat recovery for warm brine generation
  • - controlled warm brine flow to reduce the thermal stress of the evaporator while defrosting
  • - cold brine charge cycle with pump redundancy to compensate for different operation hours

2018-08-27

Author:
Daniel Hübscher

Category:
PLC / automation

Date:
2018-08-27

Service uniqunet – FFUs in Cleanroomapplication

„Troubleshooting - Commissioning - Training“ were written at the P.O. of a big plant engineering company. They pleased us for support for commissioning a FFU-network with fans from ebmpapst with Modbus Interface at site and to train the operating staff afterwards.

After an address-conflict was eliminated in the FFU-network and no other abnormalities were found we did the programming of the uniqunet FFU-control device together with the end user. Now 3 FFU groups will be controlled according to the manufacturing process with different set-values in day/night mode.

Service Cleanroomapplication

Service uniqunet – FFUs in Cleanroomapplication

2018-07-31

Author:
Mathias Paul

Category:
General

Date:
2018-07-31

Test Set-up for uniqunet PCBs

A new test device allows the automatic test of the uniqunet PCBs before commissioning.

  • In detail, the following steps will be performed automatically, after the 24V (=) power supply is applied:
  • - Test of all created voltages at the PCB,
  • - Functionality test of all digital In- and Outputs and adjustment of the analogue inputs.
  • test device uniqunet software
  • test device uniqunet hardware

The testing device is linked to an HTML-Web-surface at a PC from where it is controlled. An Arduino Microcontroller is working on the test board and makes the data processing for the PC-software. After the tests have been successfully a PDF is created and stored automatically.

2018-06-28

Author:
Stefan Reinhold

Category:
General

Date:
2018-06-28

Replace a defective Siemens PLC of a swimming hall Automation

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.

  • Schwimmbadsteuerung SPS
  • Schwimmbadsteuerung Schaltschrank
  • Schwimmbadsteuerung Panel
  • - Transmission of the old step 7 program to the new PLC
  • - Programming of the visualization in TIA Portal
  • - link of Step7 project to visualization with TIA Portal
  • - Reconstruction of all PLC components and the new panel to the existing switchboard

2018-05-29

Author:
Daniel Hübscher

Category:
PLC / automation

Date:
2018-05-29

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