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Festo PDAD Series, Application Note

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Application note 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

Energy management function at 
adsorption dryer PDAD 

Application note for use of the energy management function at 
adsorption dryer PDAD. Explanation, use and layout of purge air 
regulation for reducing air consumption.  
 

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Summary of Contents for PDAD Series

Page 1: ...e Energy management function at adsorption dryer PDAD Application note for use of the energy management function at adsorption dryer PDAD Explanation use and layout of purge air regulation for reducin...

Page 2: ...used for the implementation of safety relevant functions for the protection of personnel and machinery No liability is accepted for claims for damages arising from failure or malfunctioning Otherwise...

Page 3: ...easonably foreseeable misuse 7 2 4 Environment used in 7 2 5 User groups 7 2 Layout of purge air regulation for reducing air consumption 8 3 1 Nature of the task 8 2 2 Use of a manual switch for purge...

Page 4: ...onents 1 2 Documentation This application note is intended to supplement existing documents to include the energy management function Catalogue documentation https www festo com cat en gb_gb data doc_...

Page 5: ...at the interface matter between two phases Adsorption dryers draw the moisture out of the compressed air through the use of a drying agent While adsorption takes place in the first container regenera...

Page 6: ...g instructions The software is neither provided by Festo nor is it available because the device can be damaged in the event of incorrect settings The PDAD is also equipped with an alarm connection whi...

Page 7: ...idges may never be entirely saturated In any case checking must be conducted for continuously flawless functioning because the dryer might otherwise fail or errors might occur within the process or th...

Page 8: ...sure drop although no air consumption is required for the application Compressor start up results in noise in some cases disagreeably at night The temperature in the room might also rise so that appli...

Page 9: ...y important to understand that the purge function can only be shut down at times when little or no air is required If this function is shut down at any other time the drying agent cartridges may be pe...

Page 10: ...portant to understand that the purge function can only be shut down at times when little or no air is required If this function is shut down at any other time the drying agent cartridges may be perman...

Page 11: ...wn until the pressure switch is once again released in this example at an overpressure of 6 2 bar or 90 psi The point at which the switch is released can be adjusted in accordance with the system If i...

Page 12: ...yer PDAD 1 10 Page 12 of 17 Figure 4 Use of a simple pressure switch for purge regulation Dryer regulator Pin 1 reads out 5 V DC signal Pressure switch installed in the field Signal output Return sign...

Page 13: ...s example at an overpressure of 6 2 bar or 90 psi The point at which the switch is released can be adjusted in accordance with the system It s very important to understand that the purge function can...

Page 14: ...tting i e purge air is also active at times when little or no purge air is required There s a plug inserted into the socket for the energy management function EM to this end with pre set jumper see fi...

Page 15: ...lay contact is opened purge air is deactivated The dryer should be removed from service before conversion or integration In order to remove the device from service disconnect it from supply power and...

Page 16: ...lay a new cable may not have a wire cross section of any greater than 1 5 sq mm recommended in order to freely fit into the DIN plug insert should have an outside diameter of no more than 6 mm Larger...

Page 17: ...ections and testing before commissioning All cables must be secured in an appropriate manner The device must be removed from service before conducting any maintenance or repair work Operators and othe...

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