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5.2.13    Level control

 

It can be selected whether the control system will run via the internal 
level  sensor  (dynamic  pressure,  bubbler  system),  an  external  4  - 

20 mA  level  sensor  or  a  float  switch.  The  input  for  the  high  water 
alarm  (

terminal  19  /  20

)  is  always  active  and  can  be  used  as  a 

redundant system. When using external 4 - 20 mA level sensors and 
float switches installed in an explosive area, it will be necessary to use 
components with the requisite certifications. 

5.2.14

    

20 mA => Level 

This setting adapts the switch points and the display of the level to a 
connected external 4 - 20 mA level  sensor. The processor converts 

the input signal  such  that the  correct  level  is  displayed.  When the 
measurement  range  for  the  4  -  20 mA  sensor  is  changed  in  the 
configuration menu, the switch points will have to be re-configured, 
as  they  will  have  changed  determined  by  the  system.    Thus,  the 
correct  order  will  always  be  to  first  configure  the  sensor’s 

measurement range and then the switch points. The corresponding 
regulations must  be  observed  for  the  use in the  EX  zone, i.e.  a  4  - 
20 mA  sensor  with  corresponding  certification  and  a  matching  EX 
barrier. If the switch points are outside the level sensor’s configured 
range, then the message 

“Check switching points”

 will be shown. 

5.2.15    Bar Level max. / Bar Current max. 

In order to allow for a practical resolution of the bar graph display, 
the maximum value of the respective display can be set here. If AUTO 

is selected in the menu item, the maximum value of the respectively 
set level or the max. current will be used automatically.  

5.2.16   

 

Local language 

The scope of delivery includes German / English / French / Italian / 
Spanish / Portuguese / Dutch / Swedish / Norwegian / Danish / Polish 
/  Czech.  The  country  language  can  also  be  changed  when  service 
mode is deactivated. 

5.2.17    Menu items data import and export 

The

 

PS

MEGA 

1

 offers the option of writing and reading 

configuration files:  

5.2.18    FatFS: Filename

 

At this

 

point, the file name is assigned for the configuration and log 

files. The file name 

PS

MEGA 

1

 is preset.  A code page can be opened 

by  pressing  the  select/  acknowledge  button.  A  character  can  be 

selected with the knob and accepted with the select/acknowledge 
button. 

Delete characters

 

Save the file name and exit the menu 

Leave menu without saving the changes 

5.2.19    FatFS: Read 

By pressing the select/acknowledge button, a configuration file with 
the set name is read from the memory card and the settings are taken 

over. If there is no corresponding file on the memory card or if no 
memory  card  is  inserted,  a  corresponding  error  notification  will 
appear in the display. 

5.2.20    FatFS: Write 

By pressing the select/acknowledge button, the current settings are 

written  on  the  memory  card.  The  configuration  file  receives  the 
previously entered name.   If a memory card is not in the holder, a 
corresponding error notification will appear. If a file with the same 
name is already on the card, a prompt will appear asking if the file 
should be overwritten. 

5.2.21    FatFS: Log 

By pressing the select/acknowledge button, a log file is written on 
the memory card with the current operating hours, pump starts and 
errors. The log file can be read with any text editor. 

Memory card size up to 

64 GB! 

Menüpunkt 

Erklärung 

FatFS: Filename 

An input menu can be opened here to assign a 

file name. Now the current settings and log 
files can be saved under this file name. 

FatFS: Read 

The file with the setting parameters is read by 
the SD card 

FatFS: Write

 

The file with the current parameters is written 
by the SD card. 

FatFS: Log

 

The operating hours, pump starts and error 
notifications are transferred to the memory 

card. 

PS

MEGA 

1

www.lesa.de

         

8

 

Summary of Contents for PSMEGA 1

Page 1: ...e pump control Options FS PSMEGA1Freiluftsäule Messglocke V4A Schwimmschalter Tauchsensor Operating Manual www lesa de PSMEGA1_2v0 04092020 LESA Messtechnik Hegholt 59 22179 Hamburg Germany Phone 49 40 641 00 41 Fax 49 40 641 18 36 ...

Page 2: ...n menu images and notes on configuring the parameters 5 1 Table of possible settings 5 2 Supplements to the individual items in the configuration menu 6 0 Error reports in the display potential errors assistance 6 1 Table of possible fault messages 6 2 The settings in the menu cannot be changed 6 3 Motor contactor monitoring 7 0 Installation pneumatic and electrical connection and connection of 3 ...

Page 3: ...and maintenance of the switchgear must hold the requisite qualifications 2 3 Safety instructions for the operator Observe the existing regulations governing accident prevention the VDE specifications and stipulations of the local energy supply company When opening the device removal of the panel or terminal cover or working on the pumps the control must be switched off from the power supply throug...

Page 4: ...rnal audible alarm Collective fault alarm fixed voltage and potential free High water alarm potential free Memory number of pump starts Operating hours counter Ammeter Pump change Forced switchover High interference immunity Easy to operate ATEX mode Service mode Input for float switch dry run protection Analogue outputs 0 10 V and 4 20 mA Fault memory stores the last 4 faults Automatic display il...

Page 5: ... The green LED will blink If the pump is being run via the manual function then it will automatically shut off after 2 minutes and the green LED will flash irregularly The automatic and manual operation are shut down using this button The green LED is off The pump is switched based on the level The green LED is lit continuously If power is interrupted during manual mode then the control system wil...

Page 6: ...arm Is deactivated Is activated Is activated The fault information relay will be synchronized Instead of a flashing light it is possible to use a more economic steady burning light Thermal fault 1 Is deactivated Is activated Is deactivated There is no bimetallic contact alarm contact connected to terminal 12 13 Rot field fault Is deactivated Is activated Is activated in case the phase sequence is ...

Page 7: ... the menu 5 2 8 Error memory Last fault The last 4 errors that occurred remain stored in non volatile memory and can be retrieved in the menu under Last fault Caution Last fault 1 is the last fault that occurred If Last fault 1 is called up in the menu the last errors can be deleted from the memory with the acknowledge button 5 2 9 Rotary field error The rotary field monitoring monitors both the p...

Page 8: ...y language can also be changed when service mode is deactivated 5 2 17 Menu items data import and export The PSMEGA 1 offers the option of writing and reading configuration files 5 2 18 FatFS Filename At this point the file name is assigned for the configuration and log files The file name PSMEGA 1 is preset A code page can be opened by pressing the select acknowledge button A character can be sel...

Page 9: ... switch are functioning Reverse signals start stop level The settings for start and stop levels interfere Check level settings Reverse signals start flood level The settings for high water alarm and start level interfere Check settings for level Runtime error Pumps run without interruption for longer than the time set Check function of pump Floating switch malfunction Validation of floating switch...

Page 10: ...n must be paid that a right rotary field is created The terminals are labelled L1 L2 L3 N The PE terminals are implemented as a brass rail 7 3 1 Connection of the pump The connections L1 L2 L3 of the pump are directly attached to the motor contactor The protective earth conductor is connected to the remaining PE terminal The bimetallic contact which unlocks the pump after it has cooled down needs ...

Page 11: ...prox 24 volt In the delivered state the measuring range of the level sensor is set in such a manner that it matches the measuring range of the internal pressure sensor In the event that the level sensor should be connected with a different measuring range then the corresponding setting must be changed in the menu see section 5 2 14 The output is active i e the sensor is supplied with voltage by th...

Page 12: ...e 20 bis 50 C Dimensions 250 x 225 x 115 mm HxWxD Dimensions with cable gland and air connection Fuse 5 x 20 1AT alarm output Voltage supply for 4 20 mA sensor and float switch 24V DC Cable glands 2 x M25 x 1 5 1 x M16 x 1 5 3 x M16 x 1 5 blind plug Hose attachment 6 8 mm Other hose connections are available on request Software version Ver 0 3 When opening the device removal of the panel or termin...

Page 13: ...12 0 Annex Terminal block wiring diagrams Terminal connection of 3 motors Terminal connection of 1 motors Caution When connecting 1 motors the maximum connected load is 2 4 KW PSMEGA 1 www lesa de 13 ...

Page 14: ...Relay outputs signal inputs and analogue outputs PSMEGA 1 www lesa de 14 ...

Page 15: ...A 180 mm B 180mm o 5 0mm PSMEGA 1 www lesa de 15 ...

Page 16: ...le Alarmmodule GSM Module Messumformer Fernwirk Pumpsysteme Messglocken Pneumatische Leitung Schaltanlagenbau Automatisierung Fernwirktechnik Freiluftsäulen komplett bestückt mit PS1 LCD PS2 LCD Kompaktschaltschrank LCD2 System Metall GfK Außenschränke Leersäulen EVU Anschlusssäule Verschraubungen für pneumatische Leitung Schwimmschalter Tauchsensoren Ultraschallsensoren Stabsonden Druckschalter A...

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