background image

Level control

 

It can be selected whether the control system will run over the internal level sensor (dynamic pressure, 
bubbler system), an external 4 - 20 mA level probe or float switch. 

CAUTION!

 

The input for the high water alarm (terminal 23 / 24) is always active and can be implemented 

as redundant monitoring. As soon as terminal 23 / 24 are connected, the high water alarm is triggered and the 
pumps are switched with a delay. 
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 approvals. 

20 mA => Level 

This setting adjusts the switch points and level display to a connected external  
4 - 20 mA level probe. The processor converts the input signal such that the correct level is displayed. 
When the measurement range for the 4 - 20 mA probe is changed in the configuration menu, the switch points 
will have to be re-configured, as they will have changed based on system reasons.  Thus, the correct order will 
always be to first configure the probe's measurement range and then the switch points. 
For use in an ex-zone, the corresponding requirements must be complied with, i.e. the 4 - 20 mA probe being 
used must have the corresponding approval and a fitting ex-barrier. If the switch points are outside the level 
probe's configured range, then the report will be shown  

"Check switch points". 

Country language 

The default settings are German / English / French / Italian / Spanish / Dutch / Polish / Czech. The country 
language can also be changed when service mode is deactivated.  

www.lesa.de

         

10

    

PS2 – SYSTEM ver.1.19

Summary of Contents for PS.2LCD

Page 1: ... 22179 Hamburg Germany Phone 49 40 641 00 41 Fax 49 40 641 18 36 PS 2LCD System com Micro controller Double pump controller Options Kompaktschaltschrank Micro Kompakt Kompaktschaltschrank mit Noteinspeisung und EVU Anschluß Operating Manual ...

Page 2: ...ions 3 Configuration control elements and function display 4 Configuration menu images and notes on configuring the parameters 5 Error reports in the display potential errors assistance 6 Test mode without pumps 7 Technical data 9 Norms 9 Annex Terminal block wiring diagrams Last update 05 01 2015 www lesa de 2 ...

Page 3: ...nal cover or working on the pumps the control system absolutely must be rendered current free via the pre fuse or a separate circuit breaker 1 4 Dangers of non compliance with safety information Non compliance with the safety information can lead to endangerment for persons and product system Non compliance with the safety information can lead to loss of all rights to damage compensation 1 6 Indep...

Page 4: ...ext display Thermal monitoring of the pumps Manual 0 Auto functions Pump switch off via turn off point and overrun Cancel button Runtime monitoring Forced pump switch on Variable staggered start delayed switch on Internal acoustic alarm Collective fault message zero potential High water alarm Memory no of pump starts Operating hours counter Input for high water float switch Pump change Forced swit...

Page 5: ...number of pump starts and motor current Moreover settings are made using the digital potentiometer If the knob is not moved for more than 20 seconds then the display will jump back to the default setting see above Configuration chapter Selection cancel Button Pressing this button will confirm the errors over current P1 P2 without load and will confirm thermal error 2 after remediating the cause Sh...

Page 6: ...e display s bottom line P1 Therm fault 1 Terminal 01 02 bi metal contact opened P1 Therm fault 2 Terminal 02 03 bi metal contact opened P2 Therm fault 1 Terminal 06 07 bi metal contact opened P2 Therm fault 2 Terminal 07 08 bi metal contact opened P1 or P2 Over current the respective motor circuit breaker has triggered Depending on how the PS2 SYSTEM s inputs are configured further error reports e...

Page 7: ...ssed Force activation Is deactivated 1 10s Is activated When the pumps are not triggered for 24 hours then they will automatically run for the configured Acoustic alarm Is deactivated is activated Is activated when there is an error the internal piezo buzzer will sound Intermitt alarm Is deactivated is activated Is activated The error report relay is clocked Instead of a blinking light a more econ...

Page 8: ...at time has passed there will be a change to the other pump This requires that both pumps be in automatic mode After three changes without interruption the alarm is additionally triggered and the display will show the runtime alarm report NEW Runtime monitoring The menu can be used to access the item running time max The default setting is for this value to be zero i e the function is deactivated ...

Page 9: ...nu under last error When the error is called up in the menu it can be deleted from memory using the cancel key Atex mode Atex mode has to be activated for pumps implemented in ex zones Atex mode impedes the pumps from being turned on via manual function via forced switch on or via remote control system until the switch off point is met If pumps are started via overrun time or manual function while...

Page 10: ...l probe The processor converts the input signal such that the correct level is displayed When the measurement range for the 4 20 mA probe is changed in the configuration menu the switch points will have to be re configured as they will have changed based on system reasons Thus the correct order will always be to first configure the probe s measurement range and then the switch points For use in an...

Page 11: ...hrough the additional use of thermistor relays and a corresponding pump lock For pumps over 7 5 KW it is generally recommended to use thermistor relays in order to secure the pumps are shut off even when the electronic system is out An external assessment module definitely needs to be used for assessing PTCs The inputs for the motor circuit breaker terminals 04 05 and 09 10 are configured such tha...

Page 12: ...ated then the pump will additional run for the duration of the overrun time configured The additional pressure sensor is always active irrespective of which system has been selected for level detection dynamic pressure bubbler system float switch or external 4 20 mA probe Float switch The inputs 11 12 to 17 18 can be configured for float switches The display shows which switch is connected Closing...

Page 13: ... is definitely established In order to avoid unnecessary interference peaks on the cable surplus cable should be rolled up In general it s always important to keep power electronics and the electronic system separate to the extent possible The bus cable should not come into contact with other cables prone to interference such as those coming from the circuit breaker or from volt and amp metres in ...

Page 14: ...ontrol cabinet section needed 136 5 x 136 5 mm Control device dimensions 290 x 125 x 60 mm Fuse control voltage 5 x 20 mm 100mA time lag Operating device lockable Attention The operating devices and or supplementary modules are not compatible with version 1 14 Technical specifications subject to modification Norms Applicable EC directives EC Low voltage directive 2006 95 EC EC Electromagnetic comp...

Page 15: ...www lesa de 15 PS2 SYSTEM ver 1 19 ...

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...

Reviews: