BERNT LORENTZ GmbH
Siebenstücken 24, 24558 Henstedt-Ulzburg, Germany,
Tel (+49) 0 4193 8806-700, www.lorentz.de
All specifications and information are given with good intent, errors are possible and products may be subject to change without notice.
Pictures may differ from actual products depending on local market requirements and regulations.
Guide for troubleshooting for PS2 pump controller
5.2. Advanced information:
The sensor connected to Analog input 1 is delivering data out of the
specifications (current signal). Follow the step-by-step guide in chapter 0 on
page 26 to identify whether the error is generated by the sensor or the
controller.
The sensor connected to Analog input 2 is delivering data out of the
specifications (current signal). Follow the step-by-step guide in chapter 0 on
page 26 to identify whether the error is generated by the sensor or the
controller.
The controller detected a too high temperature inside the controller and will
protect itself against overheating.
Firstly, the controller will reduce the power. If the temperature continues to
raise, the controller switches off until the internal temperature cools down.
Replace the Power-Board if the value in the actual data section is clearly invalid.
The pump system stops because of invalid data from the SunSensor. Check
whether the settings are correct (Installation Settings). The cause for this error
is likely a faulty SunSensor, weak connection or a broken wire.
Check the wiring between the sensor and the controller. The voltage of the
SunSensor should be at roughly 10 V (open circuit – disconnect from the
controller).
If the values in PumpScanner are showing invalid data (not suitable with the
reality), you need to replace the IO-Board.
Internal Comm
error (MPPT)
The communication between the Main-CPU and the MPPT-CPU is disturbed.
Replace the Main-Board.
Low Power
(for old firmware,
< 1.38 called
Motor control
error)
The controller is not able to initialize the motor during the start. The reason for
this could be a problem with the pump unit, PV or the controller. If the PV
Generator doesn’t deliver enough power to initialize the motor, this error could
also occur during the morning and the evening. Therefore, secure that the PV
Generator can deliver enough power.
Check whether there are signs for a defective PV Generator; check the open
circuit voltage and the short circuit current of each module.
An indicator for a broken motor is an unbalanced resistance between the motor
phases and a weak isolation. Follow the step-by-step guide to check the
indicators for a defective motor in chapter 6.9 and 6.10 on page 30 and 31. If
the pump has been pulled out of the well check whether the motor shaft is able
to turn by hand.
If there are no signs for a defect on the other components, replace the Power-
Board. If the failure still occurs after the replacement perform an investigation
on the motor and the pump end.
Short circuit motor
cable
The controller detected a short circuit between the motor phases. This is likely
a failure on the cable splice or motor cable.
Follow the step-by-step guide to check the indicators for a defective motor in
chapter 6.9 and 6.10 on page 30 and 31.
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