LEGO and the LEGO logo are trademarks of the LEGO Group. ©2014 The LEGO Group. 068923.
4
Element Guide
Display Measurements
Accumulated joules
The maximum amount of accumulated joules that can be stored is 100 J.
The reading of 100 J will start blinking on the display with one second intervals
when this maximum is reached. Input voltage will remain measured in the display,
but input current and input wattage will go to zero. The output measurements will
depend on the load applied. Pressing down and holding the On/Off button for two
seconds will reset the joules measurement to 0 J. Please note that this is not an
indication of the charged status of the Energy Storage.
Blinking lightning symbol
A lightning symbol appears blinking with one second intervals on the display, when
one of two possible situations have occurred:
• If the number of joules remains the same, then you should be able to continue your
activity, but the Energy Storage power level is low and you should soon charge the
Energy Meter.
The Energy Storage should be charged before each lesson.
• If the number of joules resets to 0 J and output voltage goes to zero, then the
Energy Meter has been overloaded and must be recharged.
Do not overload the Energy Meter.
Constant lightning symbol
A constant lightning symbol appears on the Energy Meter display when the Energy
Storage needs to be charged.
Error
A triangle with an exclamation mark appears on the display when there is an error on
the Energy Storage. Measurements are not valid. Remove the Energy Storage, check
the connecting parts and see if they need cleaning. Reconnect the Energy Storage
to the Energy Display and charge the Energy Meter. If the error triangle reappears,
replace with a new Energy Storage.
Input voltage
Input current
Input wattage
Accumulated joules
Output voltage
Output current
Output wattage