How to fix a Lenze Controller when the green LED is not lit?
If the green LED is not lit on your Lenze Controller, it could be due to no voltage at the +UG and -UG terminals. In this case, switch on the mains. Alternatively, connect the braking unit to the terminals +UG, -UG of the controller.
What causes irregular heating of brake resistors during parallel operation of Lenze Controller braking units?
Irregular heating of brake resistors during parallel operation of several braking units with a Lenze Controller can occur for several reasons. First, ensure that the braking units connected in parallel are connected to terminals +UG, -UG of the controller(s). Second, verify that the brake resistor is connected. Third, connect synchronization. Fourth, ensure that the switching thresholds of the braking units connected in parallel are set equally. Finally, make sure the braking units are correctly configured as master/slave.
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