Lokommander II Next18 ECU
User Manual firmware 5.10.306
Version 0.5.07
Page 27 of 118
CV129: The averaging amount during BEMF measuring. The factory default is 6. For better quality
motors with multiple poles, the averaging amount may be decreased. Value >10 is not practical.
CV130: the BEMF measurement delay. The purpose is to avoid measurement errors due to the pulse
generated by the motor inductance after power-off. The factory default is 6. This must be reduced
carefully because at a certain moment the measuring time can start during the motor pulse that will
alter the measurement accuracy. It is recommended to experiment lowering the value only for high
quality multi-pole motors (such as the Faulhaber or Maxon). For lower quality motors (such as the 3-
pole Piko, Hobby category locomotives) increase of the value might be required.
The table below contain the values range of CV9.
For CV9 = “9”
(manual mode) the CV128/129/130
value range is mentioned. Setting the values outside the range will not cause decoder malfunction because
he is limiting the values entered in the CVs only at the specified range.
The motor driver circuit is equipped with short circuit and overcurrent protection. The protection is
triggered by the first current pulse which exceeds the detection threshold. False short circuit detections may
happen due to current spikes on some motors. A current spike counter can be enabled, which counts the
number of short spikes before protection is triggered. This number can be set in CV211. The default value is
zero, so protection is triggered after the first spike. The recommended range is 0-10. A much higher value
can lead to destruction of motor driver in case of short circuit.