Technical data

56 / 60 HBC-series V7 LV small types profi low power

Sparking prevent when connect higher voltage

When connecting a Li-xxx pack to the controller, strong sparking commonly occurs. Fast charging of the controller filter capacitors causes this.

The higher battery voltage (for the higher the cell count) and/or the lower the internal battery resistance (and the better the quality of the pack)

caused more intensive spark. The better the capacitors in the controller and the higher the capacity of the capacitors, the bigger spark occurs

also. Besides the small shock (due to the sparking), the charging current of the capacitors may be in, extreme cases, so great that damage or

destruction of the capacitors occurs. Solution is simple by using antispark resistor.

How to connect the positive leg or wire (shown here without insulation):

Connectors as well as the resistor are insulated by heat shrink tubing.

How to connect the battery:

1) connect the “– “ leg of the battery to the “– “ on the controller.

2) in the positive circuit, first connect the “+” leg of the controller to the auxiliary connector (to which a resistor with tens of ohms is

connected in serial). This will limit the charging current when connecting the wires and will charge the filter capacitors without sparking.

3) now connect the power wires (sparking will not occur). Main current flow is going through this power connector. You may start the motor

now.

Note:

There are no special requirements on the auxiliary connector. The current is small (1- 2A) and lasts only for a short time. Resistor value be-

tween 20 to 100Ω is depending on the voltage of the battery pack. However, it is not necessary to use these exact values because of wide var-

iation.

for 4 – 8 Lipol use 20Ω - 40Ω

for 8 - 12 Lipol use 50Ω- 100Ω

for 12 - 15 Lipol use 100Ω

Values are not critical and can changed within wide limits. Suitable charging current for capacitor is of the order 1 – 2A.

Resistors 22Ω, 47Ω a 100Ω are included in the controller.

Small charging current

High operation current

Auxiliary connector

Resistor 20 up to 100 ,

depending on the voltage

Power connector

To „+“ of the

battery pack

To the „+“ of the con-

troller

Thin auxiliary conductor

Power conductor

Thin auxiliary conductor

Soldered together