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HBC-series V7 LV+MV
Sparking prevent when connect higher voltage
Controllers 18063, 100120, 25063
and
140120
have an internal antispark resistor. Just connect the cable with an auxiliary jack point
Basic description of the controllers
), without external resistance. But the principle is the same and is described
for the following text.
When using additional capacitors block
10x1G0.63
or
8x0G33.160 (due to long power cables, etc.),
it is necessary to use an
external antispark resistor
for higher power (load), also for the above types of controllers.
The resistors must be sized appropriately performance types, correct value is 5
–
10W.
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 100
Ω
depending on the voltage of the battery pack. However, it is not necessary to use these exact values because of wide varia-
tion.
for 4
– 8 Lipol use 20
Ω - 40Ω
for 8 - 12 Lipol use 50
Ω- 100Ω
for 12 - 24 Lipol use
100Ω
Values are not critical and can change within wide limits. Suitable charging current for capacitor is of the order 1
– 2A.
Recommended external resistor power rating for types 40063 and 220120 is 5
– 10W.
Small charging current
1
High operation current
2
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
Power conductor
Thin auxiliary conductor
Soldered together
Soldered together
