Kelly Ebike Brushless DC Motor Controller User
’s Manual
V 3.3
Page 8
7.
5V: 5V supply output, <40mA
8.
Micro_SW: Throttle switch input.
9.
Reversing switch input
10.
Brake switch input
11.
Hall phase C
12.
Hall phase B
13.
Hall phase A
14.
RTN: Signal return
Notes:
1. All RTN pins are internally connected. RTN is internally connected to B-.
2. Switch to ground is active. Open switch is inactive
Caution:
•
Do not apply power until you are certain the controller wiring is correct and has been
double checked. Wiring faults will damage the controller.
•
Ensure that the B- wiring is securely and properly connected before applying power.
•
The preferred connection of the system contactor or circuit breaker is in series with the B+
line.
•
All contactors or circuit breakers in the B+ line must have precharge resistors across their
contacts. Lack of even one of these precharge resistors may severely damage the
controller at switch-on.