Speed Controller SPD-48500B Installation and Wiring

Rated Voltage   48 Volts
Rated For Motors   Up To 500 Watts
Maximum Current   20 Amps
Rated For Chargers   Up To 3 Amps
Conversion Efficiency   95%
Under Voltage Protection   42 Volts
Recommended Fuse Size   25 Amps
Dimensions (including mounting tabs)   4" Long x 2-5/8" Wide x 1-1/2" High
Under Voltage Battery Protection: When the battery pack falls below a specific Voltage the controller turns the motor off preventing over discharging of the battery pack which extends the battery packs lifespan. (The cutoff value is approximately 42 Volts 0.5 Volts)
Motor Cut-Off During Braking: When the brakes are engaged the brake switch signals the controller to turn off the motor.
*Power Connector
Red = Positive
Black = Negative

Mating Connector
Item # CNX-50

Required Connection
Motor Connector
Blue = Positive
Yellow = Negative


Mating Connector
Item # CNX-50

Required Connection
Throttle Connector
Red = + 5 Volts Output
Black = Ground
Blue = 1-4 Volts Input


Mating Connector
Item # CNX-52
 
Required Connection

Key or Power Switch Connector
Blue & Red Disconnected = Power Off
Blue & Red Connected = Power On


Mating Connector
Item # CNX-51


Required Connection
Battery Charger Connector
Red = Positive
Black = Negative

Mating Connector
Item # CNX-51
 
~Optional Connection
Brake Lever Switch Connector
Black & Yellow Connected = Motor Off
Black & Yellow Connected = Brake Light On


Mating Connector
Item # CNX-51

~Optional Connection 
Brake Light Connector
Goes To 36 Volt Brake Light
Red = Positive
Black = Negative


Mating Connector
Item # CNX-51

~Optional Connection
Power Light Connector
Goes To 36 Volt Power On Indicator Light
Red = Positive
Black = Negative


Mating Connector
Item # CNX-51

~Optional Connection
*The power connector should be the last connection made.
*Fuse or circuit breaker protection is required between speed controller and battery pack.
~Optional Connections do not need to be hooked up for the speed controller to operate.