HITEC SP-520 - Manual

SP-520 PLUS Electronic Speed Controller
Thank you for purchasing the HITEC SP-520 PLUS electronic speed controller
with reverse. This unit features competition grade performance with reversing speeds
in a fully proportional mode. It can handle stock and modified class motors, with
internal TEMPFET sensors to prevent overheating and damaging the unit.
Additionally, the unit is polarity protected to prevent damage in the case of an
accidental reversed hook-up. The SP-520 has the highest power output and best
power transfer efficiency in its class.
WIRING DIAGRAM
FEATURES
• MOSFETs provide high effciency with minimum power loss.
• TEMPFET protction prevenst damge due to overheating.
• Wide operating range of 6.0 to 8.4 volts with BEC. (5-7 cells)
• Light weight aluminum heatsink with new patented heat conductive silicon
boot. (PAT # 4528)
• Polarity protected circuit.
• Reverse delayed system (0.45 second delay time)
SPECIFICATIONS
FORWARD REVERSE
• Peak amperage capability 560A 240A
• Continuous amperage capability 140A 60A
• Voltage loss 0.0125 ohm 0.025 ohm
• BEC voltage output 5.6V
• TEMPFET cutoff point 250 degrees F (120 C)
• Dimensions 1.77x2.16x0.78 inch (45x55x20mm)
• Weight (with heat sink) 2.6oz (75g)
INSTALLING THE SP-520 POWER
1. MOUNTING LUGS
Installation of the SP-520 is made easy for the car driver with the use of the servo
style mounting lugs. These lugs are also removable by separating the case halves of
the contoller and allowing the mounting lugs to slide out.
2. CONNECTORS
If you have TAMYIA style connectors on your car, the SP-520 will be an exact match
for you. However, if you choose to use different connectors for your SP-520, please
see the section of these instructions which describe the wiring diagram and how to
hookup the SP-520.
3. MOUNTING & CONNECTING
Mount the SP-520 into place within the chassis of your car, using the mounting lugs
or double sided tape on the back of the case. Please insure that the controller is
securely held in place. Once the controller is in place, disconnect the motor wires and
connect the main battery wires from the car battery to the controller.
Note: Always check the polarity of the wires prior to plugging in the battery to the
controller. Reversing the polarity may result in damage to the controller, despite the
reverse polarity protection within the SP-520. If you do accidentally connect the
controller in reverse polarity, immediately disconnect the wires and allow the
controller to rest for at least one minute. Check for the correct polarity and then
reconnect the main battery wires using the correct polarity. The SP-520 should now
operate normally.
Once the main battery and controller are connected, turn the car radio and
transmitter to the “ON” position. Check to see if the red or green indicator light on the
SP-520 comes “ON” when you advance the throttle stick forward. If not, the
transmitter reversing switch should be used to correct the direction. Check the
operation of the steering servo for proper movement too. If the radio functions
correctly, place the car on a block or car stand so that the rear wheels are not touch-
ing the ground. Connect the motor wires and be aware that the motor may begin
running at this time.