Hobbywing XTREME STOCK ESC User Manual

Page 2

USER MANUAL OF XTREME STOCK ESC HW-SM502ENG-20120817 Page 2 of 4

Version

Programmable Items Amount

V2.0_100528_MOD

V2.0_100518STOCK

V2.0_100422STOCK

V1.10_090205_MOD

V1.10_090323a_m

V1_508_NO timing

【TROUBLE SHOOTING】

Trouble

Possible Reason

Solution

The connections of battery pack are
not correct

Check

the

power

connections,

replace

the

connectors or switch

The switch is damaged

After power on, the red LED lights, but motor
cannot run

Throttle signal is abnormal

Check the transmitter and the receiver, and check
the signal wire connection of your ESC

1) The wire connections between
the ESC and the motor need to be
changed

2) The chassis is not suitable for this
ESC

1) The battery has a bad discharge
performance

1) Use a better battery

2) The gear rate is too aggresive so
the motor load is too heavy

2) Use lower KV motor or change the gear rate or
set the "Start Mode" more softly
1) Check the connection of Hall sensor cable to
make it firmly connecting the motor with the ESC

2) The Hall sensors in the motor are damaged,
please change the motor

The motor trembles but cannot start smoothly 1) The connctions are not A-A, B-B

and C-C
2) The ESC is damaged

1) Check the connections

2)Contact the dealer for after-sales service

Check the voltage of the battery pack

The motor runs in the opposite direction

1) Swap any two wire connections between the
ESC and the motor. (Note: This method is ONLY
available for SENSORLESS motor )
2) Please don't use the ESC for this special
chassis

When accelerating quickly, the motor stops or
trembles

The motor stops running while in working
state

The ESC has entered the

“ Low

voltage protection mode

” or the “

Over-heat protection mode”

The

red

LED

flashes

means

Low

voltage

protection, please replace the battery pack
The

green

LED

flashes

means

Over-heat

protection, please wait for some minutes to cool
the ESC

After power on, motor doesn

’t work, no sound

is emitted

After power on, motor can't work, but emits

“

beep-beep-, beep-beep-

” alert tone. (Every “

beep-beep-” has a time interval of 1 second )

Input voltage is abnormal, too high
or too low

When the throttle stick is in the neutral range,
the red LED and the green LED flashes
synchronously

The motor is a sensored motor, but
the ESC detects abnormal signal
from the sensor, so it changes to
sensorless mode automatically

【PROGRAM THE ESC】
1. Programmable Items List

(The italics texts in the form are the default settings)

1. Running Mode

Forward

with Brake

Forward/Reverse

with Brake

Foward/Reverse

(For Rock Crawler)

2.Drag Brake Force

10%

20%

40%

60%

80%

100%

3.Low Voltage
Cut-Off Threshold

Non-

Protection

2.6V/Cell

2.8V/Cell

3.0V
/Cell

3.2V
/Cell

3.4V
/Cell

4.Start Mode(Punch)

Level1

Level2

Level3

Level4

Level5

Level6

Level7

Level8

Level9

5.Max Brake Force

25%

50%

75%

100%

6.Max Reverse Force

25%

50%

75%

100%

7.Initial Brake Force

= Drag Brake

Force

20%

40%

8.Neutral Range

6% (Narrow)

9% (Normal)

12% (Wide)

0°

3°

6°

9°

12°

15°

18°

21°

0.00 °

3.75 °

7.50 °

11.25 °

15.00 °

18.75 °

22.50°

26.25°

10.Over-heat Protection

Enable

Disable

11.Reserved item

note2

12.Turbo Timing

OFF

1°

2°

3°

4°

5°

6°

7°

8°

13.Boost Start RPM

3000

4500

6000

7500

9000

10500

12000

13500

15000

14.Turbo Delay

0.1s

0.2s

0.3s

0.4s

0.5s

0.6s

0.7s

0.8s

15.Timing Punch
(RPM/Degree)

200

300

400

550

700

850

1000

9.Boost Timing

note1

Timing

Programmable

Items

Programmable Value

Basic Items

Advanced Items

Note1

：When using the firmware with 15 programmable items, the 9

item will be

“Boost Timing”. Otherwise the 9

items will be

“Timing”, and 11

to 15

items will be canceled. The factory default firmware is V2.0_100518STOCK (with 15 programmable items).

The optional firmware versions are as follows:

The ESC firmware with 15 programmable items uses Boost Timing and
Turbo technology, which is a great innovation for STOCK racing. For a
standard 11.5T STOCK motor, powered by 2S Lipo battery, when the ESC
applies the maximum timing to the motor, it runs at an incredible speed
more than 110000 RPM, which is much close to the speed of a MODIFIED
motor (While using traditional technology, such a 11.5T STOCK motor
only runs at about 26000RPM).

But the new technology also has some negative impacts; it brings more
power loss and lower efficiency of the whole system. So it is very
important to set the programmable items of your ESC correctly.

Note2

：The 11

item is reserved item, with no function.

Note3

：

Please check the manufacturer’s website to get information about the latest software for XERUN-XTREME STOCK ESC.

2. Explanation For Each Programmable Item

2.1. Running Mode: With

“Forward with Brake” mode, the car can go forward and brake, but cannot go backward, this

mode is suitable for competition;

“Forward/Reverse with Brake” mode provides backward function, which is suitable for

daily training.
Note:

“Forward/Reverse with Brake” mode uses “Double-click” method to make the car go backward. When you

move the throttle stick from forward zone to backward zone for the first time (The 1

“click”), the ESC begins to brake the

motor, the motor speeds down but it is still running, not completely stopped, so the backward action is NOT happened
immediately. When the throttle stick is moved to the backward zone again (The 2

“click”), if the motor speed is slowed

down to zero (i.e. stopped), the backward action will happen. The

“Double-Click” method can prevent mistakenly

reversing action when the brake function is frequently used in steering.
By the way, in the process of braking or reversing, if the throttle stick is moved to forward zone, the motor will run forward
at once.
“Forward/Reverse” mode uses “Single-click” method to make the car go backward. When you move the throttle
stick from forward zone to backward zone, the car will go backward immediately. This mode is usually used for the Rock
Crawler.

2.2. Drag Brake Force: Set the amount of drag brake applied at neutral throttle to simulate the slight braking effect of a
neutral brushed motor while coasting.

2.3. Low Voltage Cut-Off: The function mainly prevents the lithium battery pack from over discharging. The ESC
detects the battery

’s voltage at any time, if the voltage is lower than the threshold for 2 seconds, the output power will be

reduced 70%, after 10 seconds the output power will be completely shut off and the red LED flashes in such a way:
“☆-☆-, ☆-☆-, ☆-☆-”. Please stop your car at the track side as soon as possible to avoid obstructing other racing cars.
Please note that the cutoff threshold is basically calculated for each LITHIUM (Lipo) battery cell, so for NiMH battery
packs, if the voltage of the whole NiMH battery pack is higher than 9.0V, it will be considered as a 3 cells lithium battery
pack; If it is lower than 9.0V, it will be considered as a 2 cells lithium battery pack. For example, a NiMH battery pack is
8.0V, and the threshold is set to 2.6V/Cell, so it will be considered as a 2 cells lithium battery pack, and the low-voltage
cut-off threshold for this NiMH battery pack is 2.6*2=5.2V.
There are 6 preset options for this programmable item. You can customize the cutoff threshold by using an advanced
LCD Program Box (Optional equipment) to trim it with a step of 0.1V, so it will be more suitable for all kinds of batteries
(NiMH, NiCd, Li-ion, Lipo, LFP, etc).

2.4. Start Mode (Also called

“Punch”): Select from “Level1” to “Level9” as your like, Level1 has a very soft start

effect, while level9 has a very aggressive start effect. From Level1 to Level9, the start force is increasing. Please note
that if you choose

“Level7” to “Level9” mode, you must use good quality battery pack with powerful discharge ability,

otherwise these modes cannot get the burst start effect as you want. If the motor cannot run smoothly (the motor is
trembling), it may caused by the weak discharge ability of the battery pack, please choose a better battery or increase
the gear rate.

2.5. Maximum Brake Force: The ESC provides proportional brake function. The brake force is related to the position
of the throttle stick. Maximum brake force refers to the force when the throttle stick is located at the top point of the
backward zone. A very large brake force can shorten the brake time, but it may damage the gears.

2.6. Maximum Reverse Force: Sets how much power will be applied in the reverse direction. Different value makes
different reverse speed.

2.7. Initial Brake Force: It is also called

“minimum brake force”, and it refers to the force when the throttle stick is

located at the initial position of the backward zone. The default value is equal to the drag brake force, so the brake effect
can be very smoothly.