I have question X about my controller.
Well read the FAQ, it will guide you through the basics of this controller.
Well what is this Hua Tong OTO100?
That is the generic seller name for an expansive series of controllers built by Hua Tong/Ranton manufacturing. The majority of members bought their boards for ~3X.XX USD from
dhgate or alibaba.
They also sell on ebay for 5X.XX USD on eBay.
Why is the cost so low?
Well primarily due to the miracle of chinese manufacturing. The downside is that you have no idea what you are getting. Explained further later.
What is this constant talk about different boards and dates of manufacturing?
The first known iteration of the board, CA08 XM06AD_P04.1 on the silkscreen, is the board being discussed
There have been 3 other iterations since (
2nd Generation, C-D3.1,
4th generation)
The first generation and second generation boards were broadly similar. Cost saving measures at manufacturing lead to the mosfet switch.
The third generation was a extreme departure from the first 2 generations. New cpu and additional pads
Fourth generation
What type of MOSFETs are used?
CA08 XM06AD_P04.1 board
IRFB4410 Mosfets were used
In later revisions of the board
IRFB4710 Mosfets were used
What features does this board have?
Many of the boards features are only accessible by opening the controller and grounding pads to activate features
List of pads (First and Second Generation):
'X' is wheel lock in later versions, regen in the CA08 XM06AD_P04.1
'L' is reverse
'M2' is low speed**
'DS' 'SL' kill switch
'Q' is for cruise control
'SD' is disable motor (low speed) ?
'SL' is Low brake
'ZL' - 1:1 help ?
*please note that the pads names change between revisions
** only the 3rd generation has a three speed switch
Pads for the C-D3.1
Functions 1-8: need help
This board can not be run in sensorless mode.
How do I turn it on?
Connect the small red wire to V+ (pack positive) This provides power to the low voltage section of the board
Is there a HVC?
No, there is not. Usually over voltage situations lead to blown mosfets and gate drivers so use higher voltage with caution.
Then what is the highest voltage that I can run?
Many members have reported success with voltages at or slightly higher than 100V
Many believe that 22S ~92V is optimal as it allows for regen and is safer for the mosfets.
The mosfets and capacitors are rated at 100V
LVC?
~60V?
Easily modifiable.
Is there Regen?
Pack Voltage must be under <90V, so 22S is optimal.
I've never actually run regen could someone cover this?
Does it have programming ability?
Definitly no to the programming. Although it has a programming header in every revision of the controller you would need to know the cpu and be able to dump the firmware, not to mention figure out the machine code.
Will it run my motor?
If your motor is a brushless 3 phase motor then
yes!
Is there a Cycle Analyst plug.
Nope. A member has been able to create a
custom CA plug
What are all the
plugs? I did not receive documentation.
Alarm (4 pin, 3 populated): One wire has 5v, another has your battery + voltage, and the third is ground. Use it for a voltmeter if you'd like
Hall Sensor (6 pin, 5 populated)
Throttle (3 pin): Warning! – Wires in connector may be reversed.
60/120 wires: Auto its 60, if your motor runs weird, try 120 by connecting the two wires together. If you don't need them connected, simply snip them away.
Ignition: This can either be wired to a switch, that goes to your power supply +, or you can connect it directly to power supply + if you wish to have no switch for ignition.
This picture needs to be cleaned up
Cruise Control: Wire a momentary switch to it, and lead it to ground. When pressed, cruise control is enabled.
Voltmeter: This is simply wires that tell you how much battery/pack voltage you have, so you can lead these to a voltmeter if you want, or snip them away. Another use of the voltmeter wires is a DC-DC converter so you can run your aux lights/fans.
Controller not working?
Blink codes
1 flash: Standby, motor stopped
2 flashes: Throttle input fault or HV brake active
3 flashes: Locked rotor (start speed protection)
4 flashes:
5 flashes: High side FET shorted
6 flashes: Hall sensor fault
7 flashes:
8 flashes: Under voltage (LVC) active
Ebrake high/lo
Swap Mosfets
Greentime
Precharge