CT-660B9 controller

M

moggy

1 W
Joined
Oct 6, 2007
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the CT-660B9 controller is dated 07.09.23 and the six pin connector has different colored wires then shown in the paper for it.
so i used the drawing on http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=4213&hilit=CT+660B9
file.php


i have 3 type 8g22nf 12v 50 ah gel cells for my 36 volts
I have the wiring as the instructions say . I am using a 36v thumb throttle wired to the 6 pin plug
red to red - black to black - green to green - the yellow I have connected to the blue wire from the power indicator plug
2 wire key connected to the lock connector white and yellow wires
the motor is a 36 volt 1500 watt off a fortress scooter . I removed the magnetic brake to cut down resistance

the throttle is working and the power and battery lights but I am only getting 12 volts out from the controller very low speed out of the motor

that was a lot faster with the original 24 volt controller that unfortunetly overheated on a 12 mile trip the airport with my Quadricycle thank fully it happened one the return trip a block from home
 
Perhaps try disconnecting everthing but the throttle and motor.

It sounds like it's in the "half speed" mode.
 
all I had connected was the motor throttle and key the controller popped!
I checked the fuse from the battery it was Ok
sending the controller back to tncscooters
 
did some tests 3 of the wire leads to the 4 brushes inside the motor had broken off . i managed to get my hads on a duplicate motor that had a ceased brake and and am using the parts to make a working motor
 
a new controller is in the mail it was sent on June 30th
also I have replaced the motor with a good used one the fortress motor is about $700 new
I have two fortress scooters one is 10 years old and it is faster than the newer model fortress from 2003
I replaced the 10 inch wheels with 13 " wheelbarrow tires on the second scooter to speed it up
 
I have the same motor (bought a salvaged Fortress 2000FS) that didnt have a controller but was complete otherwise. Ill keep reading your thread to see if the new controller works out. I guess FrankB tried the 48V 50Amp controller from Yi-Yun (Model LB-37) but it put too much stress on the internal gearing of the reduction unit. ref: http://www.theworkshop.ca/energy/lev/fs2000/5/5.htm and went back to the CT-660B9.

I was thinking of not using the motors internal gear box at all (around 20:1) and going with a belt drive direct from the other end of the shaft (where the brake was attached) using a belt system, someting more along the lines of 10:1. My motor has the Fortress Scientific tag on it that reads 22Volts, 15A 172rpm. I saw the asian manufacturers info on one of the threads, my concern is that my unit may be the 500W version if it is different from yours. Did your motor have any info labelling on it?

Jeff
 
according to frank its a 1500Watt DC motor that is rated @ 36VDC upto 40Amps of current.
 
I contacted the company that manufactures the fortress scooter to find out the wattage of the motor


Hello There,

We do not support the Fortress motor outside of use with our scooters, meaning at 24V with a 70A-90A controller. The motor spec. is as follows:

185 RPM , 400 Watts, 0.537 hp, 24 v, 40 amps

still waiting on the controller. I ordered it never showed up so another was just mailed out

does the wattage stay the same(400w) at 36 volts and the amps drop ? say to 11 amps
 
Hi Moggy,

From what I have been reading, most agree that the specs on most motors are rated at continuous use (on all the time) and you can run them at higher voltages (24 up to 36volts and amperages) as long as you can provide cooling for the motor and/or for short periods (hills, accelaration). So if you figure 36V at 40A you get 1440 watts up from 24V at 40A =960w. Im not sure where they get 400w from since 400w at 24V would be (400w/24v=16.67Amps). Again figure on max efficency of this motor bringing down these numbers further.

Again I am looking forward to your experience with the new controller since I have the same fortress motor you have.


Cheers,
Jeff
 
I see that is says Hyster on the page, is this from an electric forklift controller? My unit came without any electronics at all so I was hoping something from TNCscooters would work for me.


Cheers,
Jeff
 
I would like to run at 36Volts. Didnt you pop your previous CT-660B9? Was it just a heat issue or was the controller just not up to the task? I value your experience and could use any advice.

Thanks,
Jeff
 
not sure what was wrong with the first controller .
I will let ya know how the new one works out when it arrives next some time week .
if it does not work out I will return to using a 24v 60 amp fortress controller
 
Ok thanks.

I noticed that on the batt box that came with my fortress there was a 20A dual breaker for each of the 12V batteries. I doubt that the stock fortress controller would draw more then what that breaker is rated for even if it is spec'd at 60A.



Jeff
 
about the motor don't cut off the brake unless you really need to with the brake cut off the motor sins for a few seconds after the brake is released!

ill have to test quick stops when its all mounted on the bike again . I have have drum brakes on my rear wheels
operated by a brake leaver mounted with the steering wheel

PICT0245.jpg
 
package just arrived at the door .
TNC sent out a connector pack with it no charge there only 50 cents a pack . I didn't think to order them
besure to order them as well .

3 Pin Modular Connector
Electrical Parts - 101162 for the key

6 Pin Modular Connector
Electrical Parts - 101164 -throttle

2 Pin (Battery / Motor) Modular Connector
Electrical Parts - 101165


I have to solder the cables now and l double check all wiring .
then have a bud of mine that is a scooter tech will check it out as well
before I connect the batteries
 
Im looking forward to it, I want to put my 2000fs motor onto a project bike...

Cheers,
jeff
 
runs great only using a 20amp fuse and it did not blow ! will take video tomorrow
 
well just went for a quick run around the block all was going well I was checking for heat evey now and then in wires and motor
was going full speed and decided to pedal along with the motor when i heard a pop the 20 amp fuse from the batteries was fine the power light for the thumb control was on but no juice to the motor .

I was flat road the whole time and only out for 10 minutes at the most the controller was warm but not hot .

When battery voltage falls to a specified
value, the controller cuts off battery output
preventing over discharge and extending
battery life. (The cutoff value is
approximately 31.5± 0.5 volts, but varies
drastically from controller to controller.)

will check voltage just incase
 
voltage is ok looks like a bad controller so I do not recommend the CT-660B9 controller at this time

Im going to replace it with a 24v 60 amp scooter controller soon as I can .
 
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