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Old 10-29-2011, 01:12 AM   #1
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Default Club Car Precedent IQ Controller settings

I am hoping that someone in this forum can help me to understand the many settings that are available for the CC Precedent. I've asked TahoeDawg about this and for some reason he never posted an answer. He did post all the speed ranges for the $1, 2, 3, & 4 settings,..but he has not confirmed my comments about the "Speed Quality" settings of "0 to 10" and the effect on the actual speed. I have the 2008.5 CC Precedent with IQ.

Another key setting in the cart is the function that helps to control the cart as rest. My understanding is there are 3 possible settings which basically are Mild, Medium, and aggressive. This has to do with the cart at rest on a hill. My golf course is not that hilly but there are several good slopes. I have noticed that when my cart comes to a stop is seems to be locked in place if I'm on any simple slope. I also find that I can't move the cart by hand without a lot of force. So my question is,..how does the controller do this. It has to use the motor and push current through the windings to HOLD the cart. I would like to know how much power that is and if it is dissengaged if I lock the park brake.

I have seen other post where people talk about "Resetting" the controller, and I would like to know what this is and what it does and when would someone choose to use it,.. since I would think that it would take the speed control back to setting #1

Are there any lubrication, grease, connections that should be serviced on a regular basis. Also, the other day when my cart was parked in the garage I had the tow/run switch in tow, the brakes off, and the power switch off,..but I still could not push the cart 2 inches. What did that.

Finally, since I have an "IQ" cart, can someone tell me what this really means in terms of function, controller, options, etc. Thanks in advance for all your help.
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Old 10-29-2011, 07:38 AM   #2
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Default Re: Club Car Precedent IQ Controller settings

The "mild, medium and aggressive" are the settings within an IQ controller for regenerative braking . . . as to exactly "how" it works, I have no clue . . . my "guess" would be somehow/someway the controller is braking with the motor . . . I do not see any mechanical brake on the back end of the motor, so somehow the controller is limiting the motor's speed . . . may even put motor into reverse . . ??
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Old 10-29-2011, 08:03 AM   #3
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Default Re: Club Car Precedent IQ Controller settings

Doesn't it dictate how much amperage is delivered to the motor via the controller?
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Old 10-29-2011, 08:16 AM   #4
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Default Re: Club Car Precedent IQ Controller settings

Quote:
Originally Posted by erict View Post
Doesn't it dictate how much amperage is delivered to the motor via the controller?
Not sure . . . picture running downhill . . . freewheeling, foot off accelerator . . cart will slow down if going over 11mph . . how does it do that? Foot is off accelerator, so no power is being fed to motor via controller, but controller can still "brake" the motor . . . some regenerative braking systems, ie, hybrids, can reverse the motor somehow to slow vehicle (and use this energy to recharge the batteries) . . . not sure if golf cars do this or not . . . need someone smarter than me to explain it . . .
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Old 10-29-2011, 08:27 AM   #5
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Default Re: Club Car Precedent IQ Controller settings

Quote:
Originally Posted by Stevegrmich View Post
Not sure . . . picture running downhill . . . freewheeling, foot off accelerator . . cart will slow down if going over 11mph . . how does it do that? Foot is off accelerator, so no power is being fed to motor via controller, but controller can still "brake" the motor . . . some regenerative braking systems, ie, hybrids, can reverse the motor somehow to slow vehicle (and use this energy to recharge the batteries) . . . not sure if golf cars do this or not . . . need someone smarter than me to explain it . . .
I have never tried it but wonder if going down hill with foot on accelerator that the cart will pick up speed? I think with your foot off the accelerator while going down hill and the cart picks up speed the MCOR and controller must communicate and know this is not correct and applies the braking. Just a WAG
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Old 10-29-2011, 08:32 AM   #6
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Default Re: Club Car Precedent IQ Controller settings

Here is an answer I found about regen braking on golf carts:

" An electrical motor converts electric energy by using electrical energy from the battery to mechanical energy by coursing the electricity through coils of wires that are in a magnetic field. The negative charge of the battery is repulsed by a positive charge created by magnets in the motor. This causes the motor to rotate, and mechanical gears and such rotate the axle which drives the wheel. Eventually the battery will expel all its electrical energy by this process.

The regenerative braking reverses some of this action by creating an electrical current from the mechanical action of the wheels. The charge of electricity is produced by rotating a set of wires within the magnetic field. The energy source is created by the resistance of the wires rotating within the magnetic field. So the kinetic energy of the wheels is used to create electrical energy which is stored in the battery. You can't get something out of nothing, so the conversion of the mechanical energy to electrical energy causes the motor to slow down, and the cart to brake."


That may explain the "process", but still doesn't explain to me how the cart "knows" when to use the braking process . . .

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Old 10-29-2011, 09:29 AM   #7
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Default Re: Club Car Precedent IQ Controller settings

Regenerative braking will occur if the cart exceeds the maximum speed setting (presumably going down a hill) with the pedal down, and when the cart exceeds 11 mph with the pedal up (IQ system, IQ plus is programmable for pedal-up braking). The amount of pedal-up braking is programmable from mild to aggressive. The accelleration is programmable. Roll-away braking is a separate entity. If the cart thinks it is supposed to be stopped, it will use the motor to prevent roll-away on hills. You can park your IQ vehicle on a good slope and try it: Hit the pedal to go downhill then release it and the cart will roll down unimpeded (up to 11 mph on an IQ vehicle). Merely release the brakes without touching pedal and the roll-away feature will restrict it to move like molasses.

Most of this is in the owners manual which is easy to download from Club Car.

What has me scratching my head is the cart resisting rolling with brakes off and switch in tow. It shouldn't do that to my knowledge; perhaps the brakes are dragging. If the roll-away feature is working in the tow position I think it may be important to check that switch. A man needs to be able to turn that controller off.
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Old 10-29-2011, 09:54 AM   #8
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Default Re: Club Car Precedent IQ Controller settings

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Originally Posted by bbriggs View Post
Regenerative braking will occur if the cart exceeds the maximum speed setting (presumably going down a hill) with the pedal down, and when the cart exceeds 11 mph with the pedal up (IQ system, IQ plus is programmable for pedal-up braking). The amount of pedal-up braking is programmable from mild to aggressive. The accelleration is programmable. Roll-away braking is a separate entity. If the cart thinks it is supposed to be stopped, it will use the motor to prevent roll-away on hills. You can park your IQ vehicle on a good slope and try it: Hit the pedal to go downhill then release it and the cart will roll down unimpeded (up to 11 mph on an IQ vehicle). Merely release the brakes without touching pedal and the roll-away feature will restrict it to move like molasses.

Most of this is in the owners manual which is easy to download from Club Car.

What has me scratching my head is the cart resisting rolling with brakes off and switch in tow. It shouldn't do that to my knowledge; perhaps the brakes are dragging. If the roll-away feature is working in the tow position I think it may be important to check that switch. A man needs to be able to turn that controller off.
Yea...we understand what you wrote . . we are just trying to figure out how it does it . . .
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Old 10-29-2011, 11:46 AM   #9
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Default Re: Club Car Precedent IQ Controller settings

BBriggs....

i just replaced a friends curtis controller that was smoked..... what i also found was a
defective tow/run switch . (SHORTED CLOSED CONTACT )

I wanted to see if it was a mechanical defect or electrical. I found the contacts in the switch WELDED closed.

you might want to check yours that would account for regenerative breaking when the controller is shut off in TOW MODE
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Old 10-29-2011, 01:44 PM   #10
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Default Re: Club Car Precedent IQ Controller settings

Im no motor head but this is how I understand DC motors.

DC motors are both motors and generators, if you give it volts it turns, if you turn it, it gives volts.

If you shunt a DC motor by adding a resistor across the windings and try to roll down hill it will go slow,
if you short out the windings and try to roll down hill it will lock up and not roll.

thats all i know
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