Calibrating a DP-CA

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nonlineartom   1 kW

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Calibrating a DP-CA

Post by nonlineartom » Sep 19 2012 10:09am

My Cycle analyst when plugged into the Lyen 12fet controller reads -11W when just in standby and seems to be showing far too many amps.


So whats the best way to accurately calibrate the CA, open up the controller and use a multimeter to read the resistor value of the internal shunt? Would I just hook onto the 2 solder points on the PCB for this and use the ohm setting?

Or is there an easier way?


On a connected note, just tried the 5304 V2 out for the first time, got it laced into a 20" rim. Gave it full acceration and the performance was quite dissapointing. The Controller should be giving out 45A, battery was fully charged at 50V and 3 speed switch was in the top speed mode, controller programming is totally stock. the acceleration kick was less than my bike at 1KW

Thanks in advance.
Commuter bike: 10T MAC Schwinn Panther Beach Cruiser on 12S LiPo, super stealth hill eater
Forest trail eater: Crystalyte 5306 KMX Viper with 24" wheel. 100A controller 18S LiPo
Pocket rocket: 8T MAC e-BMX 18s LiPo. Missile for testing to destruction
Summer ride: 8T MAC Kona Joe MTB / chopper / beach cruiser hybrid bike. 24" wheels and a lot lot of style.
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Respect and fear the ancient god LiPo and pray he is merciful.

IBScootn   100 W

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Re: Calibrating a DP-CA

Post by IBScootn » Sep 19 2012 10:43am

Well, I think there are two things to check. First, use the internal calibration (setup menu) to set zero As with no current flowinging. Second, get a quality ammeter (in USA, Sears has one for $60) to test that you have the correct rshunt value programmed into the CA.
Motorcycles:
ZEV T7100, 84V, 60AH, 65+mph; Mods: TNC throttle, windshield, Cycle Analyst , Cell Log , and custom charger
Kymco GT300i - for long rides through the Rocky Mountains
Big EV Grin. :)

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nonlineartom   1 kW

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Re: Calibrating a DP-CA

Post by nonlineartom » Sep 19 2012 1:18pm

in the CA menu (from memory) there is only the option to set the resistance value of the shunt. Where is the zero set? Was I correct in saying that you just measure the shunt value in the controller to get the value?
Commuter bike: 10T MAC Schwinn Panther Beach Cruiser on 12S LiPo, super stealth hill eater
Forest trail eater: Crystalyte 5306 KMX Viper with 24" wheel. 100A controller 18S LiPo
Pocket rocket: 8T MAC e-BMX 18s LiPo. Missile for testing to destruction
Summer ride: 8T MAC Kona Joe MTB / chopper / beach cruiser hybrid bike. 24" wheels and a lot lot of style.
--------------------------------------------------------------------------------
Respect and fear the ancient god LiPo and pray he is merciful.

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hjns   100 kW

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Re: Calibrating a DP-CA

Post by hjns » Sep 20 2012 6:48am

Henk


All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity: but the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence

alfantastic   10 kW

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Re: Calibrating a DP-CA

Post by alfantastic » Sep 20 2012 10:46am

nonlineartom wrote:in the CA menu (from memory) there is only the option to set the resistance value of the shunt. Where is the zero set?
Go into the advanced menu at the end of the normal settings menu :wink:

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