Info on this Lyen controller ?

I have had a couple of controllers in storage for a couple of years now.
One
is a Lyen 9 fet with 3077 fets .
However
I did not buy this controller from Lyen, and do not know how to contact him.

Before I hook this up to a battery pack . ( I want to use 16s pack or even 21S Pack )
I better get some info on this controller.

One question is ... since there is no ohm number anywhere on the controller how do I calibrate it correctly with a Cycle Analyst 2.3 ?

Also what is the upper Voltage and Amperage I can run through controller ?

I will try to post some pictures since I did open it up.

Pictures ...

On a small square chip it says ... ( part of it can be seen on the second picture in above post )

A very large G
then below that
gpm8f 3108a - ql011
then below that
mn8h26
then below that
1409

web search edward lyen

3077 will tolerate 16s 67.2v

up to 75v no 21s

calibrate shunt value use external power meter

Thanks, from what I have read here on E.S. Edward Lyen is hard to get in touch with .
Perhaps because he no longer sells the controllers ?

Good to know about the 3077's tolerating up to 16 s but not 20 s

I have some 6s batteries so wonder if the 3077's will tolerate 18s ?


Calibrate shunt with a meter ? a regular Multi-Meter ?

How ?

( all I have at this time is the cheep one from Harbor Freight , since it is more accurate than the one I bought from Hobby King ) .

Thanks

kcuf said:

web search edward lyen

3077 will tolerate 16s 67.2v

up to 75v no 21s

calibrate shunt value use external power meter

Click to expand...

fully charged 18s

ragged edge v max 3077

of course load will drop voltage

do you feel lucky

measure battery amps

small amp load fine

spin wheel open air maybe 2a

or simply rig dummy load

adjust ca shunt value to match

external amp meter measurement

future reference jot down

You say they can handle up to 75 volts ? ,

if they can handle up to 75 volts then by theory I could use 18s as long as I only charge my 6 s packs , x 3 , up to 4.1 volt per cell . Which is easy do do since I use lipo's and lipo charger that is adjustable . Besides When I have charged two sets of packs lately , 6s packs and 7s packs, the charger says 4.2 volts per cell so I turn off the charger and they drop down to 4.1x per cell after being off the charger for a few minutes.

The only thing I found on youtube for shunt values , uses a Ammeter and then only cheep one with needle . I would have to find a digital Ammeter, and then ...

I am guessing connect the controller to battery and motor, put bike up on stand, take off cover of controller , run motor then measure ... how with probes on each side of shunt wire or on the board underneath where the shunt wire is soldered ?

what i say 3077 doesn't really matter

look it up yourself




no probing shunt

insert amp meter

between battery controller

spin wheel off ground

should pull around 2A

many multi meters handle 10a

less accurate simpler just estimate 2a

wheel off ground

adjust ca shunt based on that estimate

have a nice day