Need more Information FUNC -> SETUP Menu

[Guest]

Hello,

I need more Information about the Menu-Points in the Sub-Menu FUNC -> SETUP:

Shutdown Time ?
Charge Time ?
Discharge Time ?
Deep Discharge ?
Norm Discharge ?

Range 00-FF -> hours ? minutes ?

best regards
Lars Weiß

[Dataman (Neil Parker)]

Hi Lars,

If you have a copy of the S4 manual you will find this information on page 68. There is an electronic copy available from our website.

Neil

[Dataman (Neil Parker)]

Lars,

After looking into this further I have come up with the following:

> Shutdown Time ?
Time to S4 shutdown in minutes. Default value is 30 minutes.
It is in HEX so 30 (minutes) = 1EH

> Charge Time ?
> Discharge Time ?

Default value for ChargeTime is 11 (0BH) resulting in 300mA, 50Hz
Default value for DischargeTime is 28 (1CH) which is internally
multiplied by 16 to get 450 resulting in 40mA current.

ChargeTime is the number of 100's of halfcycles, minus 1, to
add 1 mAh charge to the battery at the mean charging current.
At 300 mA mean current, 11 for 50Hz, 13 for 60Hz. Thus, at 50 Hz,
1200 cycles takes 12 sec, giving (11+1)*300 = 3600 mAsec = 1 mAh

DischargeTime is the time taken in half-secs to consume 2.5 mAh
at the mean discharge current, and is calculated as ..
DischargeTime = (2.5*60*60*2)/(mean discharge current, mA)

These values are somewhat arbitrary and although they do represent
real units of charge, their only purpose is to clock the Gas Gauge,
which assumes a battery capacity of 640 mAh .. therefore, "1 mAh"
really means "1/640th battery capacity" and the accurate formulae
are: ChargeTime = (3600*640*LineFreq)/(50*ChargeCur*BattCap)-1
DischargeTime = (18000*640)/(DischargeCur*BattCap)

NOTE: S4DischargeTime shown on S4 display is internal DischargeTime
divided by 16 (S4DischargeTime=DischargeTime/16)

> Deep Discharge ?
> Norm Discharge ?
When BattContents falls to this Deep Discharge value, turn the charger on
The default value is 64 (40H) for battery control low switch val
Each unit is equl to 2.5 mA.

If BattContents below this Norm Discharge value at switchon, charge
battery.
The default value is 192 (C0H) for battery control high switch val
Each unit is equl to 2.5 mA.

Hope this helps.

Neil

[Guest]

Hi Neil

after studying this i am still no further forward in understanding it. I have recently changed the battery pack from the standard 640mah to a 1000mah so was looking into changing the charge and discharge times as discharge times will now be roughly 1/3 longer

also i cannot understand the charge discharge figures as they seem to be different on my S4

Default value for ChargeTime is 11 (0BH) resulting in 300mA, 50Hz. MINE is 07 (07H) (also on 50hz)
Default value for DischargeTime is 28 (1CH), MINE is 17 (11H)

also it says it results in a 300mh charge, but the S4 charges at up to 650mh

i think it must be me being dumb, but what do i change the figures to, i cant work it out

DischargeTime = (18000*640)/(DischargeCur*BattCap)

so i am thinking for 1ah battery (18000*1000)/(40*1000) = 450 (1C2H) nope that definately is not right!

ok so for standard 640mah battery (1800*640)/(40*640) = 45 (91H) nope thats not right either as its set to 28 (1CH) with the standard battery pack

what am i missing?

cheers
Andrew

[Dataman (Neil Parker)]

Hi Andrew,

Did you have a look at page 68 of the S4 manual, it covers these advanced settings in detail.

I dont know why you are seeing different default values for some of the parameters but if you reset your S4 by holding the reset button down for 30 seconds with the programmer turned off, and then reload the latest library you should be back to the correct default values, alternatively the defaults are shown in the S4 user manual on page 68.

The S4 user manual can be found here.

Hope this helps.

Best regards,

Neil Parker
Dataman Programmers

[Guest]

Hi Neil

yes the S4 manual link on page 68 has the same deafult settings that i have, hence thats why i cannot understand the text you found that says different

Default value for ChargeTime is 11 (0BH) resulting in 300mA, 50Hz
Default value for DischargeTime is 28 (1CH) which is internally
multiplied by 16 to get 450 resulting in 40mA current.

S4 manual and mine has the figures as Charge time 07H discharge time 11H, so my S4, and the online manual, and my paper copy of the manual all match

these figures dont match your text findings and hence is this why the maths that follow dont make any sense as could they be for some pre-production model?

the S4 manual does not go into detail on how to work these figures out , but the text you posted some time back does but doesnt make any sense to me

cheers
Andrew

[Dataman (Neil Parker)]

Hello Andrew,

The information and calculations provided above were generated by one of the engineers who used to work on the S4. If you believe that they are incorrect I will remove them, but unfortunatly I cannot provide any more information on this subject.

Regards,

Neil Parker
Dataman Programmers

[Guest]

According to what i read above, i've calculated these new values for my new batteries pack (3600mAh) at 50 Hz:

Charge Time

ChargeTime = (3600*640*50)/(50*300*3600)-1 = 1,13 so Charge Time = 1

Discharge Time

Discharge Time= (18000*640)/(40*3600) = 80, so S4Discharge Time = 80/16=5

Am I right ?

Is there damage risk for my S4 if these values are wrong ?

Thank's

martinat

[Dataman (Neil Parker)]

Hello martinat,

As mentioned above all the information I can give you relating to the advanced setup options for the S4 are covered in the S4 user manual on page 68.

I would not recommend using a higher capacity battery pack in the S4 as we have tested this here and were not able to achieve satisfactory results. The standard battery pack is rated at 8.4v, 850mAh and this is what the S4 was designed to charge and work with.


Regards,

Neil Parker
Dataman Programmers