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Discussion Starter · #1 ·
Hello,

I'm looking for help to identify the manufacturer and type of this AC motor
controller:
http://666kb.com/i/bmj9jgotflrarrq8u.jpg

This is the controller used in the Tazzari Zero
(http://www.tazzari-zero.com) but Tazzari has ripped and grinded off all
original labels.
I know that it almost looks like a Curtis 1234, but not exactly and also the
1234 is not available for a 84V system like its used in the Zero.

Thanks in advance,
Jens
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Discussion Starter · #2 ·
Doesn't look anything like a curtis, connector is in the wrong place, and
connections for power aren't in the right place.


One thing to note though, the 1234 goes to 84V (high voltage cutoff is 108V)

Jens Schacherl <[email protected]> wrote:

>
> Hello,
>
> I'm looking for help to identify the manufacturer and type of this AC motor
> controller:
> http://666kb.com/i/bmj9jgotflrarrq8u.jpg
>
> This is the controller used in the Tazzari Zero
> (http://www.tazzari-zero.com) but Tazzari has ripped and grinded off all
> original labels.
> I know that it almost looks like a Curtis 1234, but not exactly and also
> the
> 1234 is not available for a 84V system like its used in the Zero.
>
> Thanks in advance,
> Jens
> --
> View this message in context:
> http://electric-vehicle-discussion-list.413529.n4.nabble.com/AC-controller-identification-tp2533695p2533695.html
> Sent from the Electric Vehicle Discussion List mailing list archive at
> Nabble.com.
>
> _______________________________________________
> | REPLYING: address your message to [email protected] only.
> | Multiple-address or CCed messages may be rejected.
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Discussion Starter · #3 ·
It looks a bit like a Zapi, but again not exactly.

Jens Schacherl <[email protected]> wrote:
>
> Hello,
>
> I'm looking for help to identify the manufacturer and type of this AC motor
> controller:
> http://666kb.com/i/bmj9jgotflrarrq8u.jpg
>
> This is the controller used in the Tazzari Zero
> (http://www.tazzari-zero.com) but Tazzari has ripped and grinded off all
> original labels.
> I know that it almost looks like a Curtis 1234, but not exactly and also the
> 1234 is not available for a 84V system like its used in the Zero.
>
> Thanks in advance,
> Jens
> --
> View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/AC-controller-identification-tp2533695p2533695.html
> Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com.
>
> _______________________________________________
> | REPLYING: address your message to [email protected] only.
> | Multiple-address or CCed messages may be rejected.
> | UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> | OTHER HELP: http://evdl.org/help/
> | OPTIONS: http://lists.sjsu.edu/mailman/listinfo/ev
>

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Discussion Starter · #4 ·
Thank you all for your answers.
Most likely it's really a Zapi AC3 with a special case, I have seen the
specs "80V/450A" that are handwritten on the label in the picture exactly in
one AC3 datasheet I found.

The Tazzari also allows to user to switch between four different drive modes
(Rain/Eco/Normal/Sport), and the AC3 features "10 different sets of
parameters". They must be changeable while driving then, probably over the
CAN bus.

Problem is that with current Zeros, there is no real gap between
acceleration and recuperation on the power pedal, so you can't coast. I
think Tazzari will change this soon, but dealers have no possibility yet to
optimize existing cars.

Regards,
Jens
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Discussion Starter · #5 ·
Jens Schacherl <[email protected]> wrote:
>
> Thank you all for your answers.
> Most likely it's really a Zapi AC3 with a special case, I have seen the
> specs "80V/450A" that are handwritten on the label in the picture exactly in
> one AC3 datasheet I found.
>
> The Tazzari also allows to user to switch between four different drive modes
> (Rain/Eco/Normal/Sport), and the AC3 features "10 different sets of
> parameters". They must be changeable while driving then, probably over the
> CAN bus.

The "mode" will simply be a maximum current limit. I think it's
settable with switch inputs.

> Problem is that with current Zeros, there is no real gap between
> acceleration and recuperation on the power pedal, so you can't coast. I
> think Tazzari will change this soon, but dealers have no possibility yet to
> optimize existing cars.

This is a feature of the inverter, Tazzari can't change it unless Zapi
do! Forklift controllers like this use the pedal input to control
speed, not power (or torque). This is OK for low speed vehicles.

Without regen (as in the case for series wound motors and controllers)
the behaviour is noticeably different from a traditional ICE car, but
you can live with it.

With regen, as you notice, it's definitely inconvenient for road use
and takes some concentration to drive smoothly.

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Discussion Starter · #6 ·
On Tue, Sep 14, 2010 at 8:46 PM, Jens Schacherl <[email protected]>
wrote:
> Problem is that with current Zeros, there is no real gap between
> acceleration and recuperation on the power pedal, so you can't coast. I
> think Tazzari will change this soon, but dealers have no possibility yet
> to
> optimize existing cars.

This is a feature of the inverter, Tazzari can't change it unless Zapi
do! Forklift controllers like this use the pedal input to control
speed, not power (or torque). This is OK for low speed vehicles.

But isn't it possible to influence this behaviour with the Windows
programming software kit?
I think it can do more than the handheld programmer, but I haven't found any
freely avaible documentation about the programming possibilities of the Zapi
controllers on the web.

Regards,
Jens
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