[TowerTalk] SteppIR cable

[Jerry Keller]

We thought of that also.... the wires were switched around to see if the 
"4th EHU" was any particular EHU... but no matter which EHU was asdded last, 
it had the same result.  So the problem isn't specific to any particular 
EHU.
73, Jerry K3BZ
----- Original Message ----- 
From: "Perry - K4PWO" <k4pwo at comcast.net>
To: <towertalk at contesting.com>
Sent: Sunday, June 10, 2007 9:48 PM
Subject: Re: [TowerTalk] SteppIR cable


> The longer cable, due to its resistance, would act as a current limiter
> preventing power supply fold-back.
>
> Have you confirmed that the power supply is really shutting down?  The
> description almost sounds like a "slow" stepper problem.  Can't say for 
> sure
> as I don't know what is in the controller "code" but this sounds a lot 
> like
> a PID loop failure that causes the controller to fault.  You may have a
> binding #4 motor that will operate alone but when any other motor is in
> play, and motor 4 can't get the full share of current, its slow response
> causes the fault.
>
> Just an idea as I saw something like this from a company that "outsourced"
> its controllers and wasn't even aware of the "features" programmed into 
> the
> microcontroller.
>
> 73 de Perry - K4PWO
>
> ----- Original Message ----- 
> From: "Ron Todd" <ron at k4wz.com>
> To: <towertalk at contesting.com>
> Sent: Sunday, June 10, 2007 8:06 PM
> Subject: [TowerTalk] SteppIR cable
>
>
>> Several mentions were made that it was related to the 500 feet of control
>> cable, but SteppIR's engineers say the longer cable would actually help
>> reduce the load, so cable length has been ruled out.
>>
>> I dont know how the longer cable would help.
>> I would look at the size of the cable. SteppIR makes two size, one for
>> short runs and one for long runs.
>>
>> GL  K4WZ   Ron
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