[TowerTalk] Why time delay on UST MDPL?

[Roger (K8RI)]

Rick Karlquist wrote:
> Tod -ID wrote:
>   
>>  Rick:
>>
>> Isn't the time delay pluggable? There is too much snow between me and the
>> tower base to want to check personally, but I would certainly hope it is
>> easy to change if needed.
>>     
>
> Yes, it is pluggable.  It will be interesting to see how
> "responsive" UST is if I try to order a replacement relay :-)
>   
It's likely a standard P&B or other regular relay that should be widely 
available.

73

Roger (K8RI)
>   
>> I had assumed that the time delay was to let any 'wind down' of the
>> winch/motor assembly to happen before the motor tries to move things in a
>> different direction. Although the rate at which everything is moving seems
>> pretty slow I suppose there is something in the system with just enough
>> inertia to put a serious load on the motor when it is trying to run in a
>> different direction.
>>
>> To me the fact that your motor stalls when you change direction is indeed
>> a
>> 'clue'. One should allow things to stop moving before changing directions
>> is
>>     
>
> I can understand a situation where the motor is still moving in
> one direction and you try to go the other direction.  But what
> I am seeing is that the motor has stopped moving and I am merely
> trying to start up again in original direction (IE, going up, stop,
> then going up again).  The time delay evidentally prevents the
> motor from stalling in this case, but I don't understand why it
> would stall in the first place.
>
> I'll plan on replacing the relay if diddling the time delay adjustment
> pot does not bring it back.
>
> Rick N6RK
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>