[TowerTalk] Alfa spid and Green Heron controller

[john at kk9a.com]

3 and 4 are also used for pulse sense on prop pitch rotators. It should be
easy to see of voltage is going to the motor. Of course the controller needs
to be set to rotator that you're using.  There is a menu option and also I
believe some internal jumpers.

John KK9A



From:	Don Moman VE6JY 
Date:	Sun, 23 Sep 2018 20:42:16 +0000

Hi Phil:


*The manual I have for the controller states that rotor terminals 1 and 2 *

*are for Motor CW and CCW and the  Ground and Positive are on
rotor terminals 3 and 4.*

 3 and 4  are sense wires and they have a low voltage for the logic to
sense a high or low state
as the reed switch opens and closes.

The manual for the rotor states that rotor terminals 1 and 2 are for
motor drive and that 3 and 4 are for impulse sense.

Of this I can assure you that they are as stated.
Polarity isn't critical and it would be very hard to do any damage with
normal 12 to 24 vdc applied to any combination.

There is a troubleshooting section in the manual that verifies that the
reed switch is operational... put 12v on pins 1 and 2 to turn the motor
while hooking an ohmmeter on pins 3 and 4. It should vary between open and
about 1 k ohms.

73 Don
VE6JY

> On 9/23/2018 1:34 PM, Phil Snyder wrote:
> > Howdy TTers
> >
> > I am currently trying to hook my new Alfa Spid RAK rotor to my Green
> > Heron RT21 controller.
> >
> > The manual I have for the controller states that rotor terminals 1 and
> > 2 are for Motor CW and CCW and the  Ground and Positive are on rotor
> > terminals 3 and 4.
> >
> > The manual for the rotor states that rotor terminals 1 and 2 are for
> > motor drive and that 3 and 4 are for impulse sense.
> >
> > I hooked it up according to the rotor directions and to the controller
> > since it had been on an Alfa Spid already and it does not turn the
> > rotor. I get a "No Motion" error on the control box. At this point I
> > am hesitant to switch the wires around until I get some confirmation
> > as to what is and isn't correct ( I don't want to fry anything!)
> >
> >
> > Thanks
> >
> > Phil
> >
> > N9LAH