On Dec 26, 2020, at 8:01 PM, Roland Christen via groups.io <chris1011@...> wrote:



It sounds like you are hitting the internal hard limit. You probably have the scope mounted at 90 degrees from the arrow on the top of the Dec mounting plate. Remove your scope and dovetail and look at the mounting plate. You will se a long arrow. This is the direction that your scope must point. You cannot mount it at 90 degrees or you simply run out of Dec motion when pointing south and the axis will hit the hard stop and the motors will stall with yellow light coming on.

Can you post a picture showing the scope pointing at the north pole?

Roland Christen

Astro-Physics Inc.

-----Original Message-----
From: Luca Marinelli <photo@...>
To: main@ap-gto.groups.io
Sent: Sat, Dec 26, 2020 6:16 pm
Subject: [ap-gto] DEC Motor stalls on new Mach2GTO

Today I replaced the Mach1 in the observatory with the new Mach2 I received a few days ago. I have a Tak FSQ106 mounted on the Mach2 and it balanced without any problems. I tested a slew and everything worked fine. I then started to set up the Meridian limit in APCC Pro and after sending the scope to the Southern horizon (-15 degrees DEC) I started experiencing motor stalls. The mount makes a whirring/grinding noise when trying to slew in DEC and APCC communication window shows motor stall condition. The light on the CP5 turns amber. I measured the voltage out of the power supply and it is correct (24.94V). I also replaced the power supply with the power supply i used with the Mach1 and the same thing happened. To test the motor cable, I swapped DEC and RA cables and the fault was still on the DEC axis. I removed the telescope and tried slewing the empty mount in DEC, to no avail (motor stalls). 

APCC Pro version: 1.8.8.11
CP5 firmware: VCP5-P02-08
Encoder version: A02-08

Is there anything obvious I am missing?

thanks,

Luca
 

--
Roland Christen
Astro-Physics

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of John
Sent: Saturday, December 26, 2020 3:55 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Initial GoTo In APCC Pro Cause Nose or Tail Dive

Aloha Ray,

I just sent you the screen shots via email.

Once I slew more than 10 degrees (in either direction), stop the slew, the DEC reads 00 00 00. While slewing and
holding down the left
mouse button, I can see the DEC coordinates actually slewing/changing. But after stopping the slew, the DEC
coordinates revert to 00 00 00
Kind of strange...

After pressing the 'find home' button, the DEC displays the coordinates correctly (after the slew stops) and like what
you're seeing in your screen shot
Hope the screen shots help, thanks!

John

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of John
Sent: Saturday, December 26, 2020 2:42 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] Initial GoTo In APCC Pro Cause Nose or Tail Dive

Aloha Ray,

ok, I'll get some screen shots sent over to you. I'll just put them all in a MS Word doc.

I was connecting to it again today, but it's still doing the same thing. The only thing new (that I noticed) was that the
DEC
coordinates displayed correctly whenever the dec was within 10 degrees of Park 3. In other words, once you slew
more than
10 degree in DEC, release the mouse button, then the dec readout indicates 00 00 00.

I was looking in the APCC PRO user guide to see if I could initialize the mount again (after sending it home), but they
may not be an option

Thanks!

John

Merry Christmas Tony 🎄

Hope Santa 🎅🏻 was good to Charlie and Moose!

Pete

On Dec 25, 2020, at 6:00 AM, Harley Davidson <astrocnc@...> wrote:



<bmjlgbiiionlkfmi.jpeg>