#1  
Old 14-04-2014, 06:31 PM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,937
Paramount ME dec homing issue

Hopefully someone will know the answer to this problem.

First off, nothing has changed at all from a previous use, but like everything that I see a problem has arisen.

I go to home the mount and the RA homes fine but the dec moves in the reverse direction from the normal movement (dec moves anti clockwise)and hits the hard stop. I moved the mount to behind the home position for dec and it travels past that and heads down and around to the hard stop.

Anyone got any ideas?
Reply With Quote
  #2  
Old 14-04-2014, 07:37 PM
Bassnut's Avatar
Bassnut (Fred)
Narrowfield rules!

Bassnut is offline
 
Join Date: Nov 2006
Location: Torquay
Posts: 5,064
Assuming set up in software isnt corrupted (reload?), either the servo driver PCB is faulty (just driving regardless), or the dec home switch is crook.
Reply With Quote
  #3  
Old 14-04-2014, 07:55 PM
ericwbenson (Eric)
Registered User

ericwbenson is offline
 
Join Date: Sep 2009
Location: Adelaide, Australia
Posts: 209
Hi Paul,
I might of seen this before, IIRC the software/firmware settings got corrupted (never found out why) and I redid the southern hemisphere setup from the manual and it was ok.
But then it could be just that the home sensor is toast like Fred said...

EB
Reply With Quote
  #4  
Old 14-04-2014, 09:42 PM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,937
Thanks guys, unfortunately it looks like it is a hardware problem. I installed the skyX on the computer, I connected up the mount easily, set for southern hemisphere and went to home and it did the same thing. Maybe the homing sensor is fried.
Reply With Quote
  #5  
Old 15-04-2014, 05:47 AM
frolinmod's Avatar
frolinmod
Registered User

frolinmod is offline
 
Join Date: Dec 2010
Posts: 573
You could probably use some spare parts anyway, so you might as well order some.
Reply With Quote
  #6  
Old 15-04-2014, 09:14 AM
Joshua Bunn's Avatar
Joshua Bunn (Joshua)
Registered User

Joshua Bunn is offline
 
Join Date: Oct 2011
Location: Albany, Western Australia
Posts: 1,459
Could there be some grease on the sensor? You have just been through a pretty warm summer.
Reply With Quote
  #7  
Old 15-04-2014, 09:55 AM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,090
Paul,

Power up the mount and home it via a double-click on the joystick. It should slew to the north east.

If it doesn't I'd suspect hardware.

If it does , your software set-up is probably incorrect. (check observer lat/long/time/SH settings, then sync to a SH star )

Cheers
Peter
Reply With Quote
  #8  
Old 15-04-2014, 11:19 AM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,937
Tried that Pete, did the same thing. Must be hardware.

Joshua, I will take a look at the sensor but think it is fried. As grease on the sensor usually means the alarm would go off.

Ernie, ordered a sensor kit this morning. Might as well have a spare or two like you suggest.
Reply With Quote
  #9  
Old 01-05-2014, 08:16 PM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,937
Just a bit of an update.

SB recommended that I change over the homing sensor kit, so I bought one of those and it arrived yesterday. Today I drove down to the house and pulled the old one out and installed the new one. Which was a pretty easy job really. Took me a bit over an hour.

Turns out that the cable has been rubbing on the inside because I inadvertently cable tied a portion of it further down which in effect restricted the movement and caused the rubbing. That rubbing wore through the cable and severed it. Hence why it was not working.

Up shot is I know have my PME back in operation and homing as it should. Pretty happy with that.
Reply With Quote
  #10  
Old 01-05-2014, 09:18 PM
Joshua Bunn's Avatar
Joshua Bunn (Joshua)
Registered User

Joshua Bunn is offline
 
Join Date: Oct 2011
Location: Albany, Western Australia
Posts: 1,459
good to hear Paul, bet your chuffed.
Reply With Quote
  #11  
Old 01-05-2014, 09:57 PM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,937
Quote:
Originally Posted by Joshua Bunn View Post
good to hear Paul, bet your chuffed.
Yep, its nice to have my PME back.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 06:43 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement