Go to Post We make ourselves better by lifting others and standing on their shoulders, not by knocking them down. - Taylor [more]
Home
Go Back   Chief Delphi > Technical > Electrical
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
 
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 08-02-2008, 09:17
merybar's Avatar
merybar merybar is offline
Registered User
AKA: Matt
FRC #0894 (Chargers Robotics)
Team Role: Leadership
 
Join Date: Feb 2007
Rookie Year: 2002
Location: Michigan
Posts: 156
merybar is a glorious beacon of lightmerybar is a glorious beacon of lightmerybar is a glorious beacon of lightmerybar is a glorious beacon of lightmerybar is a glorious beacon of light
Send a message via AIM to merybar
VICTOR ISSUES

Our victors have been suddenly stopped working in the sense of the PWM or digital part of them. They still have power but occasionally one stops working. We have lost 3 over the last few week. Can anybody help? Thanks!!!!
Matt
  #2   Spotlight this post!  
Unread 08-02-2008, 09:24
Miner Miner is offline
Registered User
AKA: Jacob Miner
FRC #2077 (Laser Robotics)
Team Role: Leadership
 
Join Date: Feb 2008
Rookie Year: 2007
Location: Dousman, WI
Posts: 85
Miner is on a distinguished road
Re: VICTOR ISSUES

Check and make sure that all of the screws in the Victors are all the same and the original ones that came with the victors. Smaller screws will short out your victors.

The power from the Maxi block should go into the V+ and V- ends. The motors should be connected to the M+ and M-. Make sure they are connected correctly.

Good luck,
Jacob
__________________
Do what you like... Like what you do!
Jake, the Life Is Good guy

Last edited by Miner : 08-02-2008 at 16:16. Reason: Victor connections backwards.
  #3   Spotlight this post!  
Unread 08-02-2008, 09:59
DaveF DaveF is offline
Registered User
no team
 
Join Date: May 2007
Location: New Windsor, MD
Posts: 11
DaveF has a spectacular aura aboutDaveF has a spectacular aura aboutDaveF has a spectacular aura about
Re: VICTOR ISSUES

Jacob,

Your post had me doubting myself, so I went and checked. The +12 V connection goes to the fuse block. The gnd terminal of the Victor goes to your common ground on the Rockwell Block. The +M and -M terminals connect to the motor, not the the Maxi Block.

Not sure what would happen if you connected a Victor backwards, but it certainly would not pass inspection if it lasted that long.
  #4   Spotlight this post!  
Unread 08-02-2008, 10:07
Alan Anderson's Avatar
Alan Anderson Alan Anderson is offline
Software Architect
FRC #0045 (TechnoKats)
Team Role: Mentor
 
Join Date: Feb 2004
Rookie Year: 2004
Location: Kokomo, Indiana
Posts: 9,113
Alan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond reputeAlan Anderson has a reputation beyond repute
Re: VICTOR ISSUES

What does the LED show when the Victor "stops working"? If it's blinking yellow, it means it's not recognizing a pwm signal. One trivial cause of that problem is the pwm cable not being plugged in fully.
  #5   Spotlight this post!  
Unread 08-02-2008, 10:26
Mr. Lim Mr. Lim is offline
Registered User
AKA: Mr. Lim
no team
Team Role: Leadership
 
Join Date: Jan 2004
Rookie Year: 1998
Location: Toronto, Ontario
Posts: 1,125
Mr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond reputeMr. Lim has a reputation beyond repute
Re: VICTOR ISSUES

Quote:
Originally Posted by Alan Anderson View Post
What does the LED show when the Victor "stops working"? If it's blinking yellow, it means it's not recognizing a pwm signal. One trivial cause of that problem is the pwm cable not being plugged in fully.
Quoted for truth!

No matter how hard we try, at least a few times every year, a few of our PWM cables don't get plugged into the Victors properly.

Pull out the PWM cables from any Victors that do nothing but blink orange. Check to see if the pins are bent. Some people don't even notice, but often all the pins are bent in the same direction slightly. That means you missed!

Straighten them out and try again! PWMs should take very little force to insert. If you feel resistance halfway while inserting them, you've missed!

Try again...

then try again...

and then again =)
  #6   Spotlight this post!  
Unread 08-02-2008, 13:24
Richard McClellan's Avatar
Richard McClellan Richard McClellan is offline
Engineering Mentor
FRC #0254 (Cheesy Poofs)
Team Role: Mentor
 
Join Date: May 2004
Rookie Year: 2004
Location: Palo Alto, CA
Posts: 322
Richard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud ofRichard McClellan has much to be proud of
Send a message via AIM to Richard McClellan
Re: VICTOR ISSUES

Quote:
Originally Posted by DaveF View Post
Jacob,

Your post had me doubting myself, so I went and checked. The +12 V connection goes to the fuse block. The gnd terminal of the Victor goes to your common ground on the Rockwell Block. The +M and -M terminals connect to the motor, not the the Maxi Block.

Not sure what would happen if you connected a Victor backwards, but it certainly would not pass inspection if it lasted that long.
DO NOT connect the M+ and M- terminals to the terminal block, or any power source. The "M" means they connect to motors.

Quote:
Originally Posted by Miner View Post
Check and make sure that all of the screws in the Victors are all the same and the original ones that came with the victors. Smaller screws will short out your victors.

The power from the Maxi block should go into the M+ and M- ends. The motors should be connected to the V+ and V-. Make sure they are connected correctly.

Good luck,
Jacob
Wiring a Victor backwards is probably the easiest way to burn out a Victor. Do not attempt this.
__________________
~ Richard McClellan ~
Former Student on 1477 | Northside Roboteers | 2004-2005
Former Lead Mentor for 2158 | ausTIN CANs | 2007-2010
Current Mentor for 254 | Cheesy Poofs | 2013
  #7   Spotlight this post!  
Unread 08-02-2008, 16:18
Miner Miner is offline
Registered User
AKA: Jacob Miner
FRC #2077 (Laser Robotics)
Team Role: Leadership
 
Join Date: Feb 2008
Rookie Year: 2007
Location: Dousman, WI
Posts: 85
Miner is on a distinguished road
Re: VICTOR ISSUES

Quote:
DO NOT connect the M+ and M- terminals to the terminal block, or any power source. The "M" means they connect to motors.
I have corrected my post on this thread. I am extremely sorry for the mistake. Thank you for noticing.

Jacob
__________________
Do what you like... Like what you do!
Jake, the Life Is Good guy
  #8   Spotlight this post!  
Unread 11-02-2008, 14:14
Tom Line's Avatar
Tom Line Tom Line is offline
Raptors can't turn doorknobs.
FRC #1718 (The Fighting Pi)
Team Role: Mentor
 
Join Date: Jan 2007
Rookie Year: 1999
Location: Armada, Michigan
Posts: 2,521
Tom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond reputeTom Line has a reputation beyond repute
Re: VICTOR ISSUES

Quote:
Originally Posted by SlimBoJones View Post
Quoted for truth!

No matter how hard we try, at least a few times every year, a few of our PWM cables don't get plugged into the Victors properly.

Pull out the PWM cables from any Victors that do nothing but blink orange. Check to see if the pins are bent. Some people don't even notice, but often all the pins are bent in the same direction slightly. That means you missed!

Straighten them out and try again! PWMs should take very little force to insert. If you feel resistance halfway while inserting them, you've missed!

Try again...

then try again...

and then again =)
An easy solution to this problem is to put a dot of hot glue on the pwm once you get it in and reading correctly. It peels off instantly if you need to take it out, but in the mean time you don't have to deal with vibration shaking your PWM's loose.
  #9   Spotlight this post!  
Unread 11-02-2008, 15:16
Team 135 Team 135 is offline
Registered User
FRC #0135 (Penn Robotics)
 
Join Date: Jan 2008
Rookie Year: 1998
Location: Mishawaka, Indiana
Posts: 139
Team 135 will become famous soon enough
Re: VICTOR ISSUES

one thing that we have started doing with out PWM wires that go to everything is to shave down some of the plastic on the end that plugs into the Victors. This allows for less friction and more exposure of the terminals.
  #10   Spotlight this post!  
Unread 11-02-2008, 16:24
TubaMorg TubaMorg is offline
Programmermechanicalelect ricalcoach
AKA: Dan
FRC #1480 (Robatos Locos)
Team Role: Mentor
 
Join Date: Jan 2006
Rookie Year: 2005
Location: Houston
Posts: 450
TubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond reputeTubaMorg has a reputation beyond repute
Re: VICTOR ISSUES

We use a fine Dremel bit and very carefully remove the "anti-pwm plug nub" that runs along the inside of the Victor socket. Vacuum it out then hot glue the cable into place.
  #11   Spotlight this post!  
Unread 11-02-2008, 20:32
bman's Avatar
bman bman is offline
Registered User
FRC #0548
 
Join Date: Jan 2008
Location: Motown
Posts: 20
bman is an unknown quantity at this point
Re: VICTOR ISSUES

You guys are lucky that your victors are just not working, two of ours blew up!
  #12   Spotlight this post!  
Unread 11-02-2008, 22:01
longrange longrange is offline
Registered User
FRC #1070 (Royal Robotrons)
Team Role: Mentor
 
Join Date: Jan 2008
Rookie Year: 2006
Location: Woodland Hills, CA
Posts: 21
longrange is an unknown quantity at this point
Re: VICTOR ISSUES

Always cover the victors when cutting/filing the robot. We always seam to destroy some with metal chips at regonals when modifying the robot.
  #13   Spotlight this post!  
Unread 15-02-2008, 18:47
RyanN's Avatar
RyanN RyanN is offline
RyanN
AKA: Ryan Nazaretian
FRC #4901 (Garnet Squadron)
Team Role: Mentor
 
Join Date: Jun 2006
Rookie Year: 2005
Location: Columbia, SC
Posts: 1,126
RyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond reputeRyanN has a reputation beyond repute
Re: VICTOR ISSUES

I think we had the same issue with one of our Victors. We had it connected to a FP motor, and it was working fine for 3 weeks, and then, one day while driving, it decided to stop working. The LED would just blink as if it had no signal. I verified the PWM cable was fully seated and that it was getting a signal, and later replaced it with an old 884 Victor from a previous year. I thought it was strange that it just went out. No magic smoke, it was not overheating, no drill shavings, it just lost the signal.
__________________
Garnet Squadron
FRC 4901
Controls Mentor
@rnazaretian

Previous mentor and student from Team Fusion, FRC 364
Closed Thread


Thread Tools
Display Modes 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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Victor 884 Issues BHS Bucs Electrical 3 01-02-2008 15:10
Programming Issues etdeshon Programming 5 21-01-2008 17:59
Issues with non working victor constant orange led dani190 Control System 10 21-12-2007 22:32
Victor 884 Brake/Coast Issues sciguy125 Control System 23 23-01-2005 14:46
Victor 884's not behaving the same as Victor 883's programmer1 Programming 13 10-03-2004 21:51


All times are GMT -5. The time now is 12:43.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi