Hello!! New guy with Fanuc questions

[FanFan]

Hello everyone. I just signed up today. The past few days I have googling google for Fanuc info. I stumbled upon this site many times.

I used to work on Machine controls and CNC machines about ten years ago. Things have changed and I have forgotten a fair amout of info.

I have been working on a small Grinder with a Fanuc OM control on it. I am looking for things but don't seem to be able to find them.

1. I am looking for a display of the X and Y's. Input and outputs. I have a Diagn/parameter key but that is not getting me anywhere.

2. I am looking for the ladder diagram. Can't find that. Maybe it is hidden?

3. Looking for an explanation of the TG led on the servo amp unit. I found something somewhere. It suggested a lost connection issue. I cleaned the connections at the red cap motor. No help.

4. On my grinder I am getting a Fault 2004 "work head failure fault." I was wondering if there is a way to look at what actual conditions causing that fault to come up. I don't thing this is a Fanuc fault but rather a OEM fault. What documentation that I have does not give a list of machine fault. I was getting a Fault 2007 "main lube system failure." I filled up the lube tank and cycled the manual lube cycle button several times and that fault cleared.

5. I used to work on Fanuc 6, 11, 15,16 controls. I remember having access to those things that I am looking for in #1-4. On the OM control I don't seem to have them.

I am not sure if I am dating myself but I am use to one drive -one motor. I am surprised at the one drive- two motor setup ( as far as Fanuc's) . I don't remember having that in the old days.

One more thing. The motor that I am having problem with is being used as a small spindle. That means that there is no postion feedback . The encoder on the back of the moter is being used as tach for motor control or is it being used as a spindle speed indication? BTW the spindle speeds are program but are not easy to see on the CRT.

Sorry a bit long winded but wanted to give all the facts that I know. I appreciate any feedback. I have already rejog my memory reading many of the fanuc post here. a lot of good info can be had.

FanFan

[Al_The_Man]

What is the version of the 0? Older one cannot display the ladder, later ones the ladder can be turned on by parameter.
Al.

[FanFan]

Al, Thanks for the fast reply. I took another look at the control. It is a Fanuc O-GC control not a Fanuc OM control. Sorry about the misinformation. The version . I am not sure. I looked at the paperwork that the machine came with but did not have that information. I did cycle power only once today. I did not catch the numbers that came up intially on power up. Is that where I am going to find the version number? Or is the O-GC and OM letters that give the version info? I will cyle power tommorrow and catch those number that come up intially on power up. I was trying to check the motor and encoder connections today. Between working with prints in German and the Fanuc manual which is not exactly the correct one is making the job is a little more difficult. That TG led fault is not in any of my manuals. There is talk about TGAL alarm parameters but not the TB led's. I was trying to trace the encoding wiring from the encoder to CN 5 connector on the servo drive. Having some fun getting pins numbers and letters to match up. Thanks again for your help.
FanFan

[Al_The_Man]

If it is a series C you may be able to turn the ladder on, check parameter #60 bit 2, that is the 3rd bit from the right.
If it is 0 set it to 1.
Al.

[FanFan]

Al, I take a look at Parameter 60 when I get to work. Thanks for the info.

FanFan

[FanFan]

Hello. First I would like to say Thank you for all the responses/ assistance public and privately. I greatly appreciate it.

I have been working on my problem off and on for a while. It has been frustrating and a bit of a stumper for me. I tried to shotgun the problem with a new motor and encoder assembly. I also had the mech separated the motor from the spindle work head assembly. I then checked the motor and encoder connection back to the servo drive. Those ideas did not work. Didn't find any issues. The ready lite on drive would come on. I asked the motor to turn and the drive would fault out with a TG fault imediately. What was going on? It was becoming a stumper to me.
But with the infomation that I received from you guys I was able to move forward. The TG fault was a red herring of sorts. Or maybe it wasn't. I started to recheck what I had. Found some poor input 3 phrase connection problems on one of the phases. It turned out that phase to phase seemed ok but when I checked each phase to ground the readings were bad. Also I was getting a German power contactor tripping sometimes. I hadn't realized that it is was part of my drive circuit. That was mostly my fault and I shouldn't try to blame the poorly drawn German prints and poor documentation. I was fooled once , hopefully not again. Ten years ago I was a bit better getting around German prints. I guess I am a bit rusty.
Tighten all connections. Tried the motor out. It work good without the drive faulting out. Had the mech put everything back together and tried the machine and everything looks good to go. Thanks again and thanks for ready about my little adventure with a O-G Fanuc control assembly. FanFan

[Al_The_Man]

Originally Posted by FanFan That was mostly my fault and I shouldn't try to blame the poorly drawn German prints and poor documentation. I was fooled once , hopefully not again. Ten years ago I was a bit better getting around German prints. I guess I am a bit rusty.

The logic symbology is a bit different to N.A. style symbols, also logic diagrams are different such as ladder style in N.A. is drawn down the page and left to right, whereas Europe style is across the page and progress vertically down for logic path.

[FanFan]

Al, Thanks for the info. At one time I think I had a handout of the European symbols used for electrical devices used on their prints. What you said also jogged my memory. Some of the electrical prints , whether they are N.A.'s or European's will have a chart somewhere explaining the symbols used. Unfortunately my machine did not. Have a great weekend. FanFan