Hi Everyone.

My name is Cezary. Got cnc mill run by Siemens 802D. LT-modul  6SN11 type. Can not remember now software version. Also can not tell if PCU50 or TCU is used and which HMI software version has been installed. Do not know how to find answers at the moment. I'm an operator and trying to troubleshoot the machine. It  trips  out servo and display initially error for x axis fault (25something, will provide detail if necessary, it is displayed only for half a second) then shows 300800 error and code 607, which stays on the screen till reset.  It does it when working or if left idling. It may take an hour or half in both cases. Once happened if You reset and switch the servo back on You can move z and y but touch the x button and it's gone again. What is interesting that I got to idea disconnect the power cable to x axis motor and switch machine on, servo on and leave it idling without taking it to reference point. First time after servo on it immediately came with same error but after switching servo on again it stayed ready to go to reference point. Left idling and the same error came after some maybe half or one hour , maybe more. When assigned to go to ref. point with x axis power cable disconnected it obviously through exactly same error when it come time to move x axis.

 Power cable, orange one has been replaced with new including new plug. Lt-module and memory card had been sent off to specialist to test for the period of 2hrs (so they say) on the rig and proved to be working faultlessly. Connector plugs to the profibus (purple cable) been replaced with new. 607 code mainly refer to motor being not connected or phase is missing.  But I do not know what they mean by the following:

1. check the motor contactor, - where or what is contactor?

2. DC link voltage present, - where and how to measure it, what voltage to expect,

3. Check the DC link busbar, - where to look for it?

4. and exactly taken from the help system screen: "Uce (they mean Use, I guess) monitoring function in the power section has responded (sentence bit out of sense?) (RESET by powering off/powering on)

5. Replace the power section or control module, - Is power section referred to motor and control module to LT-module?

  I'm going to look closely to socket/connector on the motor side. It's 90 degree angled and could not open it after undoing from motor but will try harder. Also thinking about swapping motors between x and y axis. Are there any special thing to be aware when doing so?

Any help much appreciated.

Thank You.

You cannot remember many important information. How can other people help you?

Did you read my tips for new users here, If you post at least one picture for you system--most people here will know what is your system and what is the trouble

Hi.  Photos coming. One by one.

Thank You.

It's a Sinumeric 802d, year of the machine 2004, but will have to power on machine to tell software version.

 Looks for me that to get the back of the motor open in order to check if phase cables are intact will have to remove that round encoders block and wonder if those two torx bolts located at 2pm and 8pm let me do it.

Regards

Cezary 

 STOP!! don't touch motor encoder! or no one can help you, you need send your motor to repair shop.

also Siemens motor almost not defective, unless you put it into the water or oil for 3 years.

other information all good, take picture of HMI--802D using PCU--Panel Control Unit, even i did not see your HMI and PCU, from your drive--I know they are 611UE--it seems a 3 axis milling M/C,

X,Y,Z and spindle

you 1st post is so long--can you post here with picture 802D HMI, what is your m/c issue

urval

It's a Sinumeric 802d, year of the machine 2004, but will have to power on machine to tell software version.

 Looks for me that to get the back of the motor open in order to check if phase cables are intact will have to remove that round encoders block and wonder if those two torx bolts located at 2pm and 8pm let me do it.

Regards

Cezary 

Hi.

 Here is a photo of HMI. It is Sinumerik 802d - version 802d SW 02.01.05. Machine itself it's XYZ 560 Mini Mill. Tried to swap the motors but can not remove it of the seat (four bolts removed and motor loose) easy way ( I guess without undoing some of this joint/clutch bolts) and was advice to not to rotate the screw when doing so. Can obviously call XYZ service but was wondering if anyone in UK would recommend to call straight to Siemens in order to diagnose the problem.  Have they got some engineers to come around?

 Still thinking to go back to LT-module and possibly get some spare one to see if it sorts the problem.

Any help and/or suggestions appreciated.

Cezary

Hi everyone,

It has been like two years since got it sorted but need some help again so needed to log in and meanwhile can share the final outcome of above presented issue. After all the research and work I could do myself I had to call cnc engineer  and pay for fault finding which turned out to be ... faulty lt module, the same I sent to some, apparently shitty, service for testing. I'm guessing they did not really tested it dynamically under load and fault did not reoccurred under static condition. Got replacement, plugged it in and all works perfectly.

Thanks to Nulizhang and all who had help me.

Regards

Cezary