9/22/2021 7:54 PM | |
Joined: 7/4/2017 Last visit: 8/4/2024 Posts: 18 Rating: (0) |
Hi mmkhan, hi all, I am trying to put back in function a Weiler UD 24 CNC, controlled by Siemens Sinumerik 820T. Regarding the axis control, the driver is a Siemens Simodrive 6SC 6101-3B-Z. For a few years, in a row, this CNC was not used, but before that it worked normally (at least this is what my client told me). So I started to put it back in function: change the NC battery, clear the NC, clear the PLC, download all the necessaries files for NC, download the Step5 PLC program and so on. In order to be able to move something, in manual mode, or to start the axis reference procedure I must follow the next steps: * switch on the main switch; *start the NC, by pressing a button; *enable the "power on" by pressing a button ("anpassteil EIN" from german); When I am trying to activate the "power on", I am getting the nc 1121 alarm "Stillstandsueberwachung".It can be reseted, but when I press again the "power on", it appears again. I had read about it and first I have checked the MD1121 parameter (also I checked if it is higher than "coarse stop tolerance range" and "fine stop tolerance range"). Before starting to check hardware things, do you think that I should check some other parameters, I am afraid that I have a parameter with a wrong value, or without any value. (I had a previous problem and the issue was a wrong parameter value). I want to meantion the fact that all R parameters values, from 1 to 19, (I didn't checked forward, tomorrow I will do that), all of them are 0. I am not sure that's ok. How did you solve your problem? Thank you in advance! ------------------------------------------------------------------------------------------ |
Last edited by: tseby0889 at: 09/22/2021 19:58:36Last edited by: Jen_Moderator at: 09/23/2021 09:40:35New subject after splitting |
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9/25/2021 1:53 PM | |
Joined: 1/19/2008 Last visit: 8/9/2024 Posts: 988 Rating: (63) |
HI, I'd start by checking the 0-10V command signal from the CNC to the 6SC61 drive. Pee |
9/30/2021 8:26 PM | |
Joined: 7/4/2017 Last visit: 8/4/2024 Posts: 18 Rating: (0) |
Hi Pee El Sea, First of all thanks for your sugestion! I measured the analog input for "Speed setpoint". For both axis, X and Z, the value is 0 VDC. If I pull out the wires for Z axis, after a few sec I get the same error but for the X axis. If I pull out the analog inputs, for both axis, I still get the error message but after a longer time (aprox 1-2 min.) I have read the 6SC61 datasheet and I also measured the test sockets for X axis and there is 0.35 VDC at "actual current value" and -0.35 VDC at "current setpoint". (during this measurements, I was making some other tests for the Z axis, please read below) For the Z axis, I tried to make the "start-up" sequence that is described at section 3.4 from the attached document, but when I briefly enable the terminal 65, the motor is moving (with 0.0 vdc for speed setpoint). I thought that the error make sense because the CNC was relocated and maybe the order of the motor phases is not OK, so I modified the main electrical cabinet power supply (I changed the order of the phases- in this way I thought that maybe I will solve the issue for both axis). Unfortunately, the error persist. I was in a hurry and I didn't change the L1, L2, L3 connection order, like it is described in the documentation, but Saturday I am planning to do this thing. Also I will check the motors cables and encoders cables. Beside this two things, do you think that I should check anything else? Do you have any other suggestion? Thanks a lot for your support! Attachment591_6SC61_Instruction_Manual.pdf (388 Downloads) |
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