3/12/2015 12:24 PM | |
Posts: 6 Rating: (0) |
Thank you for your reaction! That parameter list is helpful! I have two questions at the moment: - How can I stop and start the motor? Is there a function block for this, or do I have to set a parameter? - I know how to make a certain transfer function between input and output, but how can I make a sequence of steps with these function blocks ( first step1, then step2, than step3 until din4=low, etc)? BTW: The blocks which contains no information about the led means that the led is off (it is a 'busy' light). Thanks again! Regards Hendrik |
3/12/2015 3:39 PM | |
Joined: 5/28/2008 Last visit: 10/4/2024 Posts: 4515 Rating: (839)
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Hello, In my opinion, you need to buy a PLC and connect all inputs to PLC and then connhect outputs to drive. Make programming inside PLC. It will be very easy. You do not need a very expensive PLC, Logo! PLC can do the job for you. Hope this helps. |
Ayman Elotaify |
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3/12/2015 7:16 PM | |
Joined: 6/4/2008 Last visit: 10/4/2024 Posts: 1497 Rating: (324)
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Hi, the "blocks" I treated as sequential logic based on the conditions of the inputs - I sketched a timing diagram, do you need to see it? The drive is already switched on via these parameters, you should not need to do anything else. By sorting out the rest of the drive I meant things like motor data, encoder (if used), speed setpoints, ramps etc There is a bit of tweaking required to sort out the LED status, but that is really minor if the sequence works methinks. Let me know if it works ok? Agree with Ayman however. Regards, Graeme p.s. I added a reset to Digital Input 7, but if you intend to use the BOP/AOP for this then no problem.
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Last edited by: Graeme at: 3/12/2015 7:20:32 PM |
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3/12/2015 7:39 PM | |
Posts: 6 Rating: (0) |
OMG, I did not notice that you already solved my problem. I thought that you gave a list of useable parameters. I will program the MM440 as soon as possible, and I will keep you up to date. Can you send me also the timing diagram? I would like to understand the program, to be able to solve minor issues lateron. Thanks! Regards Hendrik |
3/12/2015 9:34 PM | |
Joined: 6/4/2008 Last visit: 10/4/2024 Posts: 1497 Rating: (324)
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See attached for the Timing sheet I did, this is sequential as opposed to block based if that makes any sense. The breaks in the lines indicate 'x' amount of time. The LED status can be solved using two XOR blocks (Only because all the OR's are already used) Regards, Graeme AttachmentTiming.pdf (747 Downloads) |
3/16/2015 11:08 PM | |
Posts: 6 Rating: (0) |
Today I had some time to implement the settings into the Micromaster. There are two settings which are not possible according to the MM440: p2103 and p2820. The error which is shown is: cannot be executed because of the operation mode. I changed the operation mode a few times but the setting is still rejected... I also converted the settings to (and, or, xor) - ports. Now I understand a bit About how to program a MM440. Another interesting point is that the motor never starts. When I make p2841 high, the motor doesn't start. Is it right that this should be the case? Is there something wrong with the commissioning data? I commissioned the controls to the terminals and the frequency to fixed frequency. Thanks again for the answers and best regards, Hendrik. |
Last edited by: heze at: 3/17/2015 8:12:14 AM |
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3/17/2015 11:13 AM | |
Joined: 6/4/2008 Last visit: 10/4/2024 Posts: 1497 Rating: (324)
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Hi, by operating mode, the drive means it cannot make changes to parameters because it is running. Operation Mode in this case is not referring to for example P1300. If the drive will not start in the sequence, (and as you said P2841.0 is high, then probably one of the OFF commands is being held Low). Check out Function Diagram 4150 in the manual. Bits 1 to 6 must be at logic 1 BEFORE the drive is started with Bit 0. Don't worry about P2820, it was me deactivating the fault acknowledgment, by setting Digin 7 to the fault task, this will automatically sort itself out. I would scan in my logic diagrams/sketches to make it easier to follow, but I am abroad at the moment with no access to a scanner. Regards, Graeme |
3/24/2015 8:29 AM | |
Posts: 6 Rating: (0) |
Good morning everyone, Graeme, did you already have the opportunity to scan the logic diagrams? I would really like to see them, because I would like to understand the programming as much as possible. I verified the program and it looks like it's doing exactly as the timing diagram said. I also have two new questions: I discovered a small error in the timing diagram. The door closed feedback signal stay high upto the moment the door is opened again. In the Timing diagram, this is not the case. I'm building the MM440 into the application now, so I cannot verify what will happen in the real situation, so my question is: does the program have to be changed for this reason? I can start and stop the motor and when I set the speed control to an external potmeter. Is it also possible to use a fixed frequency parameter inside the MM440? I already tried this, but when I set the speed control to fixed frequency, then it listens to the DIN1 - DIN6 inputs, and these have other functions now, so the motor will not start... Thanks for the answers! Best regards Hendrik |
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