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Messages - hughes674

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1
General Mach Discussion / Re: AC DRIVE ISSUES.
« on: December 16, 2018, 07:18:36 AM »
Hi TPS

I am unable to gain access into the faulty drives to read the error codes directly. The screen displays five dashes and are locked out. Schneider have been looking into this and believe it to be a hardware problem?? They are arranging for the drives to go back to Germany for testing. This is great if they can confirm the drives are faulty or have been wired incorrectly. Not really bothered if I have to buy again so long as I can get to the bottom of the problem.

 Do you have these drives or have you downloaded the manual?

Thanks
Mick   

2
General Mach Discussion / Re: AC DRIVE ISSUES.
« on: December 15, 2018, 01:00:42 PM »
Craig

Looking at my old thread regarding wiring these drives. http://forum.machsupport.com/forum/index.php/topic,37773.270.html. Page 28 It was said "Make sure that the supply sourcing the output current is returning to the same supply. That is do not use the X axis drive to supply output current for a Z axis output."

My wiring doesn't follow the diagrams you kindly supplied as I wanted to use an external power supply. I have noticed pins 11 on both drives have the same GND path for the enable signal on Di1.

Could this be causing anything on toward?

Thanks
Mick

3
General Mach Discussion / Re: AC DRIVE ISSUES.
« on: December 15, 2018, 12:50:29 PM »
Hi

I am unable to connect to the drives using the Somove software so cannot update on the error faults.  >:(

Mick


4
General Mach Discussion / Re: AC DRIVE ISSUES.
« on: December 12, 2018, 05:50:59 AM »
Hi
Thanks coming in. Yes I have check the 24v and 230v supply and are in range. I'll send the error codes through later when I get home.
The errors are on the drive not the controller.

5
General Mach Discussion / Re: AC DRIVE ISSUES.
« on: December 12, 2018, 02:22:36 AM »
Hi Craig
Will fitting line reactors have anything to do with the drives going down. Considering one has stopped working when only being enabled and not under load.
Cheers
Mick

6
General Mach Discussion / Re: AC DRIVE ISSUES.
« on: December 12, 2018, 01:50:01 AM »
Hi Craig
The manual states 230v +- 10%. This right on the limit of our supply voltage. Probably not needed but for £70 thought it worth doing.
The manual also says DO NOT USE THESE DRIVES WITHOUT EMC FILTER. I have fitted the EMC filter recommended for the drive.
When the first drive failed there was no EMC filters fitted and the wiring hasn't been altered apart from fitting the filters.

Cheers
Mick

7
General Mach Discussion / AC DRIVE ISSUES.
« on: December 10, 2018, 02:32:32 PM »
Hi All

I am in the process of completing a cnc retrofit using Schneider Lexium 28 drives and BCH2 motors. I am now on my third drive that has totally given up for no known reason. I have as far as I am aware wired the drives correctly but I am no expert by any means when it comes to electronics. Would anyone be kind enough to take a look at the schematic and advise where the issue may be in my wiring. I don't believe this is a drive issue as its happened three times.
I can post the manuals or just screenshots if required.

Thanks
Mick 

8
General Mach Discussion / Re: Spindle/ C Axis using CSMIO/IP-A
« on: November 11, 2018, 09:07:23 AM »
Hi All

Long time no speak. Lol
 
Can you give me your thoughts on the schematic from the Lexium manual with regards to protecting the digital outputs Do1-Do5 against damage from inductive loads. I want to wire Do5 output to disable the drive in the event of a servo fault. I am using logic type 2 with an external power supply. My idea was to break the 24v supply that enables the drive with output Do5. The manual mentions protecting the outputs from inductive loads. Would this apply to this situation? Or can I simply wire Do5 directly with 24v?

Appreciate your thoughts on this.       

Thanks
Mick

9
General Mach Discussion / Re: Spindle/ C Axis using CSMIO/IP-A
« on: October 30, 2018, 02:18:37 PM »
Can anyone assist on this please.

Both X and Z axis all working great. Power up the following day and Z-axis servo drive faults out as before. Five dashes on the HDI and the drive locked out. Exactly the same fault codes as the previous drive. This is the second drive that I have had to replace. Luckily I haven't had to pay and have just been exchanged.

Checked my input voltage from the mains which is around 252v most of the time. The specs in the manual states a maximum voltage of 230v +-10%. I am a little concerned that my mains voltage is on the limits of what is recommended for the drive. Could this be causing the issue? Should I use a step-down transformer to reduce the input voltage to 230v?

Mick

10
General Mach Discussion / Re: Spindle/ C Axis using CSMIO/IP-A
« on: October 16, 2018, 04:04:17 PM »
Hi Craig

Thanks for your response.

The encoder is 20 bit I believe. (See screenshot)

 The downside is that the CSMIO has limited signaling speed, and in any event signaling over 500kHz between controller
and servo drive is DIFFICULT at best there is therefore a practical limit to the resolution beyond which the signaling speed limits the rotational speed.


If my calculations are correct the kernel speed should not be an issue at whatever resolution considering the rpm of the C axis will not need to exceed anything over 100rpm. 

If P1-46 does adjust the encoder resolution which has a max value of 40,000.  Using this ridiculously high resolution. 40000 x 4 x 100/60 = Kernel speed of 266khz. To get the resolution I require would only need 10,240 lines/rev. So 10,240 x 4 x 100/60 = Kernel speed 68khz.
Please correct me if I'm wrong.

I don't follow you on the zero error window.

Mick


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