Millport VMC1660 Centroid Upgrade (Leadshine EL7)

[KreiderMachine]

Greetings all,

We have a Millport bed mill (VMC1660) with M400 control and a Servo4 servo drive which has been giving an intermittent communication error (#439) for years. After fiber cleaning, connection re-seating, power supply testing, etc, we suspect the CPU10 board to be at fault.

Rather than to throw "good money after bad," we have decided to bring the unit into the modern age with an upgrade. Conversations with Liviu and Keith have produced a kit for us with Hickory controller, Leadshine EL7 servo drives, and Leadshine ELM2 motors.

Today begins bench testing on that system, and so this post is meant to establish our starting point for the project.

If any of you have cautionary tales to share regarding setup and planning, they would be most welcome.

Photo album:

[glbreil]

Nice, looking forward to seeing the progress. I have a Millport Rhino with an M400, probably a little older (1997). It looks quite a bit like yours less the tool changer.

Good luck I used Hickory and Leadshine EL7s on a CHNC lathe recently and like it a lot.

[KreiderMachine]

Today, I am going through the cabinet, labeling everything I can, removing components that definitely will not be re-used, and compiling a list of components that still need to be purchased.

The old cabinet contains an "inrush" limiter, consisting of a large capacitor, and 6RI50E power block.

Seems like a good thing to have...

Should this be preserved in the new configuration, somehow, even though it is not shown in the new schematic?

[centroid467]

Today, I am going through the cabinet, labeling everything I can, removing components that definitely will not be re-used, and compiling a list of components that still need to be purchased.

The old cabinet contains an "inrush" limiter, consisting of a large capacitor, and 6RI50E power block.

Seems like a good thing to have...

Should this be preserved in the new configuration, somehow, even though it is not shown in the new schematic?

That appears to be a 3 phase rectifier which is likely to have been powering the SERVO4 shown in the pictures. Probably not necessary at all for the new installation but I'd hold on to the parts since they could be useful elsewhere.

6RI50E datasheet

[KreiderMachine]

Looking ahead at the Carousel wiring:

These connections from contactor 3 show the use of the ecat1616 expansion kit. Is there a reason for this? There are loads of unused relays on the relay boards. What am I missing?

https://photos.google.com/photo/AF1QipP ... 6exjowP5m_

[centroid467]

What schematic number is that photo from? It does not appear to be a Hickory schematic (PLCADD1616 is not the expansion for Hickory). Is it S15098?

Our records show that the PLC program for your system would be Hickory_Mill_ATC_Umbrella. I found rev 4 of that PLC program and it has no requirement for a PLC expansion card.

The basic wiring is as in S15208 which should have been provided with your system. The umbrella ATC specific stuff not shown in that one is wired as follows. I would copy the CNT3/CNT4/OCR3 block from the schematic you showed for this.


Outputs:
INVERTER/ORIENT relay board 2 relay 2
TOOL UNCLAMP relay board 2 relay 6
Carousel Enable relay board 2 relay 7
Carousel forward/reverse relay board 2 relay 8 (signals going to CNT3 and CNT4 on the schematic picture)
Air blow relay board 3 relay 2
Carousel in relay board 3 relay 7
Carousel out relay board 3 relay 8

Inputs:
Zero speed to H3 IN12
INVERTER/ORIENTED to H4 IN21
LOW AIR SWITCH/NC to H4 IN22
TOOL CLAMPED SWITCH/NO to H5 IN25
TOOL UNCLAMPED SWITCH/NO to H5 IN26
TOOL RELEASE SWITCH/NO to H5 IN27
TOOL COUNTER to H5 IN28
CAROUSEL HOME to H5 IN29
CAROUSEL OUT sensor to H5 IN31
CAROUSEL IN sensor to H5 IN32

[KreiderMachine]

#S15208 Shipped with our kit, and I have been referring to that, but the one I printed out and sent the photo from is #S15259r2. Liviu included xx259r2 in a correspondence earlier in our kit-building process and, because it included the ATC, I had it printed out.

I have the two schematics posted beside each other on the cabinet door for cross-referencing because there are a few inconsistencies I have found in xx259. I can compile those notes if this would be helpful to you all when I am done.

This news is helpful and a relief. Thank You!

[centroid467]

#S15208 Shipped with our kit, and I have been referring to that, but the one I printed out and sent the photo from is #S15259r2. Liviu included xx259r2 in a correspondence earlier in our kit-building process and, because it included the ATC, I had it printed out.

I have the two schematics posted beside each other on the cabinet door for cross-referencing because there are a few inconsistencies I have found in xx259. I can compile those notes if this would be helpful to you all when I am done.

This news is helpful and a relief. Thank You!

Ahh, I was not searching for the right terms. S15259r2 looks right except as you noticed, there may be a few labels that were missed. Thanks for catching these errors, I'll get them corrected soon.

Please let us know if you have any other questions or issues.

[KreiderMachine]

centroid467,

Bringing our conversation back to the forum,

How might I find out what PLC Program I am using? Is this on the controller itself, or on the CNCPC?
I have the hickory mounted in the cabinet at this point, and the CNCPC won't load into CNC12 once it fails to detect the controller.

-H

[centroid467]

centroid467,

Bringing our conversation back to the forum,

How might I find out what PLC Program I am using? Is this on the controller itself, or on the CNCPC?
I have the hickory mounted in the cabinet at this point, and the CNCPC won't load into CNC12 once it fails to detect the controller.

-H

Easiest way to check which PLC program is in use is to go to the CNCPC and open the cncm directory in the root of the C: drive. Look for mpu.plc and open in a text editor. Don't make any changes to this file.

It'll show the full text of the PLC program as compiled as a comment above the compiled output.