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Messages - cnc-it

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81
Galil / Re: Mitsubishi HF-SE Ac servos and drives.
« on: June 15, 2011, 03:30:47 PM »
Have a chance to get a Mits 2KW servo with the super encoder on it. Was thinking of using it for a servo spindle. Problem is it has a brake on. Is it possible to remove the brake or will the servo have a longer shaft than usual to accomadate the brake. If it can be removed will the encoder need realigning. Presuming the encoder is not pinned for location.

Thanks John

82
Galil / Re: Mitsubishi HF-SE Ac servos and drives.
« on: June 07, 2011, 05:10:30 AM »
Hi just sent you an email through mercury leisure.

Cheers, John

83
Galil / Re: Mitsubishi HF-SE Ac servos and drives.
« on: June 07, 2011, 04:38:17 AM »
Hi yes slipped up with these I think! Do you have the 40A drives available. If so what price would I be looking at?

The info on setting parameters would be a great help.

Thanks John.

84
Galil / Mitsubishi MR-J-40C-S100
« on: June 07, 2011, 02:55:43 AM »
I have managed to aquire a set of 3 Mits MR-J2-40C-S100 drives and 3  HC-MF43K-EU servos.

I'd like to run them with a Galil card but I can't seem to work out what command signal they require.

They only seem to take a manual pulse Generator input on the CN1A terminal or can have a simple set of commands downloaded to them via RS232 or RS484 through the CN3 terminal. Maybe I should have the general purpose A series instead of the C series?

The manual says these are the same spec as the A General purpose series with "added functions" Can I set parameters to change the functions of the pins on the CN1A terminal?

It says in the manual that it will accept a "Differential line driver or open collector system"

Thanks John

85
Galil / Re: Mitsubishi HF-SE Ac servos and drives.
« on: June 06, 2011, 03:33:06 PM »
Hi I have managed to aquire a set of 3 Mits MR-J2-40C-S100 drives and 3 HC-MF43K-EU servos.

I'd like to run them with a Galil card but I can't seem to work out what command signal they require.

They only seem to take a manual pulse Generator input on the CN1A terminal or can have a simple set of commands downloaded to them via RS232 or RS484 through the CN3 terminal. Maybe I should have the general purpose A series instead of the C series?

The manual says these are the same spec as the A General purpose series with "added functions" Can I set parameters to change the functions of the pins on the CN1A terminal?

It says in the manual that it will accept a "Differential line driver or open collector system"

Thanks John

86
Some nice gear there JH. All these motors and drives can be run from a Galil motion card. The Galil cards need an encoder feedback and I'm thinking with those drives you have might have a Tach feed to them from the motherboard to regulate the speed.

The encoders will probably go to the motherboard which handles the positioning and also creates a tach signal for the drives from the encoder feed?

Presume you are loosing the drives though as they are 3 phase...just pointing out if your motors don't have Tachos it might be a pia!

Looks like a Fanuc 5T control to me or maybe a Fanuc 6A?

The Fanuc AC analogue drives A06B-6050 types commutate the motor from the drive using the encoder position which is set to a certain angle with the motor poles. The encoder feed also goes to the Fanuc mother board which closes the position loop and handles the motion commands to give the drives the analogue signal they require.

On the Fanuc DC Yellow cap motor set up (similar to the Yasanak) the mother board converted the encoder signal to a velocity signal for the drives and also used it to close the loop..no tacho needed on the motors..works very well!

john




87
Galil / Re: Fanuc 3 axis drive
« on: April 21, 2011, 07:20:46 PM »
I would really stick with what you have if possible.

The OMC is a great control and to get Mach working as well with pitch error and backlash comp working properly will not be cheap.

It will be cheaper to get  a Fanuc engineer for a day to reload software and ladders onto the machine. Not to mention the time it takes to set Mach up and get it working to the standard of the Fanuc OMC (if it's even possible?)

A Fanuc engineer can modify an existing ladder and he will have the correct software etc to hand.

Whats the machine?..I might be able to help.

John

88
The paint looks great, really like the pendant!

John

89
Hi JH looks really nice! Do you spray the paint on or use a roller?

Would have stuck to the flexi metal y axis cover which hangs over the turcite coated brackets though. I've found the rubber type can snag on the table front during x axis moves and also sag onto the ball screw when the swarf starts building up!!

John
 

90
Great to see a real vmc get the Mach treatment  ;D

John

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