Fanuc amplifier 6v battery / Mach3

[fomaz]

Hello.

I bought 3 machines for a good price that have 10 years old, last time that they worked was in 2005. All with Fanuc parts, motors controllers and so on. This is realy my first time with fanuc although I am quite experienced (I think) with mach3 and cnc machines.

1) All machines have the batterys low and they are 6v; I called the fanuc representitive and they ask 59€ for each. Since I do not have sure if the rest of the machine is ok, I was thinking in using standard 4x1.5V batterys for testing the machine before buying 6 packs of batterys. Will I damage the servo amplifier using standard batterys?

2) Since I do not have complere sure that the machines will work (I am now cleaning them), I would like to know if it is possible to use the motors and original controllers with mach3 (step/pulse). Bassically I am asking if I can use all the Fanuc present in the machine expect the controller.

Thank you all,
fomaz

[Al_The_Man]

What Fanuc controls are they?
Most older systems use 4x 1.5v 'D' cells.
What type/numbers are on the battery?
Are they red or yellow cap motors?
The drives are not compatible with Mach.
Al.

[fomaz]

Fanuc controls:
21T and 21i-M

Battery numbers:
BR-CCF2TH (yellow)

Motors are red cap


Thank you

[Al_The_Man]

Unfortunately the motors cannot be used with Mach either, the encoder commutation is not presently compatible, there is someone working on a conversion.
If you have the parameters etc, these will be in advance of anything like Mach, if you can get them going.
Those are standard batteries made by panasonic and others and should be readily available from other sources.
Al.

[BodylinezCNC]

Al,

Can the red cap, or yellow cap fanuc motors and their drives be controlled via EMC?


Brent

[Al_The_Man]

There is a lot of difference between Yellow cap (DC brushed) and Red cap (AC).
The brushed motors and MAYBE the drives could be integrated with EMC, you would have to check the site.
Servos are used with Mach3, just that the loop is closed to the drive, with the exception of the Galil add on, where the loop is closed to the motion card.
At the moment, the redcap present some challenges due to their commutation method.
Al.

[BodylinezCNC]

Thanks, for the reply Al.


So, Mach 3 can interface with the DC Brush type yellow cap motors and there drives with the correct add ons?

What is the difference/benefits between closing loop at the drive compared with closing loop at the motion control card?


I will correct my previous post on closed loop subject.

Brent

[Al_The_Man]

With the loop closed back to the controller, any move commands are confirmed and tracked in the event of following error etc.
When Mach issues commands, it rely's on the drives to confirm the position, (servo's), so unless advised, it does not know if there is an error when issuing position commands.
Also with closed loop to the controller, it is possible to achieve Electronic gearing where one motor is slaved off another, and Electronic Cam functions, as is possible with a motion card such as Galil.
Most often the Yellow cap motors are fairly large motors, so you would need a high capacity drive and one that had step/dir capability.
Typically the Fanuc drives were 3 phase SCR control.
Al.

[BodylinezCNC]

SCR controlled meaning Silicon Controlled Rectifier Drives.

What are the the options on these drives?
Can they interface with Mach 3?

Thanks,
Brent

[Al_The_Man]

I am not aware of anyone that has, especially being 3 phase, unless maybe a RPC is used.
The advantage with SCR, they switch directly across the AC line and produce DC without the otherwise large Capacitive power supply.
3 phase full wave rectification is fairly smooth.
Al.

[mlwou812]

go to baterys are plus they can make them for you but machine must be on to remove bats

[BodylinezCNC]

What are the source for these smaller batteries?

Does anyone know of a company with free catalogs that supply the smaller 1.5v series batteries?

Thanks,
Brent