Re: [CAD_CAM_EDM_DRO] The Servos from H**L...

audiomaker2000 wrote:

> Ok guys, I got this nifty idea to retrofit my 1985 Deckel FP2NC,
> which is a 3 axis vertical mill made in Germany. The drives are
> Bosch and it's a pretty neat machine except the control is having
> some serious problems.
> Ok, no big deal, a little help from Art and Mariss and I'll have
> this puppy howling along....
>
> Sooo, I crawl back to get the Servo spec's and am met with this on
> the nameplate:
>
> SEIMENS
> =PermMagn-Mot 1 HU3071-0/AC01-0ZZ9-Z
> IEC 71 NrE 9666 8208 33 011
> V 1/min A Kw
> 176 2000 7.6 1.09

OK, this is Volts=176
RPM = 2000
Amps = 7.6
KW = 1.09

That translates to about 1.25 Hp

> Mo 5Mn lo 7.1A VDE 0530 I CL F 100K

I think this is saying that the motor can take 7.1 A for 5 minutes, and
the insulation is class F.

> Err/excit V A <diode symbol> Lv mH
> Permanent IP54 Bauf BS

Permanent magnets in the field

> Mo Max 5.5Nm lo max 7.8A LCL F 130

And, if I've got the columns right,
Max Current is 7.8 A
and Armature inductance is 130 milliHenry

> = Tacho 1 HUM052 20mVmin Load 13 <ohm>
> Z G45 Made in Germany

This is the spec for the DC tachometer, but I'm not sure
I understand it. I find it hard to believe you need a 13 Ohm
load resistor on the tach.

> Best guess is that it's:
> 176V, 2000RPM, 7.6 amp and 1.09KW (1.5HP)

Yes, you found the important numbers.

> Can this moster be retrofitted to PC control?

Probably. You would suffer a big speed penalty if using the
Gecko servo drive, and it is only good to about 70 V, so you'd
get less than half the speed. There are plenty of other servo
amps, or maybe the ones in the machine can be reused.

What kind of encoder is used?

Jon