CAD CAM EDM DRO - Yahoo Group Archive

Power supply and servo questions

on 2001-01-29 17:57:36 UTC
Given the advice I got here I decided to abandon using my
welder transformer and get (2) "51 vct 15 amp,
(TP)07-01AJA-2H, 59/51 or 29 vct depending on how primary
is configured. Racal power supply is a "transformer in a
box" with a fuse, power switch, EMI filter / 3 blade ac
socket and a nice heavy aluminum carry case.
Primary 100 / 115 / 230 vac (switchable from exterior),
47-65 Hz. 20 pounds. 7" by 7" by 6" high. Don't forget to
pick up a three blade cord. $85 each" (proceeding in
quotes is product desc.) power supplies from Surplus Sales.

I'm planning a servo system using Gekko G320 servo drives
and CNC PRO.

The questions:
1. What DC volts will this give when rectified when used on
the 59 or 51 vac taps?

2. What amperage and voltage should the rectifiers be if I
am planning on using no more than 75vdc at 10A max
continuous and 20A surge? (of course I'm assuming that the
above voltage is less than 75!!)

3.Is there any reasonable/easy/inexpensive way to reduce the
volts to 75dc if needed?

4.I have (6) 75vdc/100vdc surge 23000uF caps, will these
work in a servo system? ( I was told by Mariss of Gekko
drives to use 100 volt caps)

5.I am planning on using 60 volt motors, If I limit the
speed to their rated rpm will I limit the input volts to
60v?
Thanks Bob

Discussion Thread

Robert Allen & Marsha Camp 2001-01-29 17:57:36 UTC Power supply and servo questions