Re: Got my Gecko servo drivers

The URL is http://www.geckodrive.com/

It is pretty impressive inside. There is quite a pile surface mount
components on a PCB with mosfets and a voltage regulator sticking out
of the bottom of the board and pressed against a 1/8" thermal plate
that is also the mounting plate for the driver. I called Mariss to
ask some questions and he told me the plate is hard anodized and that
serves as the electrical isolation for the mosfets. The whole unit
measures 2-1/2 x 2-1/2 x 3/4".

Just as a note, there was an error on the silk screened art work on
this beta batch. Following is the info Mariss has e-mailed about it:
URGENT!

G320 PINOUT ERROR!

1) The G320 can art has a pin-out error. Correct encoder GND is
(TERM. 6). Correct encoder +5VDC supply is (TERM. 7). This error can
damage the encoder and drive.
2) The INSTALLATION MANUAL has a pin-out error. The correct terminal
for the motor RED wire is (TERM. 4). The correct terminal for the
motor BLACK wire is (TERM. 3). This error will make the drive
untunable.

The correct terminal functions are:

1) POWER SUPPLY GROUND
2) +18VDC TO 80VDC POWER SUPPLY
3) MOTOR MINUS
4) MOTOR PLUS
5) DISABLE
6) ENCODER GROUND
7) ENCODER +5VDC
8) PHASE A
9) PHASE B
10) STEP INPUT
11) DIRECTION INPUT
12) STEP/DIRECTION COMMON (+5VDC)

The one thing I found interesting is the common for the step and
direction being a +5 v not grd. Mariss told me that is because in
industrial units it is most common as the unit is hooked to an opto-
isolator using the + as a common. On a PC you just need to hook this
connection to a +5v reference. Mariss suggested one of the pins
(don't remember which) of a game port, but I am just going to tap it
off a +5v supply line as my Linux system does not have a game port
installed.

Tim
[Denver, CO]


--- In CAD_CAM_EDM_DRO@egroups.com, "Paul Devey" <paul_devey@s...>
wrote:

> I'll bit. What was inside the Gecko G320? What is their URL?