Re: [CAD_CAM_EDM_DRO] Re: Gecko 2xx "Nema 42 modification"???

Mariss,

Good info -- thanks. Should I wait for the REV-5, or will it be a while? If
you can offer a target date, I can make an informed decision about when I
need to order three of them. This shouldn't impact typical customers, but
since I'm starting out playing with the Nema 42 motors and may end up
switching to smaller ones, I would like the option. I presume this revision
pertains to the 210 also, since they use the same main circuit board? I
believe that with EMC's 5KHz max step rate, I need to use the 210's if I
want some higher velocities.

Regards,

Paul R. Hvidston, N6MGN
ACKSYS Engineering
Upland, CA

----- Original Message -----
From: "mariss92705" <mariss92705@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, February 27, 2002 12:32 PM
Subject: [CAD_CAM_EDM_DRO] Re: Gecko 2xx "Nema 42 modification"???


> Peter,
>
> The "42-Mod" consists of placing a 150K 0805 size resistor in
> parallel with a 1MEG resistor that is on the standard drive. This is
> done by soldering it on top of the existing resistor. The "mod" can
> be reversed by removing this resistor.
>
> My concern here is with potential damage to the drive if someone
> tries to do it themselves without the correct SMT rework equipment or
> techique. The component spacing is very tight, leaving little room
> for error if it isn't done correctly.
>
> The next revision (REV-5) of the G201 will have this "42-Mod" as a
> jumperable option along with a few other minor improvements.
>
> Mariss