On Mon, 6 Apr 2020, Jon Elson wrote:
Date: Mon, 06 Apr 2020 11:27:23 -0500
From: Jon Elson <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: "Enhanced Machine Controller (EMC)" <[email protected]>
Subject: Re: [Emc-users] Gecko Failure
On 04/05/2020 11:24 PM, John Dammeyer wrote:
Anyone ever run into this sort of thing with a G213V driver?
http://www.autoartisans.com/mill/G213V-Failure.jpg
It was running the Knee with a 1200 oz-in motor and 60VDC power supply.
Typical result of a high-resistance connection getting hot. And, almost
everybody in the industrial connector business makes these "Euro-style"
connectors, so I'm sure for cost reasons Gecko does
NOT use Phoenix Contact parts, but a Chinese equivalent.
It may also be that transistors in the Gecko failed and it put full DC supply
voltage on the motor winding
until fuses or whatever blew.
Jon
Yeah, its unusual for the drive power connections to fail since they typically
have low average current. Its much more common for the motor connections to fail
The general problem with Tin connectors is that they have a positive feedback
failure mechanism if used anywhere near their current limits, their contact
resistance rises over time and heat exposure and the higher the resistance,
the high the temperature and the faster this degradation progresses...
Peter Wallace
Mesa Electronics
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