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Gunner Asch[_5_] Gunner Asch[_5_] is offline
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Default VFD Braking resistors - was My Powermatic drill press with VFD

On Mon, 21 Dec 2009 10:20:58 +0000, wrote:

On Mon, 21 Dec 2009 00:32:15 -0800, "Bill Noble"
wrote:

note also that you can use a light bulb

"David Lesher" wrote in message
...
GeoLane at PTD dot NET GeoLane at PTD dot NET writes:


My Teco VFD specifies a 70 Ohm, 200 Watt braking resistor. I did
some quick looking on eBay and Mouser. It looks like the least
expensive ones are the open tube ones - BUT at around $33 and up. Is
there a less expensive place to buy these or a different way to search
either site that would bring up the less expensive alternatives?




Do NOT use a light bulb. The cold resistance of a light bulb can
be less than 1/6th of its nominal hot resistance and this much
lower resistance overloads the VFD braking circuit.

Jim


Indeed!!!

Gunner




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