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Servo Motors and Drives Discuss servo motors, drivers and other related topics here.


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Old 12-31-2010, 07:57 PM
 
Join Date: Nov 2010
Location: N. Ireland
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GT390 is on a distinguished road
PKS Digiplan Schematics Required

Hi I am looking for drawings of the 1980's PKS Digiplan / Parker 1340 004 03
DC servo drive board
can anyone help

Thanks
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Old 03-26-2012, 03:19 PM
 
Join Date: Mar 2012
Location: US
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kdaburlos is on a distinguished road
Thumbs down 1340 any version

I worked for Digiplan in the 80s, xfer when Compumotor aqquired them. Drawings... good luck. If you did get one, most likely all components are obsol.
kd
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Old 03-26-2012, 03:51 PM
 
Join Date: Nov 2010
Location: N. Ireland
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never managed to get it sorted, I have two machines, three of these in each machine, so six altogether !!

it keeps blowing the transistors off the heatsink, big short somewhere when it switches, but I cant find it,did manage to get most of the components, but got tired of trying to fix it

It needs someone who knows more about electronic circuits than I do


fancy having a go at it ????
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Old 03-29-2012, 06:10 PM
 
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Exclamation Well... yes its a deep thought

With out having a Sch. I'm taking a guess. I forget what the bridge looks like. It is probably uni-polar, maybe bi-polar. In either case you getting shoot through or crossover. You could look at the gate signals and on-off times for fets. Try slowing the gate signals down a little. Don't know what that will do to performance. Might keep the smoke inside!
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