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HF500 spindle pump on/off -> twitching motors

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Per Takman
(@per-takman)
Beiträge: 36
Eminent Member
Themenstarter
 

Good news!

I've now found a solution to avoid the motors twitching when turning the spindle pump on/off.

1. A high quality line filter between the pump and the supply.
2. Two snap on ferrites on the parallel port cable close to the SC PCB.

I have to say that it is a disappointment that SC release a product that have not been properly tested for immunity to pickup disturbances. Especially when the disturbance is coming from their own choice of spindle pump.

I hope that SC will find a better pump and that users of the forum benefit from the effort I've made.

Cheers,

Per Takman

 
Veröffentlicht : 30/11/2016 11:22 pm
(@peterg1000)
Beiträge: 390
Reputable Member
 

Hi Per,

Glad you have finally overcome your interference problem. Trouble is that system interference suppression is still somewhat of a black art, and what works for one configuration may well fail for another.

For every unfortunate user ( such as yourself ), there are probably dozens who have never had a hint of a glitch - and this includes me! At least your problem succumbed to a logical approach and will be a good guide for others with similar problems.

Cheers,

Peter

SC 420/2, Industrial VFD spindle from StoneyCNC
UC100 + UCCNC
Cut2D, Autosketch10, Draftsight, Eagle 9.5.1

There is no problem, however simple, that cannot be made more complicated by thinking about it.

 
Veröffentlicht : 01/12/2016 1:10 am
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