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Messages - SAWDOG

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1
FAQs / Re: CNC controller blowing fuses...please help!
« on: July 06, 2022, 12:50:58 PM »
problem fixed. bad wire.

2
problem solved. last week i bench tested the capacitors and resistor/diode combos and apparently assembled the diode backwards. i then found a faulty wire barely hanging on on the circuit that had been failing. i was sure i found the problem but the fuse still failed because diode being backwards. another round of retesting those components found the issue with the diode...put it back the way it should be and presto!
i believe the initial problem was the faulty wire but i only found it after i had created another problem. hope this helps someone. thanks again joe average!

3
joe, i actually already did that. the fuse blows upon initial power up with all sensors unplugged. i also removed all 5 of the sensor receptacles and cleaned and checked for loose/broken wires. it has to be something that was affected by the physical move, again. thank you for your reply

4
General Mach Discussion / cnc controller blowing fuses...please help.
« on: July 05, 2022, 12:09:49 PM »
I have a CNC Router Parts Nema 23 control w/ESS.  this system uses a toroidal transformer, 2 x 115vac primary with 28v Ac 8amp and 8v Ac 2amp secondary's. when i power up the machine the 2amp fuse after the transformer and bridge rectifier keeps blowing, this is the side that powers the proximity sensors. i cant find any loose or broken or grounded wires. this happened 2 years ago when i moved the machine and i simply replaced the 2amp fuse and been running fine. well, i just moved again and this time the fuse blew again and the problem is here to stay. i am desperate for help as this is how i make my living and the support team at avid cnc only want to sell me a new control system, very frustated. thank you in advance, Dan
Modify message
was not sure where to post this. thank you

5
FAQs / CNC controller blowing fuses...please help!
« on: July 05, 2022, 11:56:26 AM »
I have a CNC Router Parts Nema 23 control w/ESS.  this system uses a toroidal transformer, 2 x 115vac primary with 28v Ac 8amp and 8v Ac 2amp secondary's. when i power up the machine the 2amp fuse after the transformer and bridge rectifier keeps blowing, this is the side that powers the proximity sensors. i cant find any loose or broken or grounded wires. this happened 2 years ago when i moved the machine and i simply replaced the 2amp fuse and been running fine. well, i just moved again and this time the fuse blew again and the problem is here to stay. i am desperate for help as this is how i make my living and the support team at avid cnc only want to sell me a new control system, very frustated. thank you in advance, Dan

6
General Mach Discussion / Re: mach 3 homing issue
« on: November 04, 2020, 02:48:54 PM »
thank you for the response. no, i have no wiring diagrams but i did just find the issue. it was a blown 2a fuse on the power supply, now i have 12v to my sensors and all is well. thanks again to you and tweakie. dan

7
General Mach Discussion / Re: mach 3 homing issue
« on: November 04, 2020, 01:13:18 PM »
tweakie, i am not getting 24v to my proximity sensors. the i/o board that is mounted on top of my ESS board has proper outputs going to everything but my sensors.
do you think the i/o board could have been damaged when my power switch went bad? thank you for any reply. dan

8
General Mach Discussion / Re: mach 3 homing issue
« on: November 04, 2020, 08:23:29 AM »
I installed the new 10A emi filter/switch...i had already ordered it so i figured i should try it. No luck! control system powers up, resets, but when i try to home each axis the limit switches are not responding. I am in the dark at this point and already losing business at my busiest season...aaarggghhh! any advice? thank you

9
General Mach Discussion / Re: mach 3 homing issue
« on: October 29, 2020, 09:31:41 AM »
I have found a possible replacement switch/filter...one issue. The old switch is rated for 15A, the 'new' one is rated for 10A.  this system is running 4 nema 23 stepper motors and a 2.2kw air cooled chinese spindle, will 10A be enough?
unfortunately i am running into serious issues over what should be a simple fix, not to mention the down time during my busy season.
This is for a plug and play system from Avid Cnc...they seem unable to provide any support for their systems. Does anyone here have a suggestion on/when replacing this control system for something new. thank you in advance, dan

10
General Mach Discussion / Re: mach 3 homing issue
« on: October 26, 2020, 08:28:05 AM »
Yes, kinda seems obvious but i am not very very experienced in this field yet. that same switch is no longer available. i will see what i can come up with. thank you for your reply. Dan

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