Series 1 Heidenhain TNC151A won't power up

[promodsam]

I just purchaced a Series I with the TNC151A controller. It originaly cam as 460 power and I have converted over to 220. I think I have done all the corrrect connections? I have a phase converter and have swithed the legs around a couple of times to see if that's the problem. I can't get anything to work, nothing will power up and I keep blowing the 1amp fuse in the back of the Heidenhain control?

I read on this site that it might not power up if it low on oil?? Can any one help. Thanks Sam

[gridley51]

If it is blowing the fuse on the Heid unit the fault is nothing to do with low lube.I would check the input voltages very carefully.
Mark.

[gus]

If you have never seen it run it is possible the power supply has gone south. Check the voltages first as mentioned

[promodsam]

I have checked the voltages to the heid unit at pins 8 and 9 and have the correct 110 voltage, the fan is the only thing that will operate.

I have checked the 24 voltage at 116 and 90 an it is a little high 32v
Also checked at 65 and 90 and have the correct 24v.

I'm new to this machine, but have spent many hours trying to figure things out, I have all the original manuals.

Should the machine run even if the fuse on the Heid is blown?
Thanks Sam

[gus]

I thing 32 is more than 'a little' high

recheck your transformer jumpers/ connections

machine will do nothing without the control

[promodsam]

Maybe I sould look at replacing the voltage regulator? Thanks for the info.

[Doug Schwochert]

Sam


30 -32 volts on 90 116 are correct. that is un regulated voltage. the transformer output voltage is 30 volts. 24 volts on 90 and 65 is regulated voltage.

line 1 and line 2 MF 1 and MF 2 should be the fuses that have 220 Volts without the converter running MF3 only has voltage there with the converter on if you are using a rotary converter. it will be less than 200 volts.
if you had the converter hooked up wrong you may have let the magic smoke out something.
Just my uneducated opinion I am by no means an expert.

Doug s

[promodsam]

Thanks for the info Doug. The bridgeport manual says the DC voltage between 116 and 90 sould be 24-28 volts. Also says the smoothed DC voltage between 65 and 90 should be 22-26 volts.

Is this not correct?

[Dirky]

Hi. I just started to think of this problem so dont take anything I say as gospel....takes a few days for my brain to reach altitude.....anyway...dont forget to look at the voltage setting that is located on the back of the heid 151 control.....you may have it set wrong ..look in the bottom left corner at the back.....did the control function before you got it home and altered anything ? DONT replace the fuse with another until you figure things out...no matter how frustrated you become...as the guys here have taught me...a little patience and you will have a control that is worth the effort.

[Doug Schwochert]

Promodsam

I couple extra volts on 116 and 90 will not make any difference all that circut runs is some selenoids and lites as in the previous post check the voltage selector on the back of the TNG if that is correct unplug all the resolvers and joy stick from the TNG maybe you have a short in the wiring and not a problem in the TNG.
I have lots of spare parts if you need I converted a series 1 to Mach 3 Mill

Doug S

[promodsam]

I have checked the back of the controller the voltage is set to 120. I will try to unplug everything from the control and see if the fuse keeps blowing. I have been on the mach 3 website, looks like good stuff.

I'm new to the cnc world, would I be better off switching to the Mach 3 instead of learning the 151?

How complicate is it to change over to the Mach 3?

Thanks Sam

[gus]

That depends if you want a project or a machine. The 151 is a solid control that will run for years. Some of the retroed 'improvements' run half as fast and the owners are constantly in need of assistance.