I turned the mill and lathe in my friends garage and i am getting overvolt alarms. These machines have been wired for years and never had this problem. When i check the voltage there are 2 wires coming in that are 110 each leg and on the underside there are 3 wires that come out and the middle wire has no voltage coming out. Im assuming it takes 220 in and distributes it into 3 lines but the fact that both machines have the same alarm has me baffled. Can anyone shed light on this please? Thanks guys
The mill is haas tm1
Lathe is tl1
Do you mean a pic of how the wire comes into the machine or a pic of the meter while im checking it? I will be there tomorrow again. The voltage was near 120 sorry that was my error. I posted a pic of the 2 wires coming in at the top and the 3 coming out at the bottom
Do you mean a pic of how the wire comes into the machine or a pic of the meter while im checking it? I will be there tomorrow again. The voltage was near 120 sorry that was my error. I posted a pic of the 2 wires coming in at the top and the 3 coming out at the bottom
I didnt see a low battery alarm but i know the machine has been sitting for atleast 3 years and the breakers were off. If the battery died and lost all parameters could that be what is causing the problem?
I will check later when i am there. The machine has been run and was working fine. The thing that i find odd is that both the mill and lathe are both getting the same alarm and they had both been running without any issues.
If the incoming voltage is slightly different now than it was when last run could the jumper just need to be changed
1 says up to 220 and the other says 220 and over if i remember correctly
I just checked the voltage
The 2 wires coming in are 119v each
On the out side the wires on each end have 119 coming out but the middle wire has no power
You are running single phase 240v so the center wire is not meant to have any power, yes you could change the jumper as you may be getting an inrush that is causing the alarm
There may be 2 power supplies that you need to check both of the jumpers are correct for 240v or above
Mactec54
I am heading back to look at the machines today. So if the incoming voltage is good on both wires it must be something with the machines. Its just wierd that both have the same problem and they have been sitting. So a dead battery wouldnt cause this? I dont know what else to check. If there was a power surge it shouldnt have effected the machines because both breakers were off. Anyone have any other suggestions? Is there a fuse on the power supply?
Consider that the power company could have retapped their transformer to boost the line voltage a bit since the last time the machines ran. My incoming power averages 245V. I have my TM-2P jumpered for over 240V, works fine.
Measure the incoming voltage across the 2 hot wires, rather than each to ground as you have been doing.
Jim Dawson
Sandy, Oregon, USA
This thread seems to have some kind of a problem, looks like it quit updating properly
Jim Dawson
Sandy, Oregon, USA
I just checked the voltage and it is at 241 volts between the 2 lines. The highest jumper goes from 221-240 and the transformer toward the bottom of the cabinet goes from 224-250
Since the voltage is at 241 that is 1 volt over what the jumper says. Could that cause the problem i am having? How do you correct the voltage?