Need Help!- Mycenter 1 Alarm Flashing

[Pmp Audio]

Need some help Please,

Hi Everyone,

My name is Eric and just joined this forum and got a little lost on where to post this thread. I just purchased a used 97 Kitamura Mycenter 1 with 4th axis. I bought the machine from PM Machines in sunny California and now trying to get the machine running. After turning on the machine I get and alarm flashing and a message on the CRT screen stating "NOT READY" also when I connect AIR there is a leak at the spindle. I'm amusing the alarm is triggered by no AIR pressure? Do I manually put a tool holder in the spindle if so how would one release a tool holder from the magazine and manually put in the spindle with the air leak can't get the air pressure up. Would anyone have a check list for commissioning this machine?

Thanks in advance,
Eric

[stevo1]

I am not fimiliar with your machining center but. I always have some air coming out of my spindle on my machines. It depends how much air but if I am not mistaken its not a bad thing. Some one else might answer that better.

Your machine says not ready. Is there any other alarm description? If it was air pressure or anything else I would thing it would dispalay "low air pressure" or something. Look on your control or in the book to see if there is a standby button. On some mahcines and on many of mine they power up saying "not ready". Once you press the standby button the Estop clears and the hydraulics kick on and your good to go.

Stevo

[cweiss]

There will be some air from around the bottom of the spindle flange. This is an air over oil mist that keeps the bearings lubed and at the same time has positive pressure inside the spindle to keep chips out. Your "not ready" is coming from somewhere else.

[powercut]

If your getting not ready this means that the second stage of power on has not come on yet, check the following things:
1. Check to see if any axis is in the over travel position or if any of the over travel switches are stuck in.
2. Check all EMG buttons to make sure they are released.
3. Check the main power phase for CW direction and make sure you have power on all 3 terminals.
4. If it has an spindle oil cooler, make sure it is on and not in an alarm state.
5. With power off and locked out, check all fuses and overloads in the control cabinet. Reset or replace if needed.
6. If it has an over travel release button you could try pressing it as you press the power up or power on button.

Al from Powercut

[cweiss]

Originally Posted by powercut If your getting not ready this means that the second stage of power on has not come on yet, check the following things: 1. Check to see if any axis is in the over travel position or if any of the over travel switches are stuck in. 2. Check all EMG buttons to make sure they are released. 3. Check the main power phase for CW direction and make sure you have power on all 3 terminals. 4. If it has an spindle oil cooler, make sure it is on and not in an alarm state. 5. With power off and locked out, check all fuses and overloads in the control cabinet. Reset or replace if needed. 6. If it has an over travel release button you could try pressing it as you press the power up or power on button. Al from Powercut

All very good advice, but never just replace a fuse. Fuses blow for a reason. Something is very wrong if fuses are blown, also thermal overloads. Unless you know 100% where the problem originated from, do not reset these.

Also, phase (3) and rotation (CW) are very important as you stated. I would just like to add that Kitamura (and any other fanuc based controls) likes to see the high leg on the "T" of RST.

As far as the oil chiller, if it is a Daikin unit, the combination of the LED's make up the alarm. Keep in mind that this unit does not come on until the machine is in the "ready" state.

Another thing to check is that Kitamura has a little 2 digit screen on the operator's panel, in the middle, or the left hand side, that usually displays the tool number. This screen will also tell you what alarm number it is in. Press the small square "alarm" button (near this display) and look at the number. It will correspond to an alarm listed in the Kitamura Operator's manual.

Good luck.

[Pmp Audio]

Hi Guys,
It's been a while and there were people wondering what the outcome would be.
Hi

"Also, phase (3) and rotation (CW) are very important as you stated. I would just like to add that Kitamura (and any other fanuc based controls) likes to see the high leg on the "T" of RST." I'm using a rotary inverter so the one leg "wild leg" is on the hairy edge of being out of the 10% to the legs coming into the building. In reference to the RST are you referring to the L1 L2 and L3 sorry for being naive. I have been looking for a way to level out the "wild leg" so it's closer to the two phase legs coming into the building.

Here is what was wrong the machine originally mind you I was promised the machine would be turnkey;
Blown spindle board. I mean cooked!
Two fried re-gen resistors.
Missing gaskets in the pneumatic oil tank and solenoid manifold which provides the air for the air curtain in the spindle.
Bad solenoid which blast air during a tool change.
Missing X axis cover the home made replacement hits the cabinet. It's missing mounting holes and was never affixed by the broker.
Noisy Y axis thrust bearing. The axis seems to be ok the noise isn't getting any loader and the accuracy is still good. But the broker promised to replace it.
Miss Fanuc user manual.
There is much more but what's listed is off the top of my head.
X axis hard over travel switch was stuck.

After fixing the spindle board and re-gen resistors here was the second list of problems.
The machine fired up and would run for 15 minutes then the hydraulics contactor would trip. Mettered all the voltages and currents the draw was 3.7 Amps the breaker maxed out at 4 amps changed it out with a contactor that could be adjusted a little higher in current put it the machine set it to 4.2 amps the pump motor is running at normal temperature, problem solved.

Now the coolant pump contactor trips after 15 minutes just ordered a new contactor for that as well.

I'm looking for the Fanuc owners manual. A schematic for the RS232 cable and a post for Mastercam X2

[powercut]

The oil cooler is on prior to second power-up or ready state, you must have oil pressure from the oil cooler in order to close the pressure switch located on the oil cooler. If the pressure switch is part of the emergency stop circuit. Also there is a red alarm light on the daikin oil coolers that indicates if the oil cooler has a problem, this alarm also does not need the machine to be in the ready state to work and on some machines it is tied into the EMG circuit.

Also a tripped overload or a blown fuse does not nessarily mean that you have a major problem. Since this machine was just moved from another company or location, the overload, breaker or fuse could have blown or tripped during the pack up procedure. Sometimes the Axis fuses or breakers may be tripped if the person packing up the machine overloaded the axis during the clamping process.
If I find a blown fuse, breaker or overload I would check the circuit with my meter but most customer do not have that capability so I would suggest resting the problem and if it happens again contact a service company to troubleshoot the problem.

Powercut

[Pmp Audio]

Hi,

Lucky for me the machine had no blown fuses.

Allot of this the machine sub systems are tided in emergency stop circuit like you said. Like when the contactor circuit breaker trips the Fanuc panel will display a master alarm, flashing lamp and 05 alarm. Definition of the 05 alarm with the Mycenter is a thermal trip usually a contactor.

The two power on states you are referring to are the main turn on (the main breaker switch) The second power cycle is the Fanuc controls?
Basically when I power up the machine I turn the main breaker switch on then press the power button the machine comes right on line (ready state) I can move all the axis turn the spindle on exedra.

I'm thinking the slight off balance of the line voltage is causing the contactor, soft motor start, and breaker to trip after 15 minutes. The theroy makes sense, two legs are on the low side about 196v the third leg is 222 would cuase an unblanced current draw, current follows voltage.

The last item is the Z axis return. Sometimes the axis returns to two dirent locations like a mere 5 thousandths difference. This caused the tool change arm to get stuck under the spindle. To get the arm home consist of PWE override a couple of metallic items to make the controls think the tool change was home to move the Z axis then change the 476 parameter to jog the arm home.

Something's I did figure out on my own but lucky for me there is an amazing tech who once worked for Fanuc in the area.

[powercut]

I guess my last response was being sent the same time as yours.

Sounds like you are having quit an adventure, good luck with it.

If your looking for any other equipment, I sell and service CNC machinery and also stock a lot of used Fanuc and Yasakawa circuit boards. If you need anything you can send me an e-mail at powercut@comcast.net

Al from Powercut