Hawk 150, acramatic, servo motor rapids like mad on startup
Hi all.
I have cinncinati Hawk 150 with acramatic a2100, vickers drives.
On startup it passes all diagnostics, then waits for the green button to power up hydraulics and servos.
Once I press it, hydraulic pump start, vickers drivers for x and z start, 3 Led's turn green.
https://youtu.be/VmvY90HLZtc
https://youtu.be/HRwArwe-HcE
X axis servo motor rapids down excessively, causing machine to shake, and errors X axis servo fail, X axis servo error.
Can anyone suggest me where to start?
All the best
Tom Spiszak
Re: Hawk 150, acramatic, servo motor rapids like mad on startup
Has this machine been running and no changes have been made??? Do you get an open loop error?? Have any wires or motors been changed?? Give us more history.
MIKE CNC Machine Services INC | Cincinnati Milacron MachinesCNC Machine Services
Re: Hawk 150, acramatic, servo motor rapids like mad on startup
Hi.
https://youtu.be/LHZdl66I66c
Limit switches are good.*
Can I swap servo drives from z to x just to eliminate x servo drive error? They are slightly different , on x is bds4 206 23 412w32 and on z *bds4 210 23 414w25.
"may be a relay or a switch thats stuck on the x axis curcuit" -*don't know where to look for one.
If I had optical scale on x, would it cause it to rapid?
Thank you
Tom
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Re: Hawk 150, acramatic, servo motor rapids like mad on startup
That's not a rapid at all. That's the drive thinking it's ready, and the x axis brake releasing.
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Re: Hawk 150, acramatic, servo motor rapids like mad on startup
Hi. I dont think brake release would cause machine to shake, also there's about 400V on servo drive output.
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Re: Hawk 150, acramatic, servo motor rapids like mad on startup
If you have proper voltage, not that just having voltage is always correct, the motor windings may be failed. It certainly looks like typical axis drop from the amp or motor not holding torque.
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Re: Hawk 150, acramatic, servo motor rapids like mad on startup
Would you advise to get another servo drive?
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Re: Hawk 150, acramatic, servo motor rapids like mad on startup
Hi. I swapped the servo drive from z to x and it's still doing the same thing. Measured the resistance on the motor, then thru cables, it shows around 5ohm between phases. Same as z axis.
What am I missing here.
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Re: Hawk 150, acramatic, servo motor rapids like mad on startup
The motor wires are phase sensitive (6 poles), make sure the 3 wires at the drive are in the correct position.
MIKE CNC Machine Services INC | Cincinnati Milacron MachinesCNC Machine Services
Re: Hawk 150, acramatic, servo motor rapids like mad on startup
Hi. Thank you for your reply. There's Ma Mb and Mc on the drive, cable has writing on 1,2,3. So a1, bo,c3.
I swapped the drives and it's still happening. So the problem has to be between drive and motor itself.
I disconnected motor power (3 fases) and it did an axis drop but slower, like brake release and then alarmed.
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