[VALBYRNES]

HI.
WE HAD A PROBLEM WITH BROKEN TEETH ON OUR CURVIC COUPLING AND IDLE GEAR

WE REPLACED THE SET AND NOW WE ARE GETTING INTERMITTANT 2047 ALARMS

ALSO WHEN WE UNCLAMP TURRET WITH K5.4 IT IS UNDER SEVERE PRESSURE FROM THE SERVO MOTOR WHEN TRYING TO ROTATE BY HAND

AND WHEN INDEXING IN MANUAL MODE THERE SEEMS TO BE A LOT OF BACKLASH

ANY HELP WOULD BE APPRECIATED.

[dhardt]

HI.
WE HAD A PROBLEM WITH BROKEN TEETH ON OUR CURVIC COUPLING AND IDLE GEAR

WE REPLACED THE SET AND NOW WE ARE GETTING INTERMITTANT 2047 ALARMS

ALSO WHEN WE UNCLAMP TURRET WITH K5.4 IT IS UNDER SEVERE PRESSURE FROM THE SERVO MOTOR WHEN TRYING TO ROTATE BY HAND

AND WHEN INDEXING IN MANUAL MODE THERE SEEMS TO BE A LOT OF BACKLASH

ANY HELP WOULD BE APPRECIATED.

2047 is a timout alarm: It just says that something took too long.

The timeline for a servo-turret index is as follows:
1. M6 or Manual turret request given
2. Machine in proper mode and no alarms
3. Ladder Compare if X=Y (if command is same as current position, give complete, else continue.
4. Fanuc Output (Y) 24vdc from I/O board for Curvic Unclamp
5. Wires carry current to Curvic Unclamp coil
6. 24vdc energizes relay coil for unclamp
7. Relay contacts activate
8. Fanuc control sends signal to Vision control, stiffening Vision Servo
A. Vision Servo stiffens turret
9. Voltage waiting at common contact sends current through wire to Curvic Unclamp solenoid.
10. Voltage energizes solenoid coil
11. Hydraulic pressure waiting at valve's Pressure supply port.
12. Solenoid coil's magnetic field causes Curvic Unclamp valve's spool to shift
13.Hydraulic pressure charges hose to Curvic Unclamp piston
14. Curvic Unclamp causes pressure against seals and shifts into unclamp position
15.(on most machines) Curvic Unclamping allows a springloaded rod to slide away from the Curvic Clamped Proximity switch
16. Proximity switch SIGNAL line goes low
17. Fanuc I/O sees signal go low.
18. Fanuc control sends binary code to Vision control (position to index to, and command to rotate)
B. Vision Control moves required encoder pulses.
C. Vision control lands turret back onto a VPF position (Verify Position Flag)
D. Vision control stiffens and awaits a signal
19. Fanuc Output (Y) 24vdc from I/O board for Curvic Unclamp is dropped
20. Wires de-energize to Curvic Unclamp coil
21. 24vdc de-energizes relay coil for unclamp
22. Relay contacts open
23. Voltage stopped to Curvic Unclamp solenoid.
24. Solenoid coil's magnetic field colapses causing Curvic Clamp side of valve's spool to shift
25.Hydraulic pressure charges hose to Curvic Clamp piston
26. Curvic Clamp causes pressure against seals and shifts into Clamp position
27.(on most machines) Curvic Clamping allows a springloaded rod to slide toward the Curvic Clamped Proximity switch
28. Proximity switch SIGNAL line goes High
29. Fanuc I/O sees signal go High.
30. Fanuc control sends signal to Vision control, relaxing Vision Servo


At any point between #4 and #29 a 2047 can occur.


Severe Pressure is likely caused by incorrect assembly as K5.4 allows"free-wheeling" rotation of the turret.
"a lot of backlash" = check assembly...Curvic engaged = Zero Backlash / Curvic disengaged = Free rotation

Note: when re-engaging the curvic, it should engage with a slight "pull" in rotation (a slight "pulling" signifies "slope to slope" interaction of the curvic. "Flat to flat" interaction might allow incorrect clamping)

Call Doosan Service if you need to discuss further.

(973) 618-2500

[dhardt]

Please forgive me. I've made a mistake.

2047 is a TURRET CONTRL. UNIT EMG.STOP ALARM: (2023 is a timout alarm: It just says that something took too long

The timeline for a servo-turret index is as follows:
1. M6 or Manual turret request given
2. Machine in proper mode and no alarms
3. Ladder Compare if X=Y (if command is same as current position, give complete, else continue.
a. If machine has a Live Milling equipped:
i. Orient live tool
ii. Confirm Fixing cam is engaged.
4. Fanuc Output (Y) 24vdc from I/O board for Curvic Unclamp
5. Wires carry current to Curvic Unclamp coil
6. 24vdc energizes relay coil for unclamp
7. Relay contacts activate
8. Fanuc control sends signal to Vision control, stiffening Vision Servo
A. Vision Servo stiffens turret
9. Voltage waiting at common contact sends current through wire to Curvic Unclamp solenoid.
10. Voltage energizes solenoid coil
11. Hydraulic pressure waiting at valve's Pressure supply port.
12. Solenoid coil's magnetic field causes Curvic Unclamp valve's spool to shift
13.Hydraulic pressure charges hose to Curvic Unclamp piston
14. Curvic Unclamp causes pressure against seals and shifts into unclamp position
15.(on most machines) Curvic Unclamping allows a springloaded rod to slide away from the Curvic Clamped Proximity switch
16. Proximity switch SIGNAL line goes low
17. Fanuc I/O sees signal go low.
18. Fanuc control sends binary code to Vision control (position to index to, and command to rotate)
B. Vision Control moves required encoder pulses.
C. Vision control lands turret back onto a VPF position (Verify Position Flag)
D. Vision control stiffens and awaits a signal
19. Fanuc Output (Y) 24vdc from I/O board for Curvic Unclamp is dropped
20. Wires de-energize to Curvic Unclamp coil
21. 24vdc de-energizes relay coil for unclamp
22. Relay contacts open
23. Voltage stopped to Curvic Unclamp solenoid.
24. Solenoid coil's magnetic field colapses causing Curvic Clamp side of valve's spool to shift
25.Hydraulic pressure charges hose to Curvic Clamp piston
26. Curvic Clamp causes pressure against seals and shifts into Clamp position
27.(on most machines) Curvic Clamping allows a springloaded rod to slide toward the Curvic Clamped Proximity switch
28. Proximity switch SIGNAL line goes High
29. Fanuc I/O sees signal go High.
30. Fanuc control sends signal to Vision control, relaxing Vision Servo


At any point between #4 and #17 a 2047 can occur. ( At any point between #4 and #29 a 2023 can occur.)



Severe Pressure is likely caused by incorrect assembly as K5.4 allows"free-wheeling" rotation of the turret.
"a lot of backlash" = check assembly...Curvic engaged = Zero Backlash / Curvic disengaged = Free rotation

Note: when re-engaging the curvic, it should engage with a slight "pull" in rotation (a slight "pulling" signifies "slope to slope" interaction of the curvic. "Flat to flat" interaction might allow incorrect clamping)

Call Doosan Service if you need to discuss further.

(973) 618-2500