What causes Okuma OSP alarm 8584?

M98/M99 commanded while the spindle is still rotating. M98/M99 commanded while the M-tool spindle is still rotating. M98/M99 commanded while the C-axis is still rotating. M98/M99 commanded with NC tailstock teaching mode ON. Command issued on a machine without the NC tailstock high/low thrust specification.

How do I fix Okuma OSP alarm 8584?

1. Read the code number shown with the alarm: code 1 = M98/M99 designated while the spindle is not stopped.; code 2 = M98/M99 designated while the M-tool spindle is not stopped.; code 3 = M98/M99 designated while the C-axis is not stopped.; code 4 = M98/M99 designated while NC tailstock teaching mode is ON.; code 5 = M98/M99 designated on a machine without the NC tailstock high/low thrust specification. 2. Read the code: 1 spindle not stopped; 2 M-tool spindle not stopped; 3 C-axis not stopped; 4 NC tailstock teaching mode ON; 5 machine has no NC tailstock high/low thrust specification. 3. For codes 1-3, stop the relevant spindle or C-axis (M05 or equivalent) and confirm zero speed before issuing M98/M99. 4. For code 4, exit NC tailstock teaching mode before commanding the high/low thrust change. 5. For code 5, remove M98/M99 from the program because this machine has no NC tailstock high/low thrust specification; use the manual thrust change procedure instead. 6. Re-run the tailstock thrust change sequence in single block and confirm each precondition is met before M98/M99 executes.

Okuma OSP codes

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Okuma OSP Controller

Safety · Intermediate

Alarm 8584

Okuma OSP Alarm A 8584 - Tailstock high/low change interlock

A tailstock high/low thrust change command (M98/M99) was designated while a spindle, M-tool spindle or C-axis was still rotating, while NC tailstock teaching mode was ON, or on a machine without the NC tailstock high/low thrust specification. The interlock prevents changing tailstock thrust under unsafe conditions.

Okuma OSPSafetyIntermediate

8584

Okuma OSP Alarm A 8584 - Tailstock high/low change interlock

Tailstock high/low change interlock

Common Causes

M98/M99 commanded while the spindle is still rotating
M98/M99 commanded while the M-tool spindle is still rotating
M98/M99 commanded while the C-axis is still rotating
M98/M99 commanded with NC tailstock teaching mode ON
Command issued on a machine without the NC tailstock high/low thrust specification

Troubleshooting Steps

1Read the code number shown with the alarm: code 1 = M98/M99 designated while the spindle is not stopped.; code 2 = M98/M99 designated while the M-tool spindle is not stopped.; code 3 = M98/M99 designated while the C-axis is not stopped.; code 4 = M98/M99 designated while NC tailstock teaching mode is ON.; code 5 = M98/M99 designated on a machine without the NC tailstock high/low thrust specification.
2Read the code: 1 spindle not stopped; 2 M-tool spindle not stopped; 3 C-axis not stopped; 4 NC tailstock teaching mode ON; 5 machine has no NC tailstock high/low thrust specification.
3For codes 1-3, stop the relevant spindle or C-axis (M05 or equivalent) and confirm zero speed before issuing M98/M99.
4For code 4, exit NC tailstock teaching mode before commanding the high/low thrust change.
5For code 5, remove M98/M99 from the program because this machine has no NC tailstock high/low thrust specification; use the manual thrust change procedure instead.
6Re-run the tailstock thrust change sequence in single block and confirm each precondition is met before M98/M99 executes.

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