Use this recovery only when an MX60HB power interruption leaves the automatic tool changer (ATC) arm stopped mid-cycle. The procedure temporarily enables parameter access, realigns the mechanism through the machine-axis screen, and then restores the temporary parameter. Record every original value before editing; the available evidence does not identify the control model or software version.
Confirm the recovery condition
Place the machine in manual mode. This procedure addresses an ATC arm that stopped halfway during a power failure; it is not a general response for every power-loss condition. The documented alarm sequence includes 2347 B axis interlock and an associated 72 indication, but the evidence does not define their precise control-specific meanings.
Enable the temporary recovery settings
- Open the parameter interface and use the TEM keys to locate NC OPTIONAL PARAMETER (BIT).
- Go to row 16. If bit 1 is 0, change it to 1.
- Locate MC USER PARAMETER (WORD) and go to number 40. This menu name corrects the original description, which incorrectly identified it as an NC user parameter.
- Apply the documented recovery entry involving bit 1 and the value 72. The source wording does not establish whether 72 is written directly to number 40 or through a separate set/write field; confirm the field layout on the installed control before committing the change.
Realign the ATC mechanism
- Use the TEM keys to open PARAMETER SET MACHINE AXIS DATA MX TS.
- Switch the machine to pulse-handle mode and press the tool-change-cycle key.
- Select the X position with the handwheel and move until ACT POSIT MX TS reads 0.000.
- If a tool remains in the spindle, perform the required manual unclamp and clamp operation.
The evidence notes that the method for vertical machines is comparable to the MX45 procedure, but it does not provide enough control or machine details to establish direct compatibility.
Restore parameters and verify recovery
- Return to the parameter entry where 72 was applied and set it back to 0.
- Press reset and verify that the alarm clears.
- Open MC SYSTEMPARAMETER with the TEM keys and set the documented ATC SPENCE number to 1. The evidence does not identify a separate parameter number, so verify the label exactly on the installed control.
- Confirm that the ATC is no longer left mid-cycle and that all temporarily changed values have been restored as documented.
FAQ
When should I use the MX60HB ATC power-failure procedure?
Use it when a power interruption leaves the ATC arm stopped halfway through its cycle. Do not treat it as a universal recovery for unrelated power-loss alarms.
Is parameter 40 in NC USER or MC USER parameters?
Use MC USER PARAMETER (WORD), number 40. The NC USER description was explicitly corrected in the available evidence.
What position completes the MX60HB ATC realignment?
In pulse-handle mode, select X with the handwheel and bring ACT POSIT MX TS to 0.000. Then restore the temporary 72-related entry to 0 and press reset.
