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The switch sequence in spindle switching/speed range switching operation is abnormal. The switching MCC contact status check signal and command do not match.
1 Check and correct the ladder sequence.2 Replace the switching MCC.
Spindle Amplifier indication 15
NOTE*1 Note that the meanings of the Spindle Amplifier indications differ depending onwhich LED, the red or yellow LED, is on. When the red LED is on, the SpindleAmplifier indicates a 2-digit alarm number. When the yellow LED is on, theSpindle Amplifier indicates an error number that designates a sequence problem(for example, when a rotation command is entered with the emergency stopstate not released).See “Error Codes (Serial Spindle).”*2 For serial spindle alarms with a number not listed, refer to the followingdocuments depending on the spindle motor to which a connection is actuallymade.
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