Mitsubishi Electric MELDAS C6 Instruction Manual page 442

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7.1 Operation Alarms (Mxxx)
Details
OVERRIDE ZERO (Override zero)
The cutting feed override switch on the
machine operation panel is set to zero.
EX F SPD ZRO (External feed speed
zero)
The manual feed speed switch on the
machine operation panel is set to zero
when the machine is in the jog mode or
automatic dry run mode.
F1 SPD ZRO (F1-digit speed zero)
The F1-digit feed rate is set to zero when
the F1-digit feed command is being
executed.
SPINDLE STP (Spindle stop)
The spindle stopped during the
synchronous feed command.
HNDL FD NOW (Handle feed axis No.
illegal)
An axis not found in the specifications
was designated for handle feed or the
handle feed axis was not selected.
SPDL RPM EXS (Spindle speed
excessive)
The spindle speed exceeded the axis
clamp speed during the thread cutting
command.
Fixed point mode feed axis No. illegal:
An axis not found in the specifications
was designated for the fixed point mode
feed or the fixed point mode feed rate is
illegal.
BLK ST INTLK (Block start interlock)
An interlock signal that locks the start of
the block has been input.
CTBL ST INTLK (Cutting block start
interlock)
An interlock signal that locks the start of
the cutting block has been input.
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7. List of Alarms
• Set the switch to a value other than
zero to release the error.
• If the switch is set to a value other than
zero‚ check for a short circuit in the
signal wire.
• Check the sequence program.
• Set the switch to a value other than
zero to release the error.
• If the switch is set to a value other than
zero‚ check for a short circuit in the
signal wire.
• Check the sequence program.
• Set the F1-digit feed rate on the setup
parameter screen.
• Rotate the spindle.
• If the workpiece is not being cut‚ start
dry run.
• Check for a broken wire in the spindle
encoder cable.
• Check the connections for the spindle
encoder connectors.
• Check the spindle encoder pulse.
• Check for broken wires in the handle
feed axis selection signal wire.
• Check the sequence program.
• Check the No. of axes listed in the
specifications.
• Lower the commanded spindle speed.
• Check for broken wires in the fixed
mode feed axis selection signal wire
and fixed point mode feed rate wire.
• Check the fixed point mode feed
specifications.
• Check the sequence program.
• Check the sequence program.
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Remedy