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Mitsubishi Electric MDS-B-SPJ2 Series Specification Manual page 5

Ac spindle drive unit
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(2) Wiring
Correctly and securely perform the wiring. Failure to do so could lead to runaway of the spindle
motor.
Do not install a phase advancing capacity, surge absorber or radio noise filter (option FR-BIF) on the
output side of the spindle amplifier.
Correctly connect the output side (terminals U, V, W). Failure to do so could lead to abnormal
operation of the spindle motor.
Do not directly connect a commercial
power supply to the spindle motor. Doing
so could lead to faults.
Do not mistake the orientation of the
surge absorption diode to be installed on
the DC relay for contactor and motor
break output signals.
(3) Trial operation and adjustment
Check each parameter before starting operation. Failure to do so could lead to unforeseen operation
of the machine.
Do not make remarkable adjustments and changes as the operation could become unstable.
(4) Usage methods
Install an external emergency stop circuit so that the operation can be stopped immediately and the
power can be shut off.
Never disassemble or repair the unit.
The operation will suddenly restart if a reset (RST) is carried out while an operation start signal
(ST) is being input. Therefore, always confirm that the operation signal is OFF before resetting
(RST). Failure to observe this could result in accidents.
Never make modifications.
Reduce the influence of electromagnetic interference by using a noise filter, etc. The electronic
devices used near the spindle amplifier could be affected by magnetic noise.
Use the spindle motor and spindle amplifier with the designated combination.
Install a stop device for ensuring safety on the machine side.
CAUTION
Servo amplifier
(24VDC)
Control output signal
CAUTION
CAUTION
COM
R A
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