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Chapter 7 Installation
7–9
7-2-5 Main circuit connection
CAUTION
1. Always provide Class 3 grounding or higher for the servo drive unit and
servomotor.
2. Correctly connect the power phases (U, V, W) of the servo drive unit and
servomotor. Failure to do so could cause the servomotor to abnormally
operation.
3. Do not apply a non-designated voltage on each terminal. Failure to observe
this could lead to ruptures or trouble.
MC
NF
For control circuit power supply (RS)
Servo drive unit
(one axis)
MDS-B-V14L
Spindle drive unit
(one axis)
MDS-B-SP
Power supply
unit
MDS-B-CV
Linear servomotor primary side
Linear scale
Detector cable
L+
L–
L11
L21
UVW
L1 L2 L3
Spindle motor
UV W
MC
3ø 200VAC for
main circuit
power supply
50/60Hz
Contactor
R
S
T
AC reactor
Cabinet
ground-
ing