2. Wiring and Connection
2 - 32
2-5 Connection of power supply
CAUTION
1. Make sure that the power supply voltage is within the specified range of the
servo drive unit. Failure to observe this could lead to damage or faults.
2. For safety purposes, always install a circuit breaker (CB), and make sure that
the circuit is cut off when an error occurs or during inspections. Refer to
Chapter 7 and select a circuit breaker.
3. The wire size will differ according to each drive unit capacity. Refer to
Chapter 7 and select the size.
4. For safety purposes, always install a magnetic contactor (contactor) on the
main circuit power supply input. Large rush currents will flow when the power
is turned ON. Refer to Chapter 7 and select the correct contactor.
5. A semiconductor element is used in the power supply unit's magnetic contact
drive circuit. A surge absorber is installed to protect the element, and a
leakage current of approx. 15mA is passed. Confirm that the exciting coil in
the magnetic contact will not function at 15mA or less.
2-5-1 Standard connection
Directly drive the contactor using the power supply unit's TE3 terminal (MC1)
(1) For MDS-C1-CV-370 or smaller
MC
L1
L2
L3
MC1
TE1
L21
L11
TE3
TE2
L+
L-
L21
L11
TE3
TE2
L+
L-
R
S
T
No-fuse
Breaker
Ground
Ground
AC reactor
Ground
L21
L11
MDS-C1-V1/V2
TE3
TE2
L+
L-
Ground
CN4 CN4
Breaker
:
CAUTION
1. The power supply unit is a power supply regenerative type converter; an AC
reactor is installed in the power supply line. When connecting to the TE3
terminal, connect to the power supply side (primary side) of the AC reactor.
2. Connect the power supply unit's CN4 connector with the spindle drive unit in
the same system. If there is no spindle drive unit, connect to the servo drive
unit which is the last axis.
3. When distributing and installing the units, always arrange the power supply
unit and spindle drive as a set. Keep the total length of the TE2 wire as short
as possible (50cm or less).
Magnetic
contacto
MDS-C1-CV
(37.0kW or less)
fter 0rpm confirm
Main circuit connection
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