Mitsubishi Electric MDS-E Series Instruction Manual page 126

MDS-E/EH Series Instruction Manual
2 Wiring and Connection
(3) Wiring
The illustration below shows the 2 types of changeover that occur after a coil changeover, (a)
changeover, and (b)
ON and the other is turned OFF at all of the coil changeover control circuits.
(a) (star) - Δ(delta) changeover circuit
Spindle
drive unit
MC1: Contactor to connect low-speed coil (
MC2: Contactor to connect high-speed coil (Δ-connection)
<Wiring of motor coil>
U
V
W
Spindle
drive unit
The terminal which is assembled
:
at the contactor ON
connection (MC1:ON MC2:OFF)
POINT
Wire it according to each 6 terminal's sign (U, V, W, X, Y, Z) of spindle motor for the coil changeover.
(star)- (star) changeover. As shown in (c), one of the contactors (MC1 or MC2) is turned
U
V
W
MC2
MC1
-connection)
Coil changeover circuit
U
X
Y Z
V W
Motor
terminal
U
V
W
X
Y
Z
Spindle motor
U
V
W
Spindle
drive unit
X
V
:The terminal which is assembled
at the contactor ON
∆connection (MC1:OFF MC2:ON)
95
(star) - Δ(delta)
U Z
W
Y
IB-1501229-F