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2. Wiring and Connection
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(2) When using two or more power supply units within a single NC communication bus system
Two or more power supply units may be required within a single NC communication bus system if
the spindle drive unit capacity is large. The drive unit receiving power (L+, L-) from each power
supply unit must always have NC communication bus connection at the NC side of each power
supply unit. In the NC communication bus connection example below, power supply [1] cannot
supply power (L+, L-) to the 5th axis servo drive unit.
For basic connection information, refer to "(1) When using one power supply unit".
Connections when using two power supply units within a single NC communication bus system
CAUTION
The drive unit receiving power (L+, L-) from each power supply unit must always
have NC communication bus connection at the NC side of each power supply
unit.
CN1A
SH21 cable
MDS-C1-SP
6th axis
(CV control axis)
MDS-C1-V1
5th axis
Connected
to the NC
MDS-C1-CV
[2]
MDS-C1-V2
1st/2nd axis
CN1B CN1A
CN1B
CN1A
CN1B
CN1A
CN1B
CN4
CN4
CN4
CN4
MDS-C1-V2
3rd/4th axis
(CV control axis)
MDS-C1-CV
[1]
Power
cannot be
supplied