Mitsubishi Electric M800VS Series Connection And Set Up Manual page 258

M800VS/M80V Series Connection and Setup Manual
7 Connection of Control Unit
7.6 Connecting with Drive Unit
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
cable 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 "When Using One Power Supply Unit" above.
Connections when using two power supply units within a single NC communication bus system
MDS-E/EH-V2
1st/2nd axis
Connected
to the NC
Optical
communication
cable
CAUTION
(1) The NC communication bus connection for the drive unit receiving power (L+, L-) from each power supply unit
must be connected to the NC side of the power supply unit.
(2) If two or more power supply units are connected in the drive system, confirm that the units are not connected
with each other through the L+ and L- lines before turning ON the power.
Also make sure that the total capacity of the drive units connected to the same power supply unit meets the
unit's selected capacity.
MDS-E/EH-V2 MDS-E/EH-CV
[1]
3rd/4th axis
(CV control axis)
CN4
CN4
MDS-E/EH-V1 MDS-E-SP2
5th axis 6th/7th axis
Power
cannot be
supplied
227
MDS-E/EH-SP MDS-E/EH-CV
8th axis [2]
(CV control axis)
CN4
CN4
IB-1501613-A