Chapter 3 Environment description and installation
3-24
3.8 Installation and design consideration
Note 1. Common bus connections from a common input power supply as shown above.
Note 2. When connecting a drive or drives’ DC bus connections in parallel with larger. Hp rated
drives, use a magnetic contactor with the ⊕&⊖ terminals, otherwise, inverter damage can
result.
Note: If ⊕⊖ terminal block be used, please take off the TB label as shown below.
Common bussing of drives allow
for load-sharing and therefore
can save energy. Adding a
braking unit to improve brake
capacity is also acceptable.
must power on the same time
Figure 3-21 Common bus configurations
‘⊕’
connection
‘⊖’ connection
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