Drive & Motor Connections; Motor Terminal Box Connections - ABB ACS255 User Manual

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5.4. Drive & Motor Connections
For 1 phase supply, power should be connected to L1/L, L2/N. For 3 phase supplies power should be connected to L1, L2, L3. Phase sequence
is not important. The Motor should be connected to U, V, W
For drives that have a dynamic brake transistor an optional external braking resistor will need be connected to +DC and BR when required.
The brake resistor circuit should be protected by a suitable thermal protection circuit. The "–DC", "+" and "BR" connections are blanked off by
plastic tabs when sent from the factory. The plastic tabs can be removed if/when required.
Size 1 Connections
Size 2 & 3 Connections

5.5. Motor Terminal Box Connections

Most general purpose motors are wound for operation on dual voltage supplies. This is indicated on the nameplate of the motor. This
operational voltage is normally selected when installing the motor by selecting either STAR or DELTA connection. STAR always gives the higher
of the two voltage ratings. Example Motor nameplate shown below (380V Delta illustrated):
IP20
IP20
IP66 (Nema 4X)
IP66 (Nema 4X)