Yaskawa A1000 6-Phase/12-Pulse Input - Manual (Page 26)

4 Start-Up Programming & Operation
u Powering Up the Drive
Review the following checklist before applying power.
Item to Check Description
Power supply
6-Phase/12-Pulse Isolated 380 to 480 Vac 50/60 Hz, 30 electrical degrees phase-shifted each phase
Properly wire the power supply input terminals (R/L1, S/L2, T/L3, R1/L11, S1/L21, T1/L31).
<1>
Check for proper grounding of drive and motor.
Drive output terminals and
motor terminals
Properly wire drive output terminals U/T1, V/T2, and W/T3 with motor terminals U, V, and W.
Control circuit terminals Check control circuit terminal connections.
Drive control terminal status Open all control circuit terminals (off).
Status of the load and connected
machinery
Decouple the motor from the load.
<1> Install a 6-Phase/12-Pulse isolation transformer with each of the output windings phase-shifted by 30 electrical degrees or use a Hybrid 6-Phase
topology.
4 Start-Up Programming & Operation
26 YASKAWA TOEP YAIA1U 02A YASKAWA AC Drive – A1000 6-Phase/12-Pulse Input Installation Manual