Yaskawa AC Drive-P1000 Industrial Fan - Manual (Page 73)

u Three-Phase 400 V Class Models 4A0930, 4A1200
+1
–
R/L1
S/L2
T/L3
R1/L11
S1/L21
T1/L31
U/T1
V/T2
W/T3
+3
+
24 V
Power
Supply
DC link
choke
Relay
Gate board
Control
board
Operator
Current
sensor
Figure 3.6 Connecting Main Circuit Terminals
Note: Models 4A0930 and 4A1200 are compatible for operation with 12-phase rectification. Refer to 12-Phase Rectification on page 73 for
details.
u 12-Phase Rectification
n Removing the Jumper
Models 4A0930 and 4A1200 are compatible for operation with 12-phase rectification. Operation with 12-phase rectification
requires the user to separately prepare a 3-winding transformer for the power supply. Contact Yaskawa or your nearest sales
representative for transformer specifications.
WARNING! Fire Hazard. Failure to remove jumpers shorting the power supply terminals on the main circuit when operating with 12-phase
rectification may cause death or serious injury by fire.
n Application Notes
Models 4A0930 and 4A1200 are shipped from the factory with jumpers short-circuiting terminals R/L1-R1/L11, S/L2-S1/
L21, and T/L3-T1/L31.
Remove M5 screws and jumpers as shown in
Figure 3.7 to operate with 12-phase rectification.
R1/L11
Jumper
R/L1
S/L2
T/L3
T1/L31
S1/L21
Figure 3.7 Removing the Jumper
3.3 Main Circuit Connection Diagram
YASKAWA SIEP YAIP1U 01B AC Drive - P1000 Technical Manual 73
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Electrical Installation