Three-Phase 400 V Class Models 4A0930, 4A1200; 12-Pulse Rectification - YASKAWA A1000 Series Quick Start Manual

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Three-Phase 400 V Class Models 4A0930, 4A1200

Note: Models 4A0930 and 4A1200 are compatible for operation with 12-pulse rectification.
details.
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12-Pulse Rectification

n Removing the Jumper
Models 4A0930 and 4A1200 are compatible for operation with 12-pulse rectification. Operation with 12-pulse 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-pulse
rectification may cause death or serious injury by fire.
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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
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
+3
+1
Relay
DC link
choke
R/L1
S/L2
+
T/L3
R1/L11
S1/L21
T1/L31
–
24 V
Power Gate board
Supply
Figure 3.6 Connecting Main Circuit Terminals
Figure 3.7 to operate with 12-pulse rectification.
Jumper
R1/L11
R/L1
S/L2
Figure 3.7 Removing the Jumper
3.2 Main Circuit Connection Diagram
Current
sensor
U/T1
V/T2
W/T3
Control
Operator
board
Refer to 12-Pulse Rectification on page 85
S1/L21
T1/L31
T/L3
for
3
85