Yaskawa Large Capacity Sigma II Series - Manual (Page 45)

2 Basic Operation
2.3.2 Main Circuit Wiring and Power ON Sequence
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2.3.2 Main Circuit Wiring and Power ON Sequence
This section shows typical examples of main circuit wiring for Σ-II Series servo products,
functions of main circuit terminals, and the power ON sequence.
„ 400-V Power Supply
• SERVOPACK Main Circuit Terminal Names and Descriptions
The following table shows the name and description of each main circuit terminal.
Table 2.1 SERVOPACK Main Circuit Terminals
Terminal
Symbol
Functions Description
L1/R, L2/S,
L3/T Main power input terminals
Three-phase 380 to 480 VAC , 50/60 Hz
U, V, W Servomotor connection
terminal Used to connect to the servomotor.
DC24P,
DC24N Control power input terminal 24 VDC ± 15 %
(Two)
Ground terminal Connected to ground.
(For power ground and motor ground)
+1, +2 DC reactor connection termi-
nal Used to protect against harmonics
(factory setting: short-circuited)
B1, B2 Regenerative Resistor Unit
connection terminal Used to connect the regenerative resistor.
480 V, 460 V,
440 V, 400 V,
380 V, 0 V Input terminals for control
actuator Single-phase 380 to 480 V, 50/60 Hz
Power supply input terminals for the fan and the contac-
tor.
− Main circuit minus terminal Normally, external connection is not required.
DU, DV, DW Dynamic Brake Unit
connection terminal Used to connect the Dynamic Brake Unit.
DBON, DB24 Dynamic Brake Unit connec-
tion terminal Used to connect the Dynamic Brake Unit to the DBON
and DB24 terminals (when using 37-kW and 55-kW
SERVOPACKs only).
% +10
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