YASKAWA UAK series User Manual page 147

7 Wiring
7.2.1 Main Circuit
SERVOPACK for Two Axes
Input Voltage
Three-phase,
200 VAC
Three-phase,
400 VAC
(2) Installing a Molded-case Circuit Breaker
Install a molded-case circuit breaker (MCCB) between the power supply and the main circuit power supply
input terminals (R/L1, S/L2, and T/L3). Always install a molded-case circuit breaker if you do not install a
ground fault detector.
(3) Installing a Ground Fault Detector
Install a ground fault detector between the power supply and the main circuit power supply input terminals (R/
L1, S/L2, and T/L3). Always install a ground fault detector if you do not install a molded-case circuit breaker
(MCCB).
(4) Installing a Magnetic Contactor
Install a magnetic contactor (MC) if you need to turn the control power supply or main circuit power supply
sequence ON and OFF.
(5) Terminal Block Connection Sequence
You can connect the main circuit power supply terminals in any order without considering the phase order (R/
L1, S/L2, T/L3).
(6) Installing a Surge Absorber
Always install surge absorbers or diodes on all inductive loads that are connected near the Σ-V-SD servo
driver. (Inductive loads include magnetic contactors, magnetic relays, magnetic valves, solenoids, and mag-
netic brakes.)
7-22
Model: Terminal
CACR-JUM2 Symbols
U, V, W
3ACA
motor
U, V, W
4ACA motor
U, V, W
5ACA motor
U, V, W
3DCA
motor
U, V, W
4DCA motor
U, V, W
5DCA motor
• Never connect a surge absorber to the output terminals (U, V, and W) from the SER-
VOPACK.
• Always install surge absorbers. If you do not install surge absorbers, the surge voltage
from the coil that occurs when the inductive load is turned ON and OFF will affect the
SERVOPACK control signal lines and could cause incorrect signals.
Tightening
Terminal Screw
Torque [N m]
(connector) –
(connector) –
M4 1.2 to 1.4
(connector) –
(connector) –
M4 1.2 to 1.4
(connector) –
(connector) –
M4 1.2 to 1.4
(connector) –
(connector) –
M4 1.2 to 1.4
(connector) –
(connector) –
M4 1.2 to 1.4
(connector) –
(connector) –
M4 1.2 to 1.4
Wire Sizes
AWG14
AWG14
AWG14
AWG10
AWG10
AWG10
AWG8
AWG8
AWG8
AWG14
AWG14
AWG14
AWG14
AWG14
AWG14
AWG14
AWG14
AWG14