7 Wiring
7.2.1 Main Circuit
7-22
SERVOPACK for Two Axes
(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 co nnect t he main c ircuit po wer sup pl y termi na ls in a ny or de r w it ho ut cons id ering t he phas e 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.)
Input Voltage
Model:
CACR-JUM2
Ter mi na l
Symbols
Ter mi na l Sc re w
Tightening
To rq ue [ Nxm]
Wire Sizes
Three-phase,
200 VAC
3ACA
U, V, W (connector) – AWG14
motor
(connector) – AWG14
M4 1.2 to 1.4 AWG14
4ACA
U, V, W (connector) – AWG10
motor
(connector) – AWG10
M4 1.2 to 1.4 AWG10
5ACA
U, V, W (connector) – AWG8
motor
(connector) – AWG8
M4 1.2 to 1.4 AWG8
Three-phase,
400 VAC
3DCA
U, V, W (connector) – AWG14
motor
(connector) – AWG14
M4 1.2 to 1.4 AWG14
4DCA
U, V, W (connector) – AWG14
motor
(connector) – AWG14
M4 1.2 to 1.4 AWG14
5DCA
U, V, W (connector) – AWG14
motor
(connector) – AWG14
M4 1.2 to 1.4 AWG14
• 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.
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