Example Power Circuit Connections; 200 V Class - Mitsubishi Electric MELSERVO MR-J5 Series User Manual

3.1

Example power circuit connections

Precautions
• To prevent a fire, install a molded-case circuit breaker or fuse to the main circuit power supply (L1/L2/L3) of a servo
amplifier.
• Connect a magnetic contactor between a power supply and the main circuit power supply (L1/L2/L3) of a servo amplifier to
configure a circuit that shuts off the main circuit power supply of the servo amplifier when a malfunction or alarm of the
servo amplifier occurs.
• Use a configuration that shuts off the main circuit power supply with ALM (Malfunction).
• Check the servo amplifier model and use the correct power supply voltage.
• Exogenous noise or lightning surges may degrade the characteristics of the surge absorber (varistor) built into the servo
amplifier and damage it.
• Do not shut off the control circuit power supply even if an alarm occurs. If the control circuit power supply is shut off,
network communication will be interrupted.
• In the torque mode, EM2 functions the same as EM1.
• If using the MR-J5 servo amplifier with the DC power supply input, refer to the following.
Page 51 Using servo amplifier with DC power supply input
• To prevent malfunction, avoid bundling the servo amplifier's power lines (input/output) and signal cables together or running
them parallel to each other. Separate the power lines from the signal cables.
• Provide adequate protection to prevent an unexpected restart after an instantaneous power failure.
• Configure wiring so that the main circuit power supply is shut off and the servo-on command is turned off after deceleration
to a stop due to an alarm occurrence, an enabled servo forced stop, or a quick stop command from the controller. Use a
molded-case circuit breaker (MCCB) with the input cables of the main circuit power supply.
• When insulating the main circuit power supply (L1/L2/L3) and the control circuit power supply (L11/L21) of the servo
amplifier using an isolation transformer, etc., connect between L1 and L11 and between L2 and L21 at equipotential.

200 V class

For 3-phase 200 V AC to 240 V AC power supply (1-axis servo amplifier)
3-phase
200 V AC to
*9
240 V AC
3 SIGNALS AND WIRING
44
3.1 Example power circuit connections
Servo motor
overheat
*4
Malfunction
protection
RA1 RA2
MCCB
*6
MC
*7
*13
*11
OFF
Emergency stop switch
Servo amplifier
*12
CNP1
L1
*8
CNP3
L2 U
L3 V
N- W
*1
P3
P4
CNP2
*2
P+
C
D
*8
CN2
L11
L21
*10
ON
MC
MC
SK
Servo motor
*5 *3
U
V
W
E
Motor
M
Encoder