Chapter 3 Signals And Wiring - Mitsubishi Electric MELSERVO MR-J5 Series User Manual

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SIGNALS AND WIRING
Precautions
• When using a linear servo motor, the terms below have the following meanings.
Load to motor inertia ratio → Load to motor mass ratio
Torque → Thrust
• Insulate the conductive parts of the terminals.
• Turn off the power and wait for 15 minutes or more until the charge light of the servo amplifier turns off. Checking the
voltage between P+ and N- using the tester, etc. is recommended.
• If using a regenerative resistor, configure a circuit that shuts off the main circuit power supply with an alarm signal because
abnormal overheating of the regenerative resistor may cause smoke and fire.
• To prevent failure and malfunction, only the power supply/signal specified in the user's manual should be connected to a
corresponding terminal.
• To prevent unexpected operation of the servo motor, wire the equipment correctly and securely.
• Make sure to connect the cables and connectors by using the fixing screws and the locking mechanism. Otherwise, the
cables and connectors may be disconnected during operation.
• Unless stated otherwise, all connection diagrams in this user's manual are sink interface diagrams.
• Install a surge absorbing diode in the correct direction. Failing to do so may cause the amplifier to malfunction and not to
output signals, disabling protective circuits such as the emergency stop.
Servo amplifier
24 V DC
DOCOM
Control output
signal
For sink output interface
• If the wires are not properly secured to the terminal block, the poor contact may cause the wires and terminal block to
generate heat. Make sure to secure the wires with the specified torque.
• Connecting the servo motor for an incorrect axis to the power outputs (U/V/W) or CN2/CN2A/CN2B/CN2C of the servo
amplifier may cause a malfunction.
• Make sure that no operation signal is being input to the servo amplifier before resetting an alarm or releasing the
emergency stop. Failing to do so may cause an unexpected operation.
• If the power supply is shut off by a molded-case circuit breaker or a fuse, remove the cause and secure safety before
switching the power on.
• Install the servo amplifier according to the EMC guidelines because electromagnetic interference may affect the electronic
equipment used near the servo amplifier.
• To prevent an electric shock or a fire, do not disassemble, repair, or modify the product. Disassembled, repaired, and/or
modified products are not covered under warranty.
• Eliminate static electricity before performing actions such as wiring or operating a switch.
Servo amplifier
DOCOM
Control output
RA
signal
For source output interface
24 V DC
RA
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