8
Chapter 4 Connection of Servo Unit
4.1 Wiring and Connecting precautions
4.1.1 General precautions
△
!
Danger
Do not change the wiring during power-on.
Otherwise, it will lead to electric shock or injury.
△
!
Warning
Please be connected or checked by professional technicians.
Otherwise, it will lead to electric shock or product failure.
Please carefully confirm the wiring and power supply.
The output circuit may be short-circuited due to wrong wiring and application of abnormal voltage. Mechanical
damage or casualties caused by the above failures.
Please connect with designated terminals when AC power supply and DC power supply are connected with servo
drive.
AC power supply should be connected to L1/L2/L3 terminal and L1C/L2C terminal of servo drive.
Please connect DC power supply with B1/
⊕
terminal and terminal
of servo drive, L1C/L2C.
Failure to do so may result in failure or fire.
Please connect the external dynamic brake resistor conforming to the specifications of machinery and devices
with the designated terminal when the servo drive uses the external dynamic brake option. Otherwise,
unexpected actions will be caused during emergency stop, causing equipment damage, burning damage and
personal injury.
△
!
Notes
Please confirm that the (CHARGE) lamp is off after the power supply is turned off for at least 5 minutes, and then
conduct wiring and inspection. Even if the power supply is turned off, high voltage may still remain inside the
servo drive. Therefore, do not touch the power terminal while the (CHARGE) lamp is on.
Otherwise, it will lead to electric shock.
Please follow the precautions and procedures recorded in this manual for wiring and trial operation.
Servo drive failure caused by wrong wiring of brake circuit and application of abnormal voltage may lead to
mechanical damage or casualties.
Please wire correctly and reliably.
The connector and the pin arrangement of the connector vary depending on the model. Please be sure to confirm
the pin arrangement through the technical data of the model used.
Otherwise, it will lead to product failure or misoperation.
Please be sure to tighten and effectively connect the wires of the power supply terminal and the motor connection
terminal according to the specified method and torque. If it is not tightened sufficiently, the wires and terminal
blocks will heat up and cause fire due to poor contact.
For input and output signal cables and encoder cables, please use shielded double stranded wires or multi-core
double stranded integrated shielded wires.
When wiring the main loop terminal of servo drive, please observe the following precautions.
After all wiring including the main loop terminals is completed, the servo drive power supply is switched on.
When the main circuit terminal is of connector type, please remove the connector from the servo drive body and
wire again.
Only one wire can be inserted into one wire socket of the main circuit terminal.
When inserting wires, do not make burrs of core wires contact with adjacent wires to cause short circuit.
Please set up safety devices such as circuit breakers for wiring to prevent external wiring from short-circuiting.
Otherwise, it will lead to fire or failure.
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