LS ELECTRIC L7NHF Series, User Manual

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Introduction
iv

Wiring Precautions
Caution

Always use an AC 200-230 V power input for the servo drive.

Always connect the servo drive to a ground terminal.

Do not connect a commercial power supply directly to the servo motor.

Do not connect commercial power supply directly to U, V and W output terminals of
the servo drive.

Connect U, V and W output terminals of the servo drive directly to the U, V, W power
input terminals of the servo motor, but do not install magnetic contactors between the
wires.

Always use pressurized terminals with insulation tubes when wiring the servo drive
power terminal.

When wiring, be sure to separate U, V and W power cables for the servo motor and
the encoder cable.

Always use the robot cable if the motor is of a moving structure.

Before performing power wiring, turn off the input power of the servo drive and wait
until the charge lamp goes off completely.

Use N terminals to connect the external capacitor. The product may burn if a
commercial power supply is connected to N terminals. Always contact the customer
center or agency when it is necessary to connect the external capacitor.

Startup Precautions
Caution

Check the input voltage (AC 200-230 V) and power unit wiring before supplying power
to the device.

The servo must be in OFF mode when you turn on the power.

For L7NHFA
□□□, check the motor ID, encoder type and encoder pulse to be used
before turning on the power.

For L7NHFA □□□, first set the motor ID [0x2000], encoder type [0x2001] and encoder
pulse [0x2002] after turning on the power.

After completing the above settings, set the drive mode for the servo drive connected
to
the upper level controller in [0x6060].

Perform I/O wiring for the servo drive referring to Section 2.5, “Wiring for Input/Output
Signals.”

You can check the on/off status of each I/O contact point from the digital input of
[0x60FD].

Handling and Operating Precautions
Caution

Check and adjust each parameter before operation.

Do not touch the rotating unit of the motor during operation.

Do not touch the heat sink during operation.

Be sure to attach or remove I/O, ENC connectors only when the power is off.

Extreme changes of parameters may cause system instability.