
2
Safety precautions
The precautions described below are intended to prevent danger or
injury to the user and other personnel through safe, correct use of the
product. Fully understand the meaning of each item before using the
product.
Warning
Handling the product without observing the instructions that
accompany a “Warning” symbol may result in serious injury or
death.
General
• Do not use the product in explosive or corrosive environments, in
the presence of flammable gases or near combustibles. Doing so
may result in fire, electric shock or injury.
• Assign qualified personnel the task of installing, wiring,
operating/controlling, inspecting and troubleshooting the product.
Failure to do so may result in fire, electric shock , injury or
damage to equipment.
• Do not transport, install the product, perform connections or
inspections when the power is on. Always turn the power off
before carrying out these operations. Failure to do so may result in
electric shock.
• Provide a means to hold the moving parts in place for applications
involving vertical travel. In the position control mode, the motor
will lose its holding torque when the power is turned off. In all
other modes, the holding torque will be lost when the motor stops.
Loss of holding torque may cause the moving part to drop,
resulting in injury or damage to the equipment.
Installation
• To prevent the risk of electric shock, use the motor for class I
equipment only.
• Install the motor so as to avoid contact with hands, or ground them
to prevent the risk of electric shock.
Connection
• Connect the motor securely according to the motor connection
method explained in the “NX Series Driver OPERATING
MANUAL”. Failure to do so may result in fire or electric shock.
• Do not forcibly bend, pull or pinch the cables. Doing so may
result in fire or electric shock.
Repair, disassembly and modification
• Do not disassemble or modify the motor. This may cause electric
shock or injury. Refer all such internal inspections and repairs to
the branch or sales office from which you purchased the product.
Caution
Handling the product without observing the instructions that
accompany a “Caution” symbol may result in injury or property
damage.
General
• Do not use the motor beyond its specifications, or electric shock,
injury or damage to equipment may result.
• Do not touch the motor during operation or immediately after
stopping. The surface is hot and may cause a skin burn(s).
Transportation
• Do not hold the motor output shaft or motor cable. This may cause
injury.
Installation
• Provide a cover over the rotating parts (output shaft) of the motor
to prevent injury.
Operation
• Do not touch the rotating parts (output shaft) of the motor during
operation. This may cause injury.
• Provide an emergency stop device or emergency stop circuit
external to the equipment so that the entire equipment will operate
safely in the event of a system failure or malfunction. Failure to do
so may result in injury.
• The motor’s surface temperature may exceed 70 °C
(158 °F), even under normal operating conditions. If
a motor is accessible during operation, post a warning
label shown in the figure in a conspicuous position to
prevent the risk of skin burn(s).
Warning
label
• For the power supply input to the electromagnetic brake, use a DC
power supply with reinforced insulation on the primary side.
Maintenance and inspection
• To prevent the risk of electric shock, do not touch the terminals
while measuring the insulation resistance or conducting a
voltage-resistance test.
Disposal
• To dispose of the motor, disassemble it into parts and components
as much as possible and dispose of individual parts/components as
industrial waste.
Precautions for use
• Conduct the insulation resistance measurement or
withstand voltage test separately on the motor and the
driver.
Conducting the insulation resistance measurement or withstand
voltage test with the motor and driver connected may result in injury
or damage to equipment.
• Do not apply an overhung load and thrust load in excess of
the specified permissible limit.
Operating the motor under an excessive overhung load and thrust
load may damage the motor bearings (ball bearings). Be sure to
operate the motor within the specified permissible limit of overhung
load and thrust load. See page 4 for details.
• Do not use the electromagnetic brake to reduce speed or as
a safety brake.
The electromagnetic brake is of non-excitation type. Although it
helps maintain the position of the load in the event of power outage,
etc., this brake cannot securely hold the load in place. Always stop
the motor first, and then use the electromagnetic brake to maintain
the position of the load.
• Preventing electrical noise
See “NX Series Driver OPERATING MANUAL” for measures with
regard to noise.
• Do not apply impact to the encoder.
If the encoder receives strong impact, the encoder may be damaged
or the motor may malfunction.