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DC Brushless motors for industrial use -Safety Precautions

Read the User's Guide and other accompanying documents carefully before handling the motor, installing it in a device or operating it in order to ensure correct usage. Make sure that you have fully familiarized yourself with all the information about the motor, including safety information and precautions before using the motor. The following warnings and cautions are provided in order to ensure safe and correct usage of this product as well as to prevent injury or physical damage to you and others.


WARNINGWARNING
This symbol indicates important information that, if ignored, could possibly result in death or serious injury.
CAUTIONCAUTION
This symbol indicates important information that, if ignored, could possibly result in personal injury or property damage.

Some of the safety information that follows theCAUTION CAUTION symbol may, if ignored, result in serious hazards depending on the situation. All safety instructions provided under both symbols are very important and must be followed.


WARNINGWARNING
General
  • Do not use the product in potentially explosive, flammable, corrosive or wet environments to prevent fire or personal injury.
  • Assign qualified personnel to perform all tasks of installing, wiring, operating/controlling, inspecting and troubleshooting related to this product. Failure to do so may result in fire or injury.
  • Whenever a problem triggers the driver's protection function, correct the problem. Continuing to operate the driver without correcting the problem may result in motor malfunction, leading to personal injury or equipment damage.
  • To avoid injury, do not disassemble or alter the motor or driver.
Installation
  • Install the motor and driver inside the equipment housing.
Connection
  • The driver is designed for a DC power supply. To prevent fire, be sure to connect the driver using correct polarity.
  • To prevent fire, use the driver within the rated input voltage range.
  • To prevent fire, follow the wiring diagram when connecting the motor and driver.
  • To prevent fire, do not forcefully bend, pull or pinch the cables.
  • To prevent electric shock, when connecting the driver use a direct current power supply with reinforced insulation between the primary and secondary circuits.
Operation
  • In the event of a power failure, cut off the driver's power supply. Failure to turn off the power may result in the motor suddenly starting up when the power comes back on, possibly causing personal injury or damage to equipment.
  • Do not use the product for lifting and lowering devices. Movable components may fall, resulting in personal injury or damage to equipment.
CAUTIONCAUTION
General
  • To avoid injury or damage to equipment, do not use the motor and driver beyond their specification values.
  • Do not touch the motor and driver while in operation or immediately after operation has ceased. The surface of the motor and driver is hot and may cause burn injuries.
Transport
  • The motor could drop if carried by the output shaft or cable. To avoid injury, do not carry the motor by the output shaft or cable.
Installation
  • Do not place any flammable material near the motor and driver to avoid fire or burn injuries.
  • Do not place any material around the motor and driver that might block ventilation to avoid causing damage to your equipment.
  • Cover the output shaft while the motor is in operation to avoid injury.
Operation
  • To prevent injury, install an external emergency stop device or circuit breaker that will ensure safe operation of your equipment in the event of equipment failure or malfunction.
  • In the event of malfunction, stop operation immediately and turn off the driver's power supply to prevent fire, electric shock, or injury.
  • To avoid injury, do not touch the spinning component (output shaft) while the motor is in operation.
  • Shut off all driver input signals before turning on the driver's power supply to prevent injury or damage to equipment due to sudden start of motor operations.
  • To prevent injury, turn off the driver's power supply before manually operating the motor output shaft.
  • To prevent injury or damage to equipment, do not use the power supply's on/off switch to start or stop operation of the motor. Use the START/STOP and RUN/BRAKE switches.
  • The motor's surface temperature may exceed 80℃ even under normal operating conditions. If there is a chance that anyone can come into contact with the motor during operation, attach a warning label, as shown below, to the motor so that it is clearly visible in order to prevent the risk of burn injuries.

    Warning label
Disposal
  • To dispose of the motor and driver, disassemble them into parts and components as best as possible and dispose of the individual parts/components as industrial waste.

Important Handling Information

This section contains important handling and regulatory information for the 24DCM series motors.


  • Use the driver power supply correctly.
    Using the wrong polarity when connecting the DC power supply or using an AC power supply will damage the driver.
  • Do not exceed the input voltage range.
    The power supply's input voltage range must be 24 VDC ±10%. Do not use a power supply with excessive voltage or high ripple voltage.
    When using anything other than a commercially produced DC power supply unit consisting of a transformer, diodes and condenser, make sure that the power supply waveform is flat in addition to testing the power supply in order to avoid failure.
  • Do not use the motor for load lowering operations.
    The 24DCM series motors are not intended for use in operations where the motor output shaft is turned from the load side (i.e. load lowering operation). In such operations, motor speed cannot be controlled, and the motor's protection function may be activated to automatically stop the motor from running, causing the load to drop.
  • Take noise cancellation measures.
    The driver controls the motor via pulse-width modulation (PWM). PWM noise may affect other devices installed in its vicinity. When installing a sensor or microcomputer near the driver power supply, take appropriate noise cancellation measures.
  • Take fail-safe measures.
    While the driver has a built-in protection circuit, it can operate only when it's clear of faults. Install a fuse on the lead wire connected with the power supply to reduce the risk of failure.
  • Conduct separate insulation resistance and dielectric strength tests for the motor and driver.
    To avoid damage to the product, do not conduct insulation resistance and dielectric strength tests while the motor is connected to the driver.

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