2
•
When using the electromagnetic brake motor in vertical drive (gravitational
operation), be sure to operate after checking the load condition. If a load in
excess of the rated torque is applied or the small torque limiting value is set,
the load may fall. This may result in injury or damage to equipment.
Maintenance and inspection
•
Always turn off the power before performing maintenance/inspection.
Failure to do so may result in electric shock.
•
Do not touch the motor or driver when measuring insulation resistance
or performing a dielectric strength test. Accidental contact may result in
electric shock.
•
Do not touch the connection terminals on the driver immediately until the
CHARGE LED turns off after the power is turned off. Residual voltage may
cause electric shock.
•
Regularly check the openings in the driver for accumulated dust.
Accumulated dust may cause fire.
Repair, disassembly and modification
•
Do not disassemble or modify the motor, gearhead and driver. Doing so
may result in electric shock, injury or equipment damage. Refer all such
internal inspections and repairs to the branch or sales office from which you
purchased the product.
CAUTION
General
•
Do not use the product in conditions exceeding the motor, gearhead or
driver specifications. Doing so may result in fire, electric shock, injury or
equipment damage.
•
Do not insert an object into the openings in the driver. Doing so may result
in fire, electric shock or injury.
•
Do not touch the motor, gearhead or driver while operating or immediately
after stopping. The surface of the motor, gearhead or driver may be hot and
cause a skin burn(s).
Installation
•
Do not leave anything around the motor and driver that would obstruct
ventilation. Doing so may result in damage to equipment.
•
Do not carry the product by holding the motor, gearhead output shaft or any
of the cables. Doing so may result in injury.
•
Do not touch the motor output shaft (end of shaft or pinion) with bare
hands. Doing so may result in injury.
•
When assembling the motor with the gearhead, exercise caution not to pinch
your fingers or other parts of your body between the motor and gearhead.
Injury may result.
•
Securely install the motor, gearhead and driver to their respective mounting
plates. Inappropriate installation may cause the motor/driver to detach and
fall, resulting in injury or equipment damage.
•
Provide a cover on the rotating part (output shaft). Failure to do so may
result in injury.
•
When installing the motor, gearhead in the equipment, exercise caution not
to pinch your fingers or other parts of your body between the equipment and
motor or gearhead. Injury may result.
•
Securely install the load on output shaft. Inappropriate installation may
result in injury.
Connection
•
Be sure to ground the motor and driver to prevent them from being damaged
by static electricity. Failure to do so may result in fire or damage to equipment.
Operation
•
Use a 24 VDC power supply with reinforced insulation on its primary and
secondary sides. Failure to do so may result in electric shock.
•
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.
•
Immediately when trouble has occurred, stop running and turn off the driver
power. Failure to do so may result in fire, electric shock or injury.
•
Do not touch the rotating part (output shaft) while operating. Doing so may
result in injury.
•
The motor surface temperature may exceed 70 °C (158 °F)
even under normal operating conditions. If the operator is
allowed to approach a running motor, attach a warning label
as shown to the right in a conspicuous position. Failure to
do so may result in skin burn(s).
Warning label
•
Use an insulated screwdriver to adjust the switches in the driver. Failure to
do so may result in electric shock.
Disposal
•
Dispose the product correctly in accordance with laws and regulations, or
instructions of local governments.
Precautions for use
•
Connect protective devices to the power line
Connect a circuit breaker or earth leakage breaker to the driver power line to
protect the primary circuit. If an earth leakage breaker is to be installed, use
one incorporating high-frequency noise elimination measures.
•
Use an electromagnetic brake type motor in an application of
vertical drive such as elevating equipment
When the motor is used in an application of vertical drive such as elevating
equipment (lifting and lowering device), use an electromagnetic brake type
motor so that the load can be held in position.
•
Do not use a solid-state relay (SSR) to turn on/off the power
A circuit that turns on/off the power via a solid-state relay (SSR) may damage
the motor and driver.
•
Do not conduct the insulation resistance measurement or dielectric
strength test with the motor and driver connected
Conducting the insulation resistance measurement or dielectric strength test
with the motor and driver connected may result in damage to the product.
•
Grease measures
On rare occasions, grease may ooze out from the gearhead. If there is concern
over possible environmental damage resulting from the leakage of grease,
check for grease stains during regular inspections. Alternatively, install an oil
pan or other device to prevent leakage from causing further damage. Grease
leakage may lead to problems in the user's equipment or products.
•
Apply grease to the hollow output shaft of a hollow shaft flat gearhead
When using a hollow shaft flat gearhead, apply grease (molybdenum disulfide
grease, etc.) on the surface of the load shaft and inner walls of the hollow
output shaft to prevent seizure.
•
Noise elimination measures
Refer to the USER MANUAL for the noise elimination measures.
•
The driver uses semiconductor elements, so be extremely careful
when handling them
Electrostatic discharge can damage the driver.
Be sure to ground the motor and driver to prevent them from being damaged
by electric shock or static electricity.
•
Preventing leakage current
Stray capacitance exists between the driver’s current-carrying line and other
current-carrying lines, the earth and the motor, respectively. A high-frequency
current may leak out through such capacitance, having a detrimental effect
on the surrounding equipment. The actual leakage current depends on the
driver’s switching frequency, the length of wiring between the driver and
motor, and so on.
When connecting an earth leakage breaker, use one of the following products
offering resistance against high frequency current:
Mitsubishi Electric Corporation: NV series
