4-3
4 System Design
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
4-1 Installation Conditions
4
4-1-2 Servomotor Installation Conditions
• Operation in an environment in which there is minimal temperature rise is recommended to maintain
a high level of reliability.
• When the drive is installed in a closed space, such as a box, the ambient temperature may rise due to
temperature rise in each unit. Use a fan or air conditioner to prevent the drive's ambient temperature
from exceeding 55°C.
• Drive surface temperatures may rise to as much as 30°C above the ambient temperature. Use heat-
resistant materials for wiring, and provide a distance from any devices or wiring that are sensitive to
heat.
• The service life of a Servo Drive is largely determined by the ambient temperature around the internal
electrolytic capacitors. When an electrolytic capacitor reaches its limit, electrostatic capacity drops
and internal resistance increases. This leads to overvoltage errors, malfunctioning due to noise, and
damage to individual elements.
• If a drive is always operated at the ambient temperature of 55°C and with a 100% output of the rated
torque and rated rotation speed, its life is expected to be approx. 28,000 hours (excluding the axial-
flow fan). A drop of 10°C in the ambient temperature will double the expected life of the drive.
• Place a cover over the drive or take other preventative measures to prevent foreign objects, such as
drill filings, from getting into the drive during installation. Be sure to remove the cover after installation
is complete. If the cover is left on during operation, drive's heat dissipation is blocked, which may
result in malfunction.
• Take measures during installation and operation to prevent foreign objects such as metal particles,
oil, machining oil, dust, or water from getting inside of the drives.
• The environment in which the motor is operated must meet the following conditions. Operating the
motor outside of the following ranges may result in malfunction of the motor.
Ambient operating temperature: 0 to 40°C
*1
Operating humidity: 85% max. (with no condensation)
Operating atmosphere: No corrosive gases.
*1 The ambient operating temperature is the temperature at a point 50 mm from the motor.
• The motor is resistant to impacts of up to 98 m/s
2
.
Do not apply heavy impacts or loads during
transport, installation, or removal of the motor.
• When transporting the motor, hold the motor body
itself. And do not hold the encoder, cable, or
connector areas. Failure to follow this guideline
may result in damaging the motor.
• Always use a pulley remover to remove pulleys,
couplings, or other objects from the shaft.
• After assembly, secure cables so that there is no impact or load placed on the cable outlet.
Ambient Temperature Control
Keeping Foreign Objects Out of Units
4-1-2 Servomotor Installation Conditions
Environment Operating Conditions
Impact and Load
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