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Ambient Temperature Control
To operate in environments 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, 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
Drive surface temperatures may rise to as much as 30
heat-resistant materials for wiring, and keep its 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 alarms, malfunctioning
due to noise, and damage to individual elements.
If a drive is always operated at the ambient temperature of 55
torque and rated rotation speed, its limit is expected to be approx. 28,000 hours (excluding the
axial-flow fan). A drop of 10
Keeping Foreign Objects Out of Units
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 drives.
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
C.
C in the ambient temperature will double the expected limit for drive.
4-1 Installation Conditions
C above the ambient temperature. Use
C and with 100% output of the rated
4
4-2
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