Omron R88D-KTA5L User Manual page 271

Ambient Temperature Control
 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 Servo Drive's
ambient temperature from exceeding 55
 Drive surface temperatures may rise to as much as 30
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 alarms, malfunctioning
due to noise, and damage to individual elements.
 If a drive is always operated at the ambient temperature of 55
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
Lifetime 25°C = Lifetime 55°C × 2
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 the drives.
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
° C.
° C in the ambient temperature will double the expected life for drive.
55−25
= 224000 hour
10
4-1 Installation Conditions
° C above the ambient temperature. Use
° C and with a 100% output of the
4
4-2