4-4
4-1 Installation Conditions
OMNUC G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
4
System Design
Oil-water Measures
Use the Servomotor with an oil seal if you are using it in an environment where oil drops can
adhere to the through-shaft part. The operating conditions of the Servomotor with an oil seal
are as follows:
 Keep the oil level below the lip of the oil seal.
 Prepare a good lubricated condition under which only oil droplets splash on the oil seal.
 If you are using the Servomotor with the shaft in upward direction, make sure that no oil
accumulates on the lip of the oil seal.
Radiator Plate Installation Conditions
 When you mount a Servomotor onto a small device, be sure to provide enough radiation space
on the mounting area. Otherwise the Servomotor temperature rises too high. One of the
preventive measures is to install a radiator plate between the motor attachment area and the
motor flange. (See below) Refer to 3-3 Servomotor Specifications on page 3-32 for the radiator
plate specifications.
 The temperature rise depends on the mounting part materials and the installation environment.
Check the actual temperature rise by using a real Servomotor.
 Depending on the environment, such as when the Servomotor is installed near a heating element,
the Servomotor temperature may rise significantly. In this case, take any of the following
measures.
Lower the load ratio.
Review the heat radiation conditions of the Servomotor.
Install a cooling fan and apply forced air cooling to the Servomotor.
Other Precautions
 Take measures to protect the motor shaft from corrosion. The motor shaft is coated with anti-
corrosion oil when shipped, but anti-corrosion oil or grease should also be applied when
connecting the components that apply load to the shaft.
Radiator plate
Caution
Do not apply a commercial power supply directly to
the motor. Failure to follow this guideline may result
in fires.
Never repair the product by disassembling it.
Failure to follow this guideline may result in electric
shock or injury.
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