4-4
4-1 Installation Conditions
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
4
System Design
When connecting to a V-belt or timing belt, consult the manufacturer for belt selection and tension.
A radial load twice as large as the belt tension will be placed on the motor shaft. Do not allow a
load that exceeds the allowable radial load to be placed on the motor shaft. If an excessive radial
load is applied, the motor shaft and bearings may be damaged.
Set up a movable pulley in the middle of the motor shaft and the load shaft so that the belt tension
can be adjusted.
Water and Drip Resistance
The protective structure for the motors is as follows:
Equivalent to IP67 (except for through-shaft parts and motor connector pins and encoder
connector pins)
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. (Refer to the following figure.) If a radiator plate cannot be connected, the
Servomotor may be damaged by an excessive rise in temperature. Refer to the "Servomotor
Specifications"(P.3-59) 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.
Pulley
Belt
Te nsion
Te nsion adjustment (Set a movable structure.)
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