Omron OMNUC FND Series User Manual page 58

Design and Installation
j Keeping Foreign Objects Out of Units
Place a cover over the Units or take other preventative measures to prevent foreign objects, such as
drill filings, from getting into the Position Driver during installation. Be sure to remove the cover after
installation is complete. If the cover is left on during operation, heat buildup may damage the Driver.
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 Position Driver.
AC Servomotors
j Operating Environment
Be sure that the environment in which the Servomotor is operated meets the following conditions.
Ambient operating temperature:
Ambient operating humidity: OMNUC U Series: 20% to 80% (RH, with no condensation)
Atmosphere:
j Impact and Load
The Servomotor is resistant to impacts of up to
2
98 m/s {10 G}. Do not subject it to heavy impacts or
loads during transport, installation, or positioning. In
addition, do not hold onto the encoder/resolver
area, cable, or connector areas when transporting it.
Always use a pulley remover to remove pulleys,
couplings, or other objects from the shaft.
Secure cables so that there is no impact or load placed on the cable connector areas.
j Connecting to Mechanical Systems
The axial loads for Servomotors are specified in sec-
tion 5-2 Servomotor Specifications . If an axial load
greater than that specified is applied to a Servomo-
tor, it will reduce the service life of the motor bearings
and may damage the motor shaft. When connecting
to a load, use couplings that can sufficiently absorb
mechanical eccentricity and variation.
Recommended Coupling
Name
Oldham coupling
For spur gears, an extremely large radial load may
be applied depending on the gear precision. Use
spur gears with a high degree of accuracy (for exam-
ple, JIS class 2: normal line pitch error of 6 µm max.
for a pitch circle diameter of 50 mm). If the gear preci-
sion is not adequate, allow backlash to ensure that
no radial load is placed on the motor shaft.
2-34
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
0 C to +40 C
OMNUC U-UE Series: 20% to 80% (RH, with no condensation)
OMNUC H Series: 35% to 85% (RH, with no condensation)
OMNUC M Series: 35% to 85% (RH, with no condensation)
No corrosive gases.
Maker
Myghty Co., Ltd
Shaft core
Motor shaft center line
displacement
Backlash
Chapter 2
Ball screw center line
Adjust backlash
by adjusting the
distance between
shafts.