Mechanical Specifications Of Sgmah, Sgmph, Sgmgh, Sgmsh, And Sgmdh Servomotors; Servomotors; Precautions On Servomotor Installation - YASKAWA Sigma-II Series User Manual

3 Servomotor Specifications and Dimensional Drawings

3.8.1 Precautions on Servomotor Installation

3.8 Mechanical Specifications of SGMAH, SGMPH, SGMGH,
SGMSH, and SGMDH Servomotors

3.8.1 Precautions on Servomotor Installation

Servomotors can be installed either horizontally or vertically.
The service life of the servomotor will be shortened or unexpected problems will occur if the servomotor is
installed incorrectly or in an inappropriate location. Always observe the following installation instructions.
• Do not connect the servomotor directly to a commercial power line. This
will damage the servomotor.
The servomotor cannot operate without the proper SERVOPACK.
Storage
Temperature
and Humidity
Installation Site
Alignment
Orientation
Handling Oil
and Water
3-38
Store the servomotor within the following temperature range if it is stored with the power cable discon-
nected.
Surrounding air temperature during storage: -20 to 60°C
Ambient humidity during storage: 80%RH or less (with no condensation)
Servomotors are designed for indoor use. Install the servomotor in environments that satisfy the follow-
ing conditions.
• Free of corrosive or explosive gases.
• Well-ventilated and free of dust and moisture.
• Surrounding air temperature of 0 to 40°C
• Relative humidity of 20% to 80% with no condensation.
• Facilitates inspection and cleaning
Alignment Accuracy
Measure this distance at four
different positions on the
circumference. The difference
between the maximum and
minimum measurements must be
0.03 mm or less.
(Turn together with coupling.)
Servomotors can be installed either horizontally or vertically.
Flange
Through shaft section:
This refers to the gap where
the shaft protrudes from
the end of the motor.
Shaft
CAUTION
Align the shaft of the servomotor with the shaft of the equip-
ment, and then couple the shafts. Install the servomotor so that
alignment accuracy falls within the range described on the left.
Vibration may occur and damage the bearings and encoders if
the shafts are not correctly aligned.
Connect the servomotor to a machine in the way that prevents
from generating concentric loads, or rotary unbalanced loads
on the motor shaft.
If the servomotor is used in a location that is subject to water
drops, make sure of the servomotor protective specifications
(except for through shaft section).
If the servomotor is used in a location that is subject to water or
oil mist, use a servomotor with an oil seal to seal the through
shaft section.
Precautions on Using Servomotor With Oil Seal
• The oil surface must be under the oil seal lip.
• Use an oil seal in favorably lubricated condition.
• When using a servomotor with its shaft pointed upward, be
sure that oil will not stay in the oil seal lips.
Do not connect
When installing, do not hit the
shafts with a hammer etc., as
impacts may result in malfunction.