Yaskawa DR2 Sigma Servo - Manual (Page 34)

BASIC USES OF Σ-SERIES PRODUCTS
2.2.2 Installing the Servomotor cont.
20
Installation sites:
The Servomotor SGM and SGMP types are designed for indoor use.
Install Servomotor in an environment which meets the following conditions:
a) Free from corrosive and explosive gases
b) Well-ventilated and free from dust and moisture
c) Ambient temperature of 0 to 40°C
d) Relative humidity of 20% to 80% (non-condensing)
e) Inspection and cleaning can be performed easily
If the Servomotor is used in a location subject to water or oil mist, install a shield cover
over the Servomotor.
Alignment :
Align the shaft of the Servomotor with that of the equipment to be controlled, then connect
the shafts with couplings. Install the Servomotor so that alignment accuracy falls within
the range shown below.
Measure this distance at four different positions in the circumference. The
difference between the maximum and minimum measurements must be
0.03 mm or less. (Turn together with couplings)
Measure this distance at four different positions in the
circumference. The difference between the maximum and minimum
measurements must be 0.03 mm or less. (Turn together with
couplings)
NOTE If the shafts are not aligned properly, vibration will occur, resulting in damage to the bear-
ings.
Mechanical shock to the shaft end must be less than 98m/s 2 (10G) and must be
applied no more than twice.
Design the mechanical system so that thrust load and radial load applied to the servo-
motor shaft end during operation falls within the range shown in the following table.
TERMS
Thrust load and radial load
1. Thrust load: Shaft-end load applied parallel to the cent-
erline of a shaft
2. Radial load: Shaft-end load applied perpendicular to
the centerline of a shaft
Motor
Shaft end
2.
1.
2