SIEMENS
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Siemens NC 62 · 2016
SIMOTICS motors
Technical definitions for AC motors
6
■
Overview
(continued)
Balancing in accordance with DIN ISO 8821
In addition to the balance quality of the motor, the vibration
quality of motors with mounted belt pulleys and couplings is
essentially determined by the balance quality of the mounted
component.
If the motor and mounted component are separately balanced
before they are assembled, then the process used to balance
the belt pulley or coupling must be adapted to the motor balanc-
ing type. The following different balancing methods are used on
motors of type SIMOTICS M-1PH8:
•
Half-key balancing
•
Full-key balancing
•
Plain shaft extension
The letter H (half key) or F (full key) is printed on the shaft exten-
sion face to identify a half-key balanced or a full-key balanced
SIMOTICS M-1PH8 motor.
SIMOTICS S-1FT7/1FK7 motors with feather key are always
half-key balanced.
In general, motors with a plain shaft are recommended for
systems with the most stringent vibration quality requirements
For full-key balanced motors, we recommend belt pulleys with
two opposite keyways, but only one feather key in the shaft
extension.
Vibration stress, immitted vibration values
The following maximum permissible vibration stress limit for a
fully functional machine applies only to SIMOTICS S-1FT7/1FK7
permanent-magnet servomotors.
Vibration stress in accordance with DIN ISO 10816:
• 1
g
at 20 Hz up to 2 kHz
For all main motors of type SIMOTICS M-1PH8, the following
limits are valid for (immitted) vibration values transferred into the
motor from an external source:
Coolant temperature (ambient temperature) and
installation altitude for motors with natural cooling and
forced ventilation
Operation (unrestricted): -15
°C to +40
°C (+5 to 104 °F)
The rated power (rated torque) is applicable to continuous duty
(S1) in accordance with EN 60034-1 at rated frequency, a
coolant temperature of 40 °C (104 °F) and an installation altitude
of up to 1000 m (3281 ft) above sea level.
Apart from the SIMOTICS M-1PH8 motors, all motors are de-
signed for temperature class 155 (F) and utilized in accordance
with temperature class 155 (F). The SIMOTICS M-1PH8 motors
are designed for temperature class 180 (H). For all other condi-
tions, the factors given in the table below must be applied to
determine the permissible output (torque).
The coolant temperature and installation altitude are rounded to
5 °C and 500 m (1640 ft) respectively.
Vibration
frequency
Vibration values for
1PH808/1PH810/1PH813/1PH816
< 6.3 Hz
Vibration displacement
s
≤
0.16 mm
(0.006 in)
6.3 ... 250 Hz
Vibration velocity
V
rms
≤
4.5 mm/s
(0.18 in/s)
> 250 Hz
Vibration acceleration
a
≤
10 m/s
2
(32.8 ft/s
2
)
Vibration
frequency
Vibration values for
1PH818/1PH822/1PH828/1PH835
< 6.3 Hz
Vibration displacement
s
≤
0.25 mm
(0.099 in)
6.3 ... 63 Hz
Vibration velocity
V
rms
≤
7.1 mm/s
(0.28 in/s)
> 63 Hz
Vibration acceleration
a
≤
4.0 m/s
2
(13.12 ft/s
2
)
Installation
altitude above
sea level
Coolant temperature
(ambient temperature)
m (ft)
< 30 °C
(86 °F)
30 ... 40 °C
(86 ... 104 °F)
45 °C
(113 °F)
50 °C
(122 °F)
1000 (3281)
1.07
1.00
0.96
0.92
1500 (4922)
1.04
0.97
0.93
0.89
2000 (6562)
1.00
0.94
0.90
0.86
2500 (8203)
0.96
0.90
0.86
0.83
3000 (9843)
0.92
0.86
0.82
0.79
3500 (11484)
0.88
0.82
0.79
0.75
4000 (13124)
0.82
0.77
0.74
0.71
© Siemens AG 2016