Technical data and characteristics
4.2 Output voltages
1PH7 induction motors (Machine tools)
86 Configuration Manual, (APH7W), 04/2009, 6SN1197-0AD72-0BP0
Power rating data for duty types S1 and S6
All power rating data of induction motors refer to continuous operation and the appropriate
duty type S1.
However, for many applications, duty type S1 does not apply, if e.g. the load varies as a
function of time. For this particular case, an equivalent sequence can be specified which
represents, as a minimum, the same load for the motor.
For shorter accelerating times, torque surges or drives which have to handle overload
conditions, short-time or peak currents are available in a 60 second cycle. The magnitude
and precise engineering of these currents are described in the documentation for the
relevant converter power units or Motor Modules.
The characteristics for continuous duty S1 and intermittent operation S6-60 %, S6-40 % and
S6-25 % describe the permissible power values for an ambient temperature of up to 40 °C.
A winding temperature rise of approx. 105 K can occur.
Speed limit
The maximum permissible speed n
max
is determined by mechanical factors. The maximum
speed n
max
may not be exceeded and may not be continually used.
CAUTION
If the speed n
max
is exceeded, this can damage the bearings, short-circuiting rings, press
fits, etc. To ensure that the motor does not run at excessive speeds, the control must be
configured accordingly or speed monitoring must be activated in the drive system.
4.2 4.2 Output voltages
Drive system
Table 4- 1 Voltages for the SINAMICS S120 drive system, 3-ph. 380 - 400 V AC
Mains voltage DC link voltage Output voltage
Infeed module
U
supply
U
ZK
U
mot
Active Line Module 400 V 600 V 425 V
To Next Page
Loading...
