Short Time Overloads; Rating Plates; Commissioning The Variable Speed Application - ABB MT Série Manuel D'installation, D'exploitation Et De Maintenance

NOTE!
The actual thermal loadability of a motor may be
lower than shown by guideline curves.

6.7.5 Short time overloads

ABB motors can usually be temporarily overloaded as well
as used in intermittent duties. The most convenient method
to dimension such applications is to use the DriveSize tool.

6.8 Rating plates

The usage of ABB's motors in variable speed applications
do not usually require additional rating plates. The
parameters required for commissioning the converter
can be found from the main rating plate. In some special
applications, however, the motors can be equipped with
additional rating plates for variable speed applications.
Those include the following information:
- speed range
- power range
- voltage and current range
- type of torque (constant or quadratic)
- and converter type and required minimum switching
frequency.
Standard_Manual_LV_Motors_ML_revF_Book.indb 13
6.9 Commissioning the variable
speed application
The commissioning of the variable speed application must
be done according to the instructions of the frequency
converter and local laws and regulations. The requirements
and limitations set by the application must also be taken
into account.
All parameters needed for setting the converter must be
taken from the motor rating plates. The most often needed
parameters are:
- nominal voltage
- nominal current
- nominal frequency
- nominal speed
- nominal power
NOTE!
In case of missing or inaccurate information, do not
operate the motor before ensuring correct settings!
ABB recommends using all the suitable protective features
provided by the converter to improve the safety of the
application. Converters usually provide features such as
(names and availability of features depend on manufacturer
and model of the converter):
- minimum speed
- maximum speed
- acceleration and deceleration times
- maximum current
- maximum torque
- stall protection
Low voltage motors manual, 3GZF500730-85 Rev F 02-2015 | ABB Motors and Generators 13
6/2/2015 6:44:25 PM