Vibration And Shock; Air Humidity; Ul Standard; Efficiency - Danfoss VLT Brook Crompton Motor FCM 300 Design Manual

All about FCM 300
4 4
Illustration 4.5 Torque characteristic

4.1.11 Vibration and Shock

FCM 300 Series has been tested according to a procedure
based on the following standards:
IEC 60068-2-6:
IEC 60068-2-34:
IEC 60068-2-35:
IEC 60068-2-36:
Table 4.2
FCM 300 Series complies with requirements that
correspond to conditions in the standards mentioned
above.

4.1.12 Air Humidity

FCM 300 Series has been designed to meet the IEC
60068-2-3 standard, EN 50178 item 9.4.2.2/DIN 40040, class
E, at 40° C.
Cyclic damp heat according to IEC 60068-2-30, 40° C.

4.1.13 UL Standard

FCM 300 Series is UL approved.
80
®
VLT DriveMotor FCM Series
Vibration (sinusoidal) - 1970
Random vibration broad-band
- general requirements
Random vibration broad-band
- high reproducibility
Random vibration broad-band
- medium reproducibility
MG03BA02 - VLT
See 2.1.2 General Technical Data for correct use of prefuses.

4.1.14 Efficiency

Efficiency of the Frequency Converter (η
The load on the frequency converter has little effect on its
efficiency. In general, the efficiency is the same at the
rated motor frequency fM,N, even if the motor supplies
100% of the rated shaft torque or only 75%, i.e. in case of
part loads.
This also means that the efficiency of the frequency
converter does not change even if other U/f characteristics
are chosen.
However, the U/f characteristics influence the efficiency of
the motor.
The efficiency declines a little when the switching
frequency is set to a value of above 5 kHz. The efficiency
will also be slightly reduced if the mains voltage is 480 V.
Efficiency of the motor (η
The motor of the FCM 300 is designed according to IE2
and tested correspondingly after IEC 60034-1.
The efficiency of a motor connected to the frequency
converter depends on magnetizing level. With optimized
data, the efficiency is just as good as with mains operation.
In the range of 75-100% of the rated torque, the efficiency
of the motor is practically constant, both when it is
controlled by the frequency converter and when it would
run directly on mains. The influence from the switching
frequency on efficiency is marginal.
Efficiency of the system (η
To calculate the system efficiency (FCM), the efficiency of
the frequency converter (η
efficiency of the motor (η
®
is a registered Danfoss trademark
)
VLT
)
MOTOR
)
SYSTEM
) is multiplied by the
VLT
): η = η x η
MOTOR SYSTEM VLT MOTOR