JVL MAC050 - Efficiency Curve

364 JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
6.3 Efficiency curve
6.3.1 Motor efficiency curve
The curve below shows the efficiency of the MAC140 motor as a function of speed.
The efficiency is based on the difference in the total amount of electrical power applied
to the motor compared with the mechanical output power on the shaft.
The power consumption for the internal circuitry (microprocessor etc.) is typically <
3.5W. In the speed range from 0 to 500 RPM this internal power consumption starts to
be a dominant part of total power consumption which explains that the efficiency is low
-
er.
Only MAC050 to 141
%
1000
100
80
60
40
20
0
2000 3000 4000
TT0954GB
RPM
Operation above 4000 RPM
can be done, but the losses in
the motor make it impossible
to operate in this area cyclicly.
MAC140 Typical efficiency at rated load
Conditions:
Supply voltage = 24/48VDC
Load = 0.32Nm
Ambient temperature = 20°C
Torque setting = 100%
Load setting = 1.0
= 48VDC supply
= 24VDC supply