Efficiency Curve - JVL MAC050 User Manual

6.3
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.
%
100
80
60
40
20
0
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.
364

Efficiency curve

MAC140 Typical efficiency at rated load
1000 2000
JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
RPM
3000 4000
Only MAC050 to 141
Conditions:
Supply voltage = 24/48VDC
Load = 0.32Nm
Ambient temperature = 20°C
Torque setting = 100%
Load setting = 1.0
Operation above 4000 RPM
can be done, but the losses in
the motor make it impossible
to operate in this area cyclicly.
= 48VDC supply
= 24VDC supply
TT0954GB