HEIDENHAIN TNC 410 M Technical Manual page 443

QSY EcoDyn
synchronous
motors
April 2007
The characteristic curves of the HEIDENHAIN EcoDyn synchronous motors
were determined at a dc-link voltage of 650 V.
If the EcoDyn synchronous motor is operated at a dc-link voltage of 565 V, a
parallel shift of the downward sloping portion of the maximum-torque
characteristic curve by approx. 500 rpm to the left is required.
M
Different DC-Link Voltages
Maximum torque for
U = 650 V
Z
Maximum torque for
U = 565 V
Z
Approx. 500
n
7 – 21