Electrical Data
1.1 Definitions
Maximum speed n
max, mech
The maximum permissible mechanical speed is n
max
. It is defined by the centrifugal forces
and frictional forces in the bearings.
Maximum torque M
max
Torque which is generated at the maximum permissible current.
The maximum torque is briefly available for high-speed operations (dynamic response to
quickly change loads).
The maximum torque is limited by the control parameters. If the current is increased, then
the rotor will be de-magnetized.
Optimum speed n
opt
Speed at which the optimum motor power is output (refer to to the following diagram).
Optimum power P
opt
Power which is reached at the optimum speed.
6SHHG
3RZHU
RXWSXW
6SHHG
(IILFLHQF\
6SHHG
7RUTXH
2SWLPXPRSHUDWLQJSRLQW
3
RSW
Q
RSW
3
1
K
1
0
1
0
Figure 1-5 Optimum operating point
General Section for Synchronous Motors
1-8 Configuration Manual, (PJAL), 11.2005 Edition, 6SN1 197-0AD07-0BP4
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