Siemens TV Converter Box 611 User Manual
Configuring the motor
5.1 Procedure
Determining the motor torque-speed diagram
If a motor torque-speed diagram is not available, the relevant values can be determined with
sufficient accuracy using the specifications for the maximum torque M
MAX
, the rated torque
M
N
, and the associated speeds n
MAX,MMAX
and n
MAX,MN
as shown in "Motor torque-speed
diagram".
This diagram must be compared with the motor torque-time diagram and the speed-time
This diagram must be compared with the motor torque-time diagram and the speed-time
diagram (see diagram below). To do so, it is normally sufficient to locate the critical points in
the torque-time diagram at which the maximum speed n
MAX,MMAX
is exceeded at the peak
torque. For these points, the motor torque (in this example: M
1
) can be read from the motor
torque-time diagram and checked to determine whether it lies below the characteristic in the
motor torque-speed diagram.
Figure 5-5
Motor torque-time diagram and associated speed-time diagram
5.1.7
Torque-speed requirements
Fulfilling the torque-speed requirements
If the selected torque motor cannot fulfill the torque-speed requirements, the following
solutions are available:
● Override:
● Override:
Provided that no special requirements regarding precision have been specified for the
high speed range (e.g. rapid traverse without machining), the maximum speed can be
overridden. In this case, the converter output voltages and, in turn, the motor currents are
1FW6 Built-in torque motors
70
Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7