1FT6 Synchronous Motors
Configuration Manual, (PFT6), 10.2005 Edition, 6SN1197-0AD02-0BP1
1-15
Motor Description
Armature short-circuit braking
1.5 Armature short-circuit braking
Definition as described in the Configuration Manual "General Section for Synchronous
Motors".
Dimensioning the braking resistors for optimum short-circuit braking
The correct dimensioning ensures an optimum braking time. The braking torques which are
obtained are also listed in the tables. Data apply for braking from the rated speed and
moment of inertia J
external
= J
mot
. If the motor brakes from another speed, then the braking
time cannot be linearly reduced. However, longer braking times cannot occur if the speed at
the start of braking is less than the rated speed.
The data in the following table is calculated for rated values according to the data sheet. The
variance during production as well as iron saturation have not been taken into account here.
Higher currents and torques can occur than those calculated as a result of the saturation.
The ratings of the resistors must match the particular I
2
t load capability, refer to the Configura-
tion Manual "General Section for Synchronous Motors".
1) With absolute encoder (due to the max. encoder temperature)
2) Power connector and terminal box mutually exclude each other
3) Motor with terminal box, max. cross-section that can be connected, refer to Table "Connections for terminal boxes"
4) The shock hazard protection of the power cables depends on the size of the selected power module (refer to the
Configuration Manual, Drive Converters)
5) Motor with terminal box, power and signal cables, refer to Catalog, Chapter "MOTION-CONNECT connection sys-
tem"
6) 6FX8002 = MOTION-CONNECT 800;
6FX5002 = MOTION-CONNECT 500
7) Cables are supplied by the meter; length code, refer to the Configuration Manual "General Section for Synchronous
Motors"
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