Siemens SIMOTICS T-1FW3 - Page 161

Technical data and characteristics
6.1 Explanations
1FW3 complete torque motors
Configuration Manual, 08/2020, A5E46027705B AA
159
Calculating the new limit torque with the new limiting characteristic
①
Voltage limit charact
eristic for U
Mot
②
New voltage limit characteristic for U
Mot, new
P1
Intersection of the voltage limiting characteristic on the x axis; calculate speed n
1
.
P2
Intersection of the new voltage limiting characteristic on the x axis; calculate speed n
2
P3
At n
N
draw a line vertically upwards, up to the voltage limiting characteristic. This point
of intersection is P3. On the left-hand side, read off M
limit
.
P4
In order to determine P4, M
limit, new
must first be calculated.
P4 is the intersection of M
limit, new
and n
N
. The new voltage limiting characteristic is obtained
by connecting P2 and P4.