1FT5
08.95
1FT5/1-6
Siemens AG 1997 All Rights reserved 6SN1197–0AA20
SIMODRIVE 611 (PJ)
1.2 Functions and options
Definition, refer to Chapter 3 General information on AC servomotors AL S.
Brake resistors
The optimum braking time is achieved with the design. The braking torques
which are obtained are also listed in the tables. The data is valid when braking
from the rated speed. If the drive brakes from another speed, then the braking
time cannot be linearly interpolated. However, the braking times either remain
the same or are shorter.
The rating of the resistors must be harmonized with the I
2
t load capability, refer
to Chapter 3. General information on AC servomotors AL S.
Table 1-3 Resistor braking for motors 1FT5, shaft heights 36 and 48
Motor type
External
brake
resistor
R
opt
[Ω]
Average brak-
ing torque
M
br
rms
[Nm]
Max. braking
torque
M
br
max
[Nm]
RMS
braking
current
I
br
rms
[A]
1FT5034–VAK71 –
4.7
1.5
1.5
1.9 4.1
3.9
1FT5036–VAK71 –
4.7
2.3
2.4
3.0 6.6
6.2
1FT5042–VAF71
1FT5042–VAK71
–
–
7.8
1.8
1.7
1.8
2.3
2.3
2.7
4.8
4.5
1FT5044–VAF71
1FT5044–0AK71
–
2.8
–
5.9
3.6
3.7
2.9
3.6
4.5
4.5
6.0
5.8
10.0
9.2
1FT5046–VAF71
1FT5046–VAK71
–
2.7
–
3.4
6.9
7.6
4.9
7.2
9.4
9.1
12.8
11.9
20.6
18.6
Armature short–
circuit braking
1FT5 AC servomotors
1.2 Functions and options 10.96
To Next Page
Loading...
Need help?
General