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Motor components and options
4.2 Options
4.2.1.3
Technical specifications
Table 4- 5
Technical specifications of the holding brakes
Motor type
Holding torque
at 120 °C
M
/ Nm
4
Permanent magnet brakes for 1FT7
1FT703☐
3
1FT704☐
8
1FT706☐
18
1FT708☐
48
1FT710☐
85
1FT713☐
140
1) Measured at 24.0 V
Note
Option N27 - holding brake with low moment of inertia
Information on option N27 can be found at Option N27 - Brake with low moment of inertia
(Page 96)
Note
If the brake is switched in two stages ("click" twice), then when opening, the first switching
point is decisive, and when closing, the second switching point is decisive.
I
t
t
o
t
c1
A
Figure 4-3
76
Dyn. Braking
DC current at
torque
M
/ Nm
1m
1.5
5
11
25
35
60
Current magnitude
Time
Opening time with varistor (measured at 24.0 V)
Closing time with varistor (measured at 24.0 V)
Brake open
Terminology (time) for holding operation
Opening time
20 °C
with varistor
I
t
/ A
/ ms
o
0.3
60
0.6
90
0.8
150
1.0
220
1.6
250
1.8
350
Configuration Manual, 09/2018, A5E45099423B AA
Closing time
Highest braking
with varistor
1)
1)
t
/ ms
c1
25
30
50
65
70
70
S-1FT7 synchronous motors
energy
W
/ J
30
270
880
1900
5300
9800
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