Siemens SIMOTICS S-1FT7 - 1 Ft7108-_S

Technical data and characteristic curves
6.3 Data sheets and characteristics
S-1FT7 synchronous motors
248 Configuration Manual, 09/2018, A5E45099423B AA
6.3.2.4
1FT7108-_S
Three-phase servomotor 1FT7108 - 5SC7
Technical specifications
Symbol
Unit
Value
Configuration data:
Rated speed
n
N
rpm
2000
Rated torque (100K)
M
N(100K)
Nm
73
Rated current (100K)
I
N(100K)
A
33
Static torque (100K)
M
0(100K)
Nm
91
Stall current (100K)
I
0(100K)
A
39
Static torque (60K)
M
0(60K)
Nm
74
Stall current (60K)
I
0(60K)
A
32
Optimum operating point:
Optimum speed
n
opt
rpm
2000
Optimum power
P
opt
kW
15.3
Limiting data:
Max. permissible speed (mech.)
n
max mech
rpm
6000
Maximum torque M
max
Nm 280
Maximum current
I
max
A
142
Motor data:
No. of poles
2p
10
Torque constant (100K)
k
T
Nm/A
2.32
Voltage constant (at 20 °C)
k
E
V/1000 rpm
148
Winding resistance (at 20 °C)
R
Str
W
0.085
Rotating field inductance
L
D
mH
2.35
Electrical time constant
T
el
ms
28
Mechanical time constant
T
mech
ms
1.2
Thermal time constant
T
th
min
60
Moment of inertia
J
mot
kgm
2 ,
10
-4
248
Shaft torsional stiffness
c
t
Nm/rad
126000
Weight
m
mot
kg
64
Motor data with integrated brake:
Moment of inertia (with brake)
J
mot
kgm
2 ,
10
-4
276
Shaft torsional stiffness (with brake)
c
t
Nm/rad
96000
Weight (with brake)
m
Mot
kg
70
Data with SINAMICS S120 Booksize:
Rated converter current I
N Inv
A 45
Maximum converter current
I
max Inv
A
90
Max. torque (converter operation) M
max Inv
Nm 197.5
Max. permissible speed (converter operation)
n
max Inv
rpm
3900
The rated data are valid for a 600 V DC-link voltage