Siemens SIMOTICS S-1FT7 - Page 356

Technical data and characteristic curves
6.3 Data sheets and characteristics
S-1FT7 synchronous motors
354 Configuration Manual, 09/2018, A5E45099423B AA
Three-phase servomotor 1FT7085 - 7WH7
Technical specifications
Symbol
Unit
Value
Configuration data:
Rated speed
n
N
rpm
4500
Rated torque (100K)
M
N(100K)
Nm
33
Rated current (100K)
I
N(100K)
A
48
Static torque (100K)
M
0(100K)
Nm
43
Stall current (100K)
I
0(100K)
A
58
Static torque (60K)
M
0(60K)
Nm
34
Stall current (60K)
I
0(60K)
A
46
Optimum operating point:
Optimum speed
n
opt
rpm
4500
Optimum power
P
opt
kW
15.5
Limiting data:
Max. permissible speed (mech.)
n
max mech
rpm
8000
Maximum torque M
max
Nm 105
Maximum current
I
max
A
205
Motor data:
No. of poles
2p
8
Torque constant (100K)
k
T
Nm/A
0.74
Voltage constant (at 20 °C)
k
E
V/1000 rpm
47.5
Winding resistance (at 20 °C)
R
Str
W
0.046
Rotating field inductance
L
D
mH
1.2
Electrical time constant
T
el
ms
26
Mechanical time constant
T
mech
ms
0.5
Thermal time constant
T
th
min
10
Moment of inertia
J
mot
kgm
2 ,
10
-4
20.7
Shaft torsional stiffness
c
t
Nm/rad
70000
Weight
m
mot
kg
32
Motor data with integrated brake:
Moment of inertia (with brake)
J
mot
kgm
2 ,
10
-4
34.9
Shaft torsional stiffness (with brake)
c
t
Nm/rad
51000
Weight (with brake)
m
Mot
kg
35
Data with SINAMICS S120 Booksize:
Rated converter current I
N Inv
A 60
Maximum converter current
I
max Inv
A
120
Max. torque (converter operation) M
max Inv
Nm 79
Max. permissible speed (converter operation)
n
max Inv
rpm
8000
The rated data are valid for a 600 V DC-link voltage