Siemens SIMOTICS S-1FT7 - Page 316

Technical data and characteristic curves
6.3 Data sheets and characteristics
S-1FT7 synchronous motors
314 Configuration Manual, 09/2018, A5E45099423B AA
Three-phase servomotor 1FT7108-5WC7
Technical specifications
Symbol
Unit
Value
Configuration data:
Rated speed
n
N
rpm
2000
Rated torque (100K)
M
N(100K)
Nm
125
Rated current (100K)
I
N(100K)
A
47.5
Static torque (100K)
M
0(100K)
Nm
125
Stall current (100K)
I
0(100K)
A
45.3
Static torque (60K)
M
0(60K)
Nm
100
Stall current (60K)
I
0(60K)
A
37.2
Optimum operating point:
Optimum speed
n
opt
rpm
2000
Optimum power
P
opt
kW
26.2
Limiting data:
Max. permissible speed (mech.)
n
max mech
rpm
6000
Maximum torque M
max
Nm 330
Maximum current
I
max
A
141.5
Motor data:
No. of poles
2p
10
Torque constant (100K)
k
T
Nm/A
2.69
Voltage constant (at 20 °C)
k
E
V/1000 rpm
170.0
Winding resistance (at 20 °C)
R
Str
W
0.084
Rotating field inductance
L
D
mH
1.93
Electrical time constant
T
el
ms
23
Mechanical time constant
T
mech
ms
0.9
Thermal time constant
T
th
min
1.5
Moment of inertia
J
mot
kgm
2
265
Shaft torsional stiffness
c
tMot
Nm/rad
126000
Weight
m
mot
kg
68.6
Motor data with integrated brake:
Moment of inertia (with brake)
J
mot
kgm
2
291
Shaft torsional stiffness
c
tMot
Nm/rad
96000
Weight (with brake)
m
Mot
kg
72.9
Data with SINAMICS S120 Booksize
Rated converter current I
N Inv
A 45
Maximum converter current
I
max Inv
A
90
Max. torque at I
max_Inv
M
max Inv
Nm 224
Max. permissible speed (converter oper-
ation)
n
max Inv
rpm 3400
The rated data are valid for a 600 V DC-link voltage