Siemens 1FT7 - 1 FT7 Synchronous Motors with Natural Cooling; Torque-Speed Characteristics

Technical data and characteristic curves
4.2 Torque-speed characteristics
1FT7 Synchronous Motors
80 Configuration Manual, (PFT7S) 01/2009, 6SN1197-0AD13-0BP2
4.2 Torque-speed characteristics
4.2.1 1FT7 synchronous motors with natural cooling
Table 4- 3 1FT7034-AK7
Technical data Code Unit Value
Configuration data
Rated speed n
r
rpm 6,000
Number of poles 2p --- 6
Rated torque (100 K) M
r (100 K)
Nm 1.4
Rated current I
r
A 2.1
Static torque (60 K) M
0 (60 K)
Nm 1.6
Static torque (100 K) M
0 (100 K)
Nm 2
Stall current (60 K) I
0 (60 K)
A 2.2
Stall current (100 K) I
0 (100 K)
A 2.7
Moment of inertia (with brake) J
MotBr
10
-4
kgm
2
0.98
Moment of inertia (without brake) J
mot
10
-4
kgm
2
0.85
Optimum operating point
Optimum speed n
opt
rpm 6,000
Optimum power P
opt
kW 0.88
Limiting data
Max. permissible speed (mech.) n
max mech.
rpm 10,000
Max. permissible speed (inverter) n
max Inv
rpm 10,000
Max. torque M
max
Nm 7.7
Maximum current I
max
A 11
Physical constants
Torque constant k
T
Nm/A 0.74
Voltage constant k
E
V/1,000 rpm 49
Winding resistance at 20 °C R
ph
Ω 2.4
Rotating field inductance L
D
mH 9.7
Electrical time constant T
el
ms 4.0
Mechanical time constant T
mech
ms 1.1
Thermal time constant T
th
min. 25
Shaft torsional stiffness c
t
Nm/rad 3,700
Weight with brake m
MotBr
kg 4.2
Weight without brake m
Mot
kg 3.8
Recommended Motor Module 6SL112-TE13-0AA
Rated inverter current I
r Inv
A 3
Maximum inverter current I
max Inv
A 6
Max. torque at I
max Inv
M
max Inv
Nm 4.3