Siemens MASTERDRIVES MC 1FK7 - Page 44

Technical Data and Characteristics
Speed-torque diagrams 1FK7 CT
1FK7 Synchronous Motors
3-16 Configuration Manual (PFK7), 10/2005 Edition, 6SN1197-0AD06-0BP1
Table 3-8: 1FK7080 CT
Technical data Code Units –5AF71 –5AH71
Engineering data
Rated speed n
N
RPM 3000 4500
Number of poles 2p 8 8
Rated torque (100K)
M
N(100K)
Nm 6.8 4.5
Rated current
I
N
A4.44.7
Stall torque (60K)
M
0(60K)
Nm 6.6 6.6
Stall torque (100K)
M
0(100K)
Nm 8 8
Stall current (60K)
I
0 (60K)
A46.1
Stall current (100K)
I
0 (100K)
A4.87.4
Moment of inertia (with brake)
J
mot
10
–4
kgm
2
18.1 18.1
Moment of inertia (without brake)
J
mot
10
–4
kgm
2
15 15
Optimum operating point
Optimum speed
n
opt
RPM 3000 4000
Optimum power
P
opt
kW 2.14 2.39
Limiting data
Max. permissible speed (mech.)
n
max
RPM 6000 6000
Max. torque
M
max
Nm 25 25
Peak current
I
max
A1825
Physical constants
Torque constant
k
T
Nm/A 1.61 1.06
Voltage constant
k
E
V/1000 RPM 102.5 68.0
Winding resistance at 20 °C
R
ph
Ohm 1.04 0.44
Rotating field inductance
L
D
mH 14.0 6.3
Electrical time constant
T
el
ms 13.5 14.3
Shaft torsional stiffness
c
t
Nm/rad 126000 126000
Mechanical time constant
T
mech
ms 1.78 1.76
Thermal time constant
T
th
min 40 40
Weight with brake m kg 12.5 12.5
Weight without brake m kg 10 10