Siemens MASTERDRIVES MC 1FK7 - Page 38

Technical Data and Characteristics
Speed-torque diagrams 1FK7 CT
1FK7 Synchronous Motors
3-10 Configuration Manual (PFK7), 10/2005 Edition, 6SN1197-0AD06-0BP1
Table 3-5: 1FK7042 CT
Technical data Code Units –5AF71 –5AK71
Engineering data
Rated speed n
N
RPM 3000 6000
Number of poles 2p 8 8
Rated torque (100K)
M
N(100K)
Nm 2.6 1.5
Rated current
I
N
A1.952.45
Stall torque (60K)
M
0(60K)
Nm 2.5 2.5
Stall torque (100K)
M
0(100K)
Nm 3.0 3.0
Stall current (60K)
I
0 (60K)
A1.83.6
Stall current (100K)
I
0 (100K)
A2.24.4
Moment of inertia (with brake)
J
mot
10
–4
kgm
2
3.73 3.73
Moment of inertia (without brake)
J
mot
10
–4
kgm
2
3.01 3.01
Optimum operating point
Optimum speed
n
opt
RPM 3000 5000
Optimum power
P
opt
kW 0.82 1.02
Limiting data
Max. permissible speed (mech.)
n
max
RPM 90000 9000
Max. torque
M
max
Nm 10.5 10.5
Peak current
I
max
A7.3515.3
Physical constants
Torque constant
k
T
Nm/A 1.4 0.69
Voltage constant
k
E
V/1000 RPM 89 44
Winding resistance at 20 °C
R
ph
Ohm 5.15 1.2
Rotating field inductance
L
D
mH 29 6.7
Electrical time constant
T
el
ms 5.6 5.6
Shaft torsional stiffness
c
t
Nm/rad 16000 16000
Mechanical time constant
T
mech
ms 2.37 2.27
Thermal time constant
T
th
min 30 30
Weight with brake m kg 5.4 5.4
Weight without brake m kg 4.9 4.9