Siemens MASTERDRIVES MC 1FK7 - Page 60

Technical Data and Characteristics
Speed-torque diagrams 1FK7 HD
1FK7 Synchronous Motors
3-32 Configuration Manual (PFK7), 10/2005 Edition, 6SN1197-0AD06-0BP1
Table 3-16: 1FK7044 HD
Technical data Code Units –7AF71 –7AH71
Engineering data
Rated speed n
N
RPM 3000 4500
Number of poles 2p 6 6
Rated torque (100K)
M
N(100K)
Nm 3.5 3.0
Rated current
I
N
A4.04.9
Stall torque (60K)
M
0(60K)
Nm 3.0 3.0
Stall torque (100K)
M
0(100K)
Nm 4.0 4.0
Stall current (60K)
I
0 (60K)
A3.44.6
Stall current (100K)
I
0 (100K)
A4.56.3
Moment of inertia (with brake)
J
mot
10
–4
kgm
2
1.41 1.41
Moment of inertia (without brake)
J
mot
10
–4
kgm
2
1.28 1.28
Optimum operating point
Optimum speed
n
opt
RPM 3000 4500
Optimum power
P
opt
kW 1.1 1.41
Limiting data
Max. permissible speed (mech.)
n
max
RPM 8000 8000
Max. torque
M
max
Nm 12 12
Peak current
I
max
A 14.8 20
Physical constants
Torque constant
k
T
Nm/A 0.86 0.63
Voltage constant
k
E
V/1000 RPM 57 42
Winding resistance at 20 °C
R
ph
Ohm 1.5 0.81
Rotating field inductance
L
D
mH 20 11
Electrical time constant
T
el
ms 13.3 13.5
Shaft torsional stiffness
c
t
Nm/rad 9500 9500
Mechanical time constant
T
mech
ms 0.78 0.78
Thermal time constant
T
th
min 45 45
Weight with brake m kg 8.3 8.3
Weight without brake m kg 7.7 7.7