Siemens MASTERDRIVES MC 1FK7 - Page 58

Technical Data and Characteristics
Speed-torque diagrams 1FK7 HD
1FK7 Synchronous Motors
3-30 Configuration Manual (PFK7), 10/2005 Edition, 6SN1197-0AD06-0BP1
Table 3-15: 1FK7043 HD
Technical data Code Units –7AH71 –7AK71
Engineering data
Rated speed n
N
RPM 4500 6000
Number of poles 2p 6 6
Rated torque (100K)
M
N(100K)
Nm 2.6 2
Rated current
I
N
A4.04.4
Stall torque (60K)
M
0(60K)
Nm 2.5 2.5
Stall torque (100K)
M
0(100K)
Nm 3.1 3.1
Stall current (60K)
I
0 (60K)
A3.64.8
Stall current (100K)
I
0 (100K)
A4.56.4
Moment of inertia (with brake)
J
mot
10
–4
kgm
2
1.14 1.14
Moment of inertia (without brake)
J
mot
10
–4
kgm
2
1.01 1.01
Optimum operating point
Optimum speed
n
opt
RPM 4500 6000
Optimum power
P
opt
kW 1.23 1.26
Limiting data
Max. permissible speed (mech.)
n
max
RPM 8000 8000
Max. torque
M
max
Nm 9.4 9.4
Peak current
I
max
A 14.8 20
Physical constants
Torque constant
k
T
Nm/A 0.67 0.48
Voltage constant
k
E
V/1000 RPM 44 32
Winding resistance at 20 °C
R
ph
Ohm 1.2 0.65
Rotating field inductance
L
D
mH 15 9
Electrical time constant
T
el
ms 12.5 13.8
Shaft torsional stiffness
c
t
Nm/rad 11000 11000
Mechanical time constant
T
mech
ms 0.81 0.85
Thermal time constant
T
th
min 40 40
Weight with brake m kg 7.0 7.0
Weight without brake m kg 6.3 6.3