Siemens MASTERDRIVES MC 1FK7 - Page 54

Technical Data and Characteristics
Speed-torque diagrams 1FK7 CT
1FK7 Synchronous Motors
3-26 Configuration Manual (PFK7), 10/2005 Edition, 6SN1197-0AD06-0BP1
Table 3-13: 1FK7105 CT
Technical data Code Units –5AC7 –5AF7
Engineering data
Rated speed n
N
RPM 2000 3000
Number of poles 2p 8 8
Rated torque (100K)
M
N(100K)
Nm 37 26
Rated current
I
N
A1618
Stall torque (60K)
M
0(60K)
Nm 40 40
Stall torque (100K)
M
0(100K)
Nm 48 48
Stall current (60K)
I
0 (60K)
A1725
Stall current (100K)
I
0 (100K)
A2031
Moment of inertia (with brake)
J
mot
10
–4
kgm
2
169 169
Moment of inertia (without brake)
J
mot
10
–4
kgm
2
156 156
Optimum operating point
Optimum speed
n
opt
RPM 2000 3000
Optimum power
P
opt
kW 7.75
8.17
Limiting data
Max. permissible speed (mech.)
n
max
RPM 5000 5000
Max. torque
M
max
Nm 150 150
Peak current
I
max
A72109
Physical constants
Torque constant
k
T
Nm/A 2.37 1.57
Voltage constant
k
E
V/1000 RPM 151 100
Winding resistance at 20 °C
R
ph
Ohm 0.17 0.074
Rotating field inductance
L
D
mH 4.4 1.9
Electrical time constant
T
el
ms 26 26
Shaft torsional stiffness
c
t
Nm/rad 125000 125000
Mechanical time constant
T
mech
ms 14.2 14.1
Thermal time constant
T
th
min 70 70
Weight with brake m kg 41.5 41.5
Weight without brake m kg 39.1 39.1