Technical Data and Characteristics
Speed-torque diagrams
1FT6 Synchronous Motors
3-2 Configuration Manual, (PFT6), 10.2005 Edition, 6SN1197-0AD02-0BP1
3.1.2 1FT6 series, natural cooling
Table 3-1 1FT6021 natural cooling
1FT6021
Technical data Code Units -6AK71
Engineering data
Rated speed n
N
rpm 6000
Number of poles 2p 6
Rated torque (100 K)
M
N(100 K)
Nm 0.3
Rated current (100K)
I
N
A1.1
Stall torque (60K)
M
0(60 K)
Nm 0.33
Stall torque (100K)
M
0(100 K)
Nm 0.40
Stall current (60K)
I
0(60 K)
A1.0
Stall current (100K)
I
0(100 K)
A1.25
Moment of inertia (with brake)
J
mot
10
–4
kgm
2
0.28
Moment of inertia (without brake)
J
mot
10
–4
kgm
2
0.21
Optimum operating point
Optimum speed
n
opt
rpm 6000
Optimum power
P
opt
kW 0.19
Limiting data
Max. permissible speed (mech.)
n
max
rpm 12000
Maximum torque
M
max
Nm 1.5
Maximum current
I
max
A5
Physical constants
Torque constant
k
T
Nm/A 0.32
Voltage constant
k
E
V/1000 rpm 20.5
Winding resistance at 20 °C
R
ph
Ohm 7.2
Rotating field inductance
L
D
mH 4
Electrical time constant
T
el
ms 0.56
Shaft torsional stiffness
c
t
Nm/rad 3000
Mechanical time constant
T
mech
ms 4.4
Thermal time constant
T
th
min 15
Weight with brake m kg 1.4
Weight without brake m kg 1.2
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