SIEMENS
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Siemens D 21.4 · 2017
SIMOTICS servomotors
Technical definitions for AC motors
8
■
Overview
(continued)
Duty types S1 and S6 in accordance with EN 60034-1
Rated torque
The torque supplied on the shaft is indicated in Nm (lb
f
-ft) in the
selection and ordering data.
P
rated
Rated power in kW
n
rated
Rated speed in rpm
M
rated
Rated torque in Nm
P
rated
Rated power in hp
n
rated
Rated speed in rpm
M
rated
Rated torque in lb
f
-ft
DURIGNIT IR 2000 insulation
The DURIGNIT IR 2000 insulation system consists of high-quality
enamel wires and insulating sheeting in conjunction with solvent-
free resin impregnation.
The insulating material system ensures that these motors will
have a high mechanical and electrical stability, high service
value, and a long service life.
The insulation system protects the winding to a large degree
against aggressive gases, vapors, dust, oil, and increased air
humidity. It can withstand the usual vibration stressing.
Characteristic curves
Torque characteristic of a synchronous motor operating on a converter
with field weakening (example)
n
rated
Rated speed
n
max Inv
Maximum permissible electric speed limit
n
max mech
Maximum permissible mechanical speed limit
M
0
Static torque
M
rated
Rated torque at rated speed
M
max Inv
Achievable maximum torque with recommended
motor module
M
max
Maximum permissible torque
P
t
P
t
t
v
T
T
max
S1: Continuous duty
G_DA65_EN_00067
Output specification
(torque).
Designation: S1
Duty cycle under constant
load condition of sufficient
duration to establish thermal
equilibrium.
T
P
t
P
t
t
t
v
B
t
L
t
S
T
T
max.
= 10 min
s
t
L
t
+
B
t
B
t
=
r
t
S6: Continuous duty with intermittent loading
G_DA65_EN_00068
e.g.: S6 - 40 %, 85 kW
(114 HP)
Designation:
Duty cycle comprising a
sequence of identical duty
cycles, each of which consists
of a period of constant load
followed by an interval at no
load. There are no de-energized
intervals.
T
M
P
n
rated
rated
rated
=
×
×
955
1000
.
M
P
n
rated
rated
rated
=
×
5250
M
max
M
(100K)
M
0
0
G_D211_EN_00172
n
rated
Voltage limiting characteristic
depending on the winding design
and converter output voltage
Without field
weakening
(60K)
M
0
max Inv
M
max Inv
n
max mech
n
M
n(100K)
S1(100K)
S1(60K)
S3-60 %
S3-40 %
S3-25 %
Field
weakening
range
rpm
Nm
© Siemens AG 2017