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Engineering Guide CDA3000
2-35
2 Drive definition
DE
EN
1
2
3
4
5
6
7
A
2.5.2 Characteristic
values of asyn-
chronous servo-
motors ASx
(1) Pulse mode (2) Intermittent (3) Continuous
Figure 2.21
M-n characteristic for asynchronous motors
Abbreviations used
With incremental
encoder
Without incremental
encoder
Term
Explanation
M
0
Standstill torque
Thermal limit torque of the motor at standstill. The motor can
deliver this torque for an unlimited length of time.
I
0
Standstill current
Effective value of the motor phase current required to generate
the standstill torque.
M
N
Nominal torque
Thermal limit torque of the motor at nominal speed n
N
.
I
N
Rated current
Effective value of the motor phase current required to generate
the nominal torque.
P
N
Rated power
Full-load power of the motor at the nominal working point (M
N
,
n
N
) at rated current IN and rated voltage U
N
.
M
max
, I
max
Limit curve
A maximum of five times the rated current may be applied to
the motors.
5
4
3
2
1
2
3
M
0
N
M
M
max
M
4
n
N
n
n
N
M~
n
1
(A)
(1)
(2)
(3)
M
N
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