Siemens simovert masterdrives

06.2005 Engineering Information
Siemens AG 6SE7087-6QX70 (Version AE)
SIMOVERT MASTERDRIVES Compendium Motion Control 11-33
0.25 s
1 s
0.25 s
P
Mot
t
7.09 kW
0.734 kW
-4.53 kW
Negative area corresponds to regenerative
operation
3.5 s
Fig. 11-17 Characteristic of the motor output for forwards travel
♦ The maximum DC link current during operation of the motor during
acceleration is
I
P
U
Link Inv
Mot
Mot Inv line
max
max
.
=
⋅⋅⋅ηη135
=
⋅⋅⋅
=
7090
0 92 0 98 135 400
14 56
...
.A
♦ The mean motor power output during operation of the motor is
calculated from the positive characteristic of the motor power output
as follows:
P
PP
t
T
Mot mean
Mot A Mot E
i
=
+
⋅
′
∑
2
∆
=
⋅⋅+ ⋅
=
1
2
709 025 0734 1
35
0 463
.. .
.
.kW
♦ The mean value of the DC link current is therefore:
I
P
U
Link mean
Mot mean
Mot Inv Line
=
⋅⋅⋅ηη135.
=
⋅⋅⋅
=
463
0 92 0 98 135 400
095
...
.A