Siemens simovert masterdrives Compendium

Engineering Information 06.2005
6SE7087-6QX70 (Version AE) Siemens AG
11-40 Compendium Motion Control SIMOVERT MASTERDRIVES
M/Nm
n
mean
M
eff
0
2
4
14
500 1000 3000
n/min
-1
1500 2000 2500
6
10
12
8
Fig. 11-21 S1 curve for the 1FT6082-8AF7
The calculated effective motor torque at n
mean
is below the S1 curve.
The motor is therefore suitable.
The inverter is selected according to the maximum motor current and
the mean motor current.
♦ Maximum motor current (the saturation influence here can be
ignored)
I
M
k
A
Mot
Mot
Tn
max
max
.
.
≈==
100
16 57
118
14
♦ Mean motor current, obtained from the magnitude of the torque
characteristic
I
Mot mean
≈
⋅
⋅
∑
Mt
kT
Mot i i
Tn
∆
100
=
⋅+ ⋅+ ⋅+ ⋅+ ⋅+ ⋅
⋅
=
16 58 0 6 1147 0 3 6 37 0 6 4 08 0 6 8 39 0 3 127 0 6
118 7
36
.. ........ ..
.
.A
♦ A 6SE7021-0TP50 Compact PLUS inverter is necessary with
I
Un
=10.2 A. Since the acceleration and deceleration times are
> 0.25 s, only 1.6 times the rated current can be utilized. Thus
IA
Mot max
= 14
< 16 16. ⋅=IA
Un
IA
Mot mean
= 36.
< IA
Un
= 10 2.
5. Selection of the
inverter

Siemens simovert masterdrives Specifications

General

Brand	Siemens
Model	simovert masterdrives
Category	DC Drives
Language	English