Power Losses Of The Components; Typical Power Losses For Motor Modules - Siemens SINAMICS S120 Manual

Cabinet design

6.12 Power losses of the components

6.12 Power losses of the components
6.12.1

Typical power losses for Motor Modules

The information on the power losses in the previous chapters are maximum values, which
occur in the most unfavorable case. For typical applications, the losses are lower.
The following applies as typical application:
● Motor cable length 30 m
● 4 kHz pulse frequency
● DC link voltage 540 V - 600 V
The power loss for typical applications can be calculated using the following formula:
P [W] = a + S
V
a
S , S
1
I
1
I
2
Overview of required coefficients
Table 6- 15
Motor Module
Single Motor Module 3 A
Single Motor Module 5 A
Single Motor Module 9 A
Single Motor Module 18 A
Single Motor Module 24 A
Single Motor Module 30 A
Single Motor Module 45 A
Single Motor Module 60 A
Double Motor Module 2 x 3 A
Double Motor Module 2 x 5 A
Double Motor Module 2 x 9 A
Double Motor Module 2 x 18 A
134
· (I + I ) + S
1 1 2
Electronics losses of the Motor Module
Coefficients to calculate power loss
2
Current (arithmetic mean value) of the 1st axis
Current (arithmetic mean value) of the 2nd axis
Coefficients to calculate the power loss in the control cabinet for internally cooled Motor
Modules for typical applications
· (I + I )
1 2 2 2
2
a [W]
14
14
14
14
24
20
22
22
19
19
19
22
S [W/A] S
1 2
3.29 0.205
3.29 0.205
3.29 0.205
3.29 0.205
3.50 0.140
4.71 0.113
4.40 0.060
4.00 0.055
5.20 0.200
5.20 0.200
5.18 0.247
5.57 0.091
Power Units in Booksize C/D-Type Format
Manual, 12/2018, 6SL3097-5AC20-0BP0
[W/A ]
2