Dc Link/Motor Connection - Siemens SINAMICS S120 Equipment Manual

7.3.3

DC link/motor connection

Table 7- 1 DC link / motor connection of Motor Modules Chassis-2
Terminals Technical specifications
DCP, DCN Voltage:
DC power input
•
Connections:
•
When connecting using copper busbars, the same cross-sections should be used as the connecting
busbars of the device itself:
•
•
The DC link must be protected (fused) on the plant/system side.
U2, V2, W2 Voltage:
3 AC power output
•
Connecting thread:
•
PE connection Connecting thread:
•
For pure space vector modulation, a factor of approximately 0.70 ... 0.72 applies.
1)
For edge modulation, a factor of approximately 0.74 ... 0.75.
Dimensions for connecting alternative cable lugs, see "Cable lugs for devices with Chassis-2 design" in the Appendix.
2)
Electric shock if unsuitable screws are used to connect the motor
The plastic enclosure behind the motor connections can be damaged if screws longer than
40 mm are used. This represents danger to life, and equipment can be damaged.
• Only use the original M12x40 screws, including the spring washer, when connecting the
• If you have to replace screws, then only use screws with the same length. Always use a
Air-cooled chassis power units
Manual, 07/2019, 6SL3097-4AE00-0BP9
510 ... 720 VDC
Frame size FS2, FS4: d = 14 mm (M12 / 50 Nm) flat connector for busbar connection
Frame size FS2
– 6SL3321-1TE36-6AA0 (315 kW): 70 mm x 4 mm
– 6SL3321-1TE37-4AA0 (355 kW): 70 mm x 6 mm
Frame size FS4: 80 mm x 8 mm
3 AC 0 V to 0.75 x DC link voltage
Frame size FS2, FS4: M12 / 50 Nm for cable lugs in accordance with DIN 46234 / DIN 46235
Frame size FS2, FS4: M12 / 50 Nm for cable lugs in accordance with DIN 46234 / DIN 46235
WARNING
motor cables.
spring washer.
1)
Motor Modules Chassis-2
7.3 Interface description
2)
2)
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