Dc Link/Motor Connection - Siemens SINAMICS S120 Manual

Motor Modules
6.2 Motor Modules Chassis-2
6.2.3.3

DC link/motor connection

Table 6- 25 DC link / motor connection of Motor Modules Chassis-2
Terminals
DCP, DCN
DC power input
U2, V2, W2
3 AC power output
PE connection
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
298
Technical specifications
Voltage:
• 510 ... 720 VDC
Connections:
• Frame size FS2, FS2+, FS4, FS4+: d = 14 mm (M12 / 50 Nm) flat connector for busbar connec-
tion
When connecting using copper busbars, the same cross-sections should be used as the connecting
busbars of the device itself:
• Frame size FS2: 70 mm x 4 mm
• Frame size FS2+: 70 mm x 6 mm
• Frame size FS4, FS4+: 80 mm x 8 mm
The DC link must be protected (fused) on the plant/system side.
Voltage:
• 3 AC 0 V to 0.75 x DC link voltage
Connecting thread:
• Frame size FS2, FS2+, FS4, FS4+: M12 / 50 Nm for cable lugs in accordance with DIN 46234 /
DIN 46235
2)
Connecting thread:
• Frame size FS2, FS2+, FS4, FS4+: M12 / 50 Nm for cable lugs in accordance with DIN 46234 /
DIN 46235
2)
WARNING
motor cables.
spring washer.
1)
Equipment Manual, 06/2020, 6SL3097-5AE00-0BP3
Air-cooled chassis power units