Interface Description; X3 Dc Link Connection - Siemens SINAMICS S120 Manual

DC link components
8.4 Braking units for 100 kW Basic Line Modules
NOTICE
Device failure as a result of unshielded or incorrectly routed cables to braking resistors
Unshielded or incorrectly routed cables to braking resistors can result in interference being
coupled into the signal processing electronics from the power side. This can result in
significant disturbance of all signals (fault messages) up to failure of individual components
(destruction of the devices).
• Only use shielded cables for cables to braking resistors.
Note
Note the starting time for the electronics
The electronics of the Braking Module is supplied from the DC link. As long as no DC link
voltage is present (< 360 V ± 2%), the electronics are not active and an external control or
the Control Unit receives the "fault" signal from the fault output. This means that it is not just
the 2 seconds that has to be taken into account, which the electronics requires to run up as
soon as the DC link voltage is present.
NOTICE
Danger to life through the use of non-approved braking resistors
Braking resistors can be damaged when using braking resistors other than those specified
in this Manual.
• Only use braking resistors approved by Siemens.
8.4.3

Interface description

8.4.3.1

X3 DC link connection

Table 8- 18 X3: Connection for the DC link
Connection/Meaning
C/L+ input (plus DC link)
D/L- input (minus DC link)
Protective conductor
Shield connection
Connection via
AWG
518
Remarks
Busbar C/L+
Busbar D/L
Busbar PE
M6 bolts at top of housing
Cable lug without insulation (Page 732)
With shrink-on sleeve
Cable is connected using the supplied M8 x 25 screws
Max. 2/0
Tightening torque [Nm]
16
16
16
8
Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8