Siemens SINAMICS S120 Manual page 523

Connecting the braking unit to the DC link adapter or DC link rectifier adapter
1. Connect the C/L+ connection on the braking unit to the DCP terminal on the DC link
rectifier adapter or DC link adapter.
2. Connect the D/L- connection on the braking unit to the DCN terminal on the DC link
rectifier adapter or DC link adapter.
3. Connect the protective conductor between the S120 drive line-up and the braking unit.
According to diagram "Grounding concept SINAMICS S120 Booksize" (Page 736) the
cross-section of the protective conductor connection must be 6 mm
The connecting cable between the braking unit and the DC link rectifier adapter or DC link
adapter must be dimensioned with a cross-section of 95 mm
1 (short-circuit-proof cable routing). The electric strength of the cable must be rated to the
line voltage. The maximum permissible length of the connecting cables to the DC link is 3 m.
NOTICE
Damage to the drive units or DC link terminals by interchanging or short-circuiting the DC
link terminals
The drive equipment or braking unit may be damaged if the DC link terminals are
interchanged or short-circuited.
• Carefully ensure that the DC link terminals are correctly connected.
• Do not short-circuit the DC link terminals.
Risk of burns as a result of the high braking unit temperature
The air discharge temperature of the braking units and the housing can become very hot.
You can be slightly injured if you come into contact with them.
• Avoid coming into contact with the discharged air and the housing of the braking units.
• Mount the motor braking units so that they cannot be touched. If this is not possible,
• To prevent adjacent components from being damaged due to these high temperatures,
Booksize Power Units
Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8
CAUTION
attach a clearly visible and understandable warning notice at hazardous positions.
maintain a clearance around all sides of the braking units.
8.4 Braking units for 100 kW Basic Line Modules
in accordance with EN 60439-
2
DC link components
.
2
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