Dc Interface Incl. Pre-Charging For Booksize Cabinet Kits; Important Safety Precautions - Siemens SINAMICS S120 Device Manual
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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8.28.2
DC interface incl. pre-charging for Booksize Cabinet Kits
8.28.2.1
Important safety precautions
The Motor Module can be serviced after it has been disconnected from the DC busbar via
the DC interface and after the capacitor discharge time has elapsed. However, the following
safety precautions must be observed:
Risk of death resulting from failure to observe the general safety instructions and residual
risks
If the general safety instructions and residual risks are not observed, accidents can occur
causing serious injuries or death.
• Observe the general safety instructions.
• Take into account residual risks when assessing risks.
Risk of death from electric shock due to hazardous voltage
Once the DC busbar and the Motor Module in booksize format have been disconnected by
means of the fuse switch disconnector (-Q7), hazardous voltage continues to be present on
the adjacent Motor Modules in booksize format in the Cabinet Module as follows:
• Up to 800 V on the DC busbar (protected against accidental contact)
• Line voltage (380 to 480 V 3 ph. AC) via the auxiliary power supply system or
• Up to 230 V AC via the auxiliary power supply system or via direct infeed for SITOP and
• 24 V DC via the auxiliary power supply system (electronics power supply)
• At the motor connection (e.g. regenerative voltage due to residual speed)
Contact with live parts can result in death or serious injury.
• Assign only qualified specialists to carry out the work.
• Verify that the equipment is de-energized at the measuring points provided in the
• Verify the isolation from supply at the motor connections.
• Avoid any contact with the DC busbar when working close to the DC busbar in the
• Take care that screws or small parts do not fall into the cabinet when replacing
• Remove the fan fuse and the fuse for the 24 V DC supply.
Note
Compliance with legal regulations
You must observe the applicable legal regulations when carrying out all work.
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
8.28 L37, DC interface incl. pre-charging input circuit for the relevant DC link capacitance
WARNING
DANGER
230 V 2 ph. AC downstream of the transformers for the fan supply
fan supply
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