SMA SC 500CP-US Maintenance Manual - Manual (Page 22)

5 Maintenance with DC, AC and Control Voltage Present SMA America, LLC
22 SCCP-US-WH-US_en-30 Maintenance Manual
Figure 5: Position of the DC contactor
Requirements:
☐ Control voltage must be present.
☐ DC voltage must be present.
Procedure:
1. Switch the inverter to Stop. By doing so, the DC contactor is
audibly switched off.
2. Open the doors of the interface cabinet.
3. Check the switching state of the DC contactor.
☑ The DC contactor is switched off.
✖ The DC contactor does not switch off?
• Contact the SMA Service Line.
4. Close the doors of the interface cabinet.
5. Switch the key switch of the inverter to Start.
Position Designation
A DC contactor