SMA RS485-Quick Module - Manual (Page 28)

Assembly SMA America, LLC
28 RS485-QM-IA-eng-IUS111610 Installation Guide
5.8 Closing the SMA DC-Disconnect and Commissioning the
Inverter
1. Check the cable routing to ensure that no cable impedes the cover seal and that the cover does
not apply pressure to the connections when it is screwed down.
2. Check all of the knockout fittings of the SMA DC-Disconnect and make sure that they provide a
weather-tight seal.
3. Place the cover of the SMA DC-Disconnect onto the
enclosure.
– Make sure that the handle in the cover of the
SMA DC-Disconnect snaps into the switch of the
SMA DC-Disconnect.
– Make sure that the upper edge of the
SMA DC-Disconnect is covered by the lower
edge of the inverter.
– Ensure that the two holes in the cover are
aligned exactly to the two threaded holes in the
enclosure.
4. Insert the two screws of the cover into the threaded
holes of the enclosure and hand tighten them. The
teeth of the tab washers must point downwards.
Be careful not to cross-thread any of the screws.
Do not use power tools to tighten the screws.
5. Ensure that the cover is correctly positioned.
6. Tighten the cover screws to a torque of 53 in-lbs. (6 Nm).
Be careful not to cross-thread any of the screws.
Do not use power tools to tighten the screws.
☑ The SMA DC-Disconnect is closed.
7. If the multi-function relay is connected: switch on the multi-function relay supply voltage.
8. Turn the DC disconnecting switch of the
SMA DC-Disconnect to the "On" position.
9. Switch-on the AC switch.
☑ The inverter is in operation. Successful commissioning
is indicated by a glowing or blinking green LED.