SMA SUNNY BOY 3.8-US - Page 12

5 Mounting the New Power Unit
Service ManualSBxx-1SP-US-40-AT-PU-SG-xx-1312
7. If the inverter is to be protected against theft, attach
a padlock: To do this, guide the shackle of the
padlock through the provided hole on the left side
of the Power Unit and close the shackle. Keep the
key of the padlock in a safe place.
8. Pull the ribbon cable used to connect the
communication assembly to the PowerUnit into the
ConnectionUnit, and plug it into the jack on the
communication assembly.
COM
SPS
AC-out
D-IN
SPS
A B
M1
X1 X2
M2
ANT.
FCC ID: SVF-KP20
IC: 9440A-KP20
9. Plug the terminal block with the connected DC
conductors into slot DC-in in the Connection Unit.
While doing so, only touch the terminal block on the
black enclosure.
COM
DC-in
1
2
A+ B+ C+ A− B C−
−
A+ B+ C+ A− B− C−
10.
DANGER
Danger to life due to electric arc
The terminal block must be fastened to the slot with 2 screws. If the terminal block is not
correctly mounted and comes out of the slot, an electric arc can form. An electric arc can
cause life-threatening injuries.
• Mount the terminal block on the slot as described in the following.
11. Tighten (torque: 1.7Nm ± 0.3 Nm (15.05in-lb ±
2.65in-lb)) the screws of the terminal block using a
flat-blade screwdriver (blade width: 3.5mm).
12. Ensure that the terminal block is securely in place.
ENGLISH