Step 2: Pairing Power Optimizers to the SMI
Once all connections are made, all the power optimizers must be logically paired to
their SMI. The power optimizers do not start producing power until they are paired.
Perform this step before connecting the SMI to the inverter and when the modules are
exposed to sunlight. If the string length is changed or a power optimizer is replaced,
repeat the pairing process.
NOTE
Complete the pairing procedure before connecting the DC output of the SMI
to the inverter.
Make sure that the output DC wires between the SMI and the inverter, and
between the SMI and other SMIs are disconnected, otherwise the following
error is displayed, and the pairing process halts:
D i s c o n n e c t
O u t p u t
1. Perform pairing: Press and hold down the SMI LCD Light button for about 10
seconds. The following message is displayed:
K e e p h o l d i n g b u t t o n
f o r p a i r i n g , r e l e a s e
t o e n t e r m e n u . . .
R e m a i n i n g : 3 s e c
Keep holding for 5 seconds until the following is displayed:
P a i r i n g
T u r n S w i t c h T o O n
2. Turn the inverter ON/OFF switch to ON within 5 seconds. If you wait longer than 5
seconds the inverter exits the pairing mode. The following message is displayed
indicating that the inverter is performing the pairing:
P a i r i n g
R e m a i n i n g [ s e c ] : 1 8 0
Chapter 3: Commissioning the Installation
22
SMI-180 Installation Guide MAN-01-00157-1.1