Selecting A Communication Mode - Huawei SUN2000-55KTL Quick Manual

Positive metal terminal
Negative metal terminal
Recommended: PV cable
that meets the 1500 V
standard
NOTICE
If the voltage is a negative value, the DC input polarity is incorrect. Correct the polarity.

 If the voltage is greater than 1500 V DC, too many PV modules configured to the same string.
Remove some PV modules.
Only after at least one PV string correctly connects to the MPPT1 circuit, can the SUN2000

enables the DC input detection function. Therefore, you are advised to connect DC input power
cables to the MPPT1 circuit first.

Selecting a Communication Mode

4.5
The SUN2000 supports either PLC or RS485 communication mode.
NOTE
If PLC is used, you do not have to connect any communications cable to the SUN2000, but

have to connect the PLC CCO module or SmartLogger2000 to the AC power cable. For detailed
operations, see the PLC CCO01A User Manual or SmartLogger2000 User Manual.
If RS485 is used, do not connect the PLC CCO module to the AC power cable.

H4TC0001
(Amphenol)
Ensure that the cable
cannot be removed after
crimped.
Use a multimeter
to measure the
DC voltage.
11
Positive connector
Negative
Click
connector
Ensure
that the
locking
nut is
secured.
H4TW0005
（Amphenol）