12
• If the voltage is a negative value, the DC input polarity is incorrect. Correct the polarity.
• If the voltage is greater than 1100 V DC, too many PV modules are configured to the same
string. Remove some PV modules.
Installing the RS485 Communications Cable
4.6
• When routing communications cables, separate communications cables from power cables to
prevent communication from being affected.
• An RS485 cable can connect to either a terminal block or an RJ45 network port. It is
recommended that the RS485 cable connect to a terminal block.
Positive metal contact
Negative metal contact
Recommended: PV cable
that meets the 1100 V
standard.
H4TC0003
(Amphenol)
Ensure that the cable
cannot be removed after
crimped.
Positive connector
Negative
connector
Click
Click
Use a multimeter
to measure the
DC voltage.
Ensure that
the locking
nut is
secured.
H4TW0001
(Amphenol)
Installing a DC Input Power Cable (Using Metal Stamping Forming Contacts)
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