Selecting A Communication Mode - Huawei SUN2000-33KTL Quick Installation Manual

Positive metal terminal
Negative metal terminal
Common PV cables with a
cross-sectional area of 4 mm²
are recommended.
Ensure that the
locking nut is
secured.
Recommended: H4TW0001
(Amphenol)
NOTICE
1. Before connecting DC input power cables, mark the polarities on the cables to ensure that the
cables are connected correctly. If the cables are connected incorrectly, the device may be
damaged.
2. Check that DC input power cables will not be disconnected by pulling them.
3. If DC input power cables are reversely connected and the DC switch is ON, do not turn off the
DC SWITCH immediately. Otherwise, the equipment may be damaged. You can disconnect the
DC input power cable on the PV string side or wait until the PV string voltage reduces to a value
within the safety range. Then, turn off the DC SWITCH, remove the positive and negative
connectors, and rectify the connection.
2.4

Selecting a Communication Mode

Model
RS485
SUN2000-33KTL
(with PLC)
SUN2000-40KTL
(with PLC)
SUN2000-33KTL
(without PLC)
SUN2000-40KTL
(without PLC)
Recommended: H4TC0001
(Amphenol)
Ensure that cables cannot
be removed after crimped.
Positive connector
Negative
connector
Communication Mode
PLC
Supported Supported
Supported Supported
Not
Supported
supported
Not
Supported
supported
Click
Remarks
1. Only one communications mode can be
selected in application scenarios.
2. If the PLC communications mode is selected,
no device installation is required.
None.
None.
6