Manual AEG Protect PV - Solar Inverters (page 32 of 33) (English)

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5.1.4. RS485 Communication Board Connections

Illustration 5.7: RS485 Detail of Communication Board.

BIAS L and Bias H are to be connected to RX/TX B and RX/TX A respectively for termination of

RS485 bus.

Pinout RS-485 Pinout Ethernet only, via the

RJ45 connector

1. GND 1. RX+

2. GND 2. RX

3. RX/TX A (-) 3. TX+

4. BIAS L 4.

5. BIAS H 5.

6. RX/TX B (+) 6. TX-

7. Not connected 7.

8. Not connected 8.

Bold = Compulsory, Cat5 cable contains all 8 wires

For Ethernet: 10Base-TX and 100Base-TX auto cross over

Table 5.10: RJ45 Pinout Detail

Note:

The RS485 communication bus must be terminated at both cable ends.

Note:

The two network types cannot be mixed. The inverters can only be connected in networks

which are either solely RS485 or solely Ethernet.

Note:

Each inverter has a unique RS485 address when it is delivered. This address is defined at the

time of production.

Note:

Ethernet connection is recommended for faster communication.

RS485 connection is required when a web logger or data logger is connected to the inverter.

5. Technical Data

8000038781_00_BAL_en / L00410564-01_02 31

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AEG Protect PV - Solar Inverters Manual

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