64 Electrical installation
Daisy-chaining EIA/RS-485 transmission lines
Daisy-chaining is reliable and recommended when several inverters are connected to
Modbus over an EIA/RS485 transmission line.
When wiring a daisy-chain network to the inverter terminals, use suitable crimped
wire-end sleeves (with a maximum diameter of 2 mm) to join the wires together for a
reliable connection.
Data -
Termination resistor
120 ohm
Fieldbus
controller
Data +
Data -
COM
Inverter 1
COM
X2
S1:2 OFF
Inverter 2
Data +
COM
X2
S1:2 OFF
Inverter n
COM
X2
S1:2 OFF
Cable clamps
Data -
Data +
Data +
Data -
Only ground one end of the cable shield.
Do not use the cable shield as a functional ground.
Summary of Contents for PRO-33.0-TL Series
Page 1: ...ABB solar inverters Product manual PRO 33 0 TL string inverters ...
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Page 10: ...10 Table of contents ...
Page 32: ...32 Hardware description ...
Page 40: ...40 Installation requirements ...
Page 70: ...70 Electrical installation ...
Page 74: ...74 Installation checklist ...
Page 110: ...110 Maintenance ...
Page 134: ...134 Navigation map The navigation map ...
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