ABB PVS300 User Manual

Electrical installation 71
 Embedded fieldbus interface, terminal X4
 Embedded fieldbus interface, termination resistor switch
Pin Name Description
X4:1 Data + Inverter RS-485 transmit data
X4:2 Data - Inverter RS-485 receive data
X4:3 GND_A Functional ground, isolated
Switch Name Description
S1:1 BIAS_ENA Not used, default OFF
S1:2 TER_ENA 120 Ohm termination resistor enable, Switched ON at the end of
the embedded fieldbus network, default OFF
Termination resistor
120 ohm
Fieldbus
controller
A-
B+
COM
Inverter 1
1(+)
2(-)
3
X4
S1:2 OFF
External 120 ohm resistor is recommended
instead of the in-built resistor if the inverter
is not powered.
Inverter 2
1(+)
2(-)
3
X4
S1:2 OFF
Inverter 3
1(+)
2(-)
3
X4
S1:2 ON
Grounded nut insert

ABB PVS300 Specifications

General

Brand	ABB
Model	PVS300
Category	Inverter
Language	English