PVI 50/60 TL Installation and Operation Manual (Rev C)
DOCR-070645-E
Page 52 of 102
4.
If the inverter is the
last
Modbus device in the daisy chain
and
the inverter without the
Ethernet Network Card, make sure the Modbus termination switch S1 is in the ON
position, enabling Modbus termination. Ensure the switch is in the OFF position for all
other inverters in the daisy chain, including the one where the Ethernet Network Card
is installed.
S1 - Selector switch for the
120Ω RS-485 termination
resistor
On
- Enable the Modbus
(RS-485) bus termination
(Applies only for the last
inverter in the daisy chain)
Off
- Disable the Modbus
(RS-485) bus termination.
(Factory default)
Figure 2-45 - The Modbus (RS485) Termination Switch (S1) Location and Settings on the
LCD/Communication Board.
5.
Close the wiring box.
6.
Reconnect the AC and DC power and turn the inverter on when it is safe.
7.
Configure the Inverter Modbus ID and Baud rate.
2.4.2 Preparing the Inverter for Modbus Communications
To ensure correct Modbus communications, each inverter Modbus communications settings
need to be configured properly. Please follow the steps below to adjust the inverter Modbus ID
and Modbus Baud rate.
Please refer to “
3.2 Commissioning Steps
”
WARNING:
Risk of Electric Shock.
Make sure all shield wires are properly secured and insulated to prevent shorting
to any other components inside the inverter.
