Communication Wiring - YASKAWA Solectria PVI-36TL-480-V2 Installation And Operation Manual

Installation and Operation Guide SOLECTRIA® PVI 25TL-208, PVI 36TL-480-V2, PVI 50TL-480 and PVI 60TL-480
• Use shielded twisted pair as described in 4.4.3.
• It is recommended to limit the maximum length of the RS-485 daisy chain to a maximum length of 3000
feet (914 m). Additionally, no individual run should be longer than 300 ft. (91.4m).
Possible to connect and mix different models under same ENC card depending on model and firmware
•
version (contact technical support team)
When the inverters are monitored via the RS-485 communication, a unique RS-485 address for each inverter can
be set up through LCD interface. The Inverter Modbus IDs are configurable from 1 to 128. The daisy-chain
topology is recommended for the RS-485 network connection to minimize noise and bus reflections, as shown in
Figure 4-41 RS-485 Network Connection. Other communication topologies, such as the star networks, are not
recommended.
Datalogger
If there are multiple inverters in the RS-485 network, the selector switch S1 of the last inverter in the daisy-chain
should be in ON position, to have the 120Ω terminal resistor enabled. The selector switch S1 of all other inverters
should be in the OFF position to disable the terminal resistor.
Third-Party Data Acquisition System (DAS) Connection
Ethernet Only Connection: The PVI 25TL-208, PVI-36TL-480-V2, PVI 50TL-480, AND PVI 60TL-480 inverter only
supports RS485 connections to a 3rd party DAS.

Communication Wiring

1. Open the inverter wiring box. Refer to Section 4.3.1 for instructions and torque requirements when
replacing cover.
2. Bring the communication cables into the wiring box through the provided knockout holes at the bottom,
using similar methods to the AC and DC wiring. Conduit and knockouts must be sealed and water tight
to maintain the NEMA 4X rating.
3. Connect the RS485 wires to the P7 connector (network P7 and P9) ensuring correct polarity and using
a shielded twisted pair cable.
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
DOCR-071086-C (04/12/2024)
1 2
S402 S402
S1 S1
OFF OFF
Figure 4-41 RS-485 Network Connection
NOTICE!
N
S402
S1
ON
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