Omron RX Series User Manual page 56

1 Overview
Change in Byte Order of Read/Write Function for Multiple Coils in
Modbus Communication
For Modbus communication, the inverter provides the function to read and write multiple coils for the
control of control I/O.
The byte order of this function was changed to be the same as that of the 3G3MX2 Series when
processing data larger than 1 byte. Previously the byte with the largest coil number was the first to be
processed, however, in the 3G3RX-V1 Series the byte with the smallest coil number is the first. This
enables the use of programs created via Modbus communication for both models.
Addition of the Dual Rating Function (Heavy Load and Light Load)
In addition to the conventional heavy load mode, the 3G3RX-V1 Series Inverter newly has the light load
mode to provide the dual rating function.
The light load mode is available for a fan, pump, or other device that operates at the rated motor torque
or less in a normal state. Setting the light load mode causes the rated current of the inverter to increase,
enabling the inverter to drive a motor that is one size larger in capacity.
However, pay attention to when selecting an inverter because the overload capacity decreases to
1 minute, 120% of the rated current.
Precautions for Correct Use Precautions for Correct Use
Switching between the heavy load mode and the light load mode changes the setting ranges and
default data of the related parameters. Refer to 5-2-2 Heavy Load/Light Load Selection on page
5-12 for details.
Implementation of the Programming Function
The 3G3RX-V1 Series has the buit-in simple sequence function (DriveProgramming), which enables a
stand-alone inverter to perform simple sequence control.
You can create programs easily in flowchart or text language method by using the CX-Drive.
For details, refer to "DriveProgramming User's Manual (I580)".
5-line LCD Digital Operator
This inverter supports the newly released LCD Digital Operator 3G3AX-OP05 with the 5-line display
capability. The LCD Digital Operator can display four monitor functions or parameter settings in the
selected language (currently English only), which effectively improves the readability of the device
status and other information.
In addition, the LCD Digital Operator can store up to four sets of inverter parameter setting data, or a
single set of inverter parameter setting data and a single DriveProgramming program in its internal
memory. This saves time when you set the same parameter or write the same program to more than
one inverter.
DI Board Not Supported
The 3G3RX-V1 Series Inverter does not support the OMRON DI Board (Model: 3G3AX-DI01).
Do not connect the DI Board (Model: 3G3AX-DI01).
1 - 26 High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)