Communication Function
353
11.3
Communication System Configuration
In an RS-485 communication system, the PLC or computer is the master device and the inverter
is the slave device. When using a computer as the master, the RS-232 converter must be
integrated with the computer, so that it can communicate with the inverter through the RS-
232/RS-485 converter. Specifications and performance of converters may vary depending on
the manufacturer, but the basic functions are identical. Please refer to the converter
manufacturer’s user manual for details about features and specifications.
Connect the wires and configure the communication parameters on the inverter by referring to
the following illustration of the communication system configuration.
•
RS-485 terminal connection: Connect the RS-485 communication line to the S+/S-/SG
terminals.
•
Number of connectable inverters: Up to 16 inverters
•
Number of extendable addresses (St ID): 1
–
250 addresses
•
Length of effective communication lines: 1,200 m max. Keep it below 700 m for stable
communication.
When wiring the communication line, make sure that the SG terminals on the PLC and inverter are
connected. SG terminals prevent communication errors due to electronic noise interference.
Use a communication repeater to enhance the communication speed if you have to use a
communication cable above 1,200 m, or to connect an additional inverter. A repeater is
effective when smooth communication is not available due to noise interference.
Содержание SV-iS7 Series
Страница 17: ......
Страница 22: ...About the Product 5 1 2 2 Interior and Exterior View IP 54 Model Types Less than 22 kW 200 400 V ...
Страница 114: ...Peripheral Devices 97 Group 2 ...
Страница 115: ...Peripheral Devices 98 Group 3 ...
Страница 116: ...Peripheral Devices 99 Group 4 ...
Страница 153: ...Using the Keypad 136 The Parameter Initialization option is displayed again when the initialization is complete ...
Страница 159: ...Basic Functions 142 Code Description V1 Quantizing ...
Страница 465: ...Safety Funtion STO Safe Torque Off 448 14 2 1 Safety Function Wiring Diagram ...