E6581315

6.2. Transmission format for inter-drive communication

Data type is handled in hexadecimal notation and the transmission characters are treated with the binary (HEX) code.

The transmission format is basically the same to the case of binary mode. S command is used and the slave inverters do not return the data.

„Master inverter → Slave inverter (Binary mode)

Omissible

(3.5bytes

“/”

 

INV-NO

CMD

 

Communication No.

DATA

SUM

(3.5bytes

Blank)

(2FH)

 

1 byte

1 byte

 

2 bytes

2 bytes

1 byte

Blank)

 

 

 

 

 

Checksum area

 

Not omissible

 

1) INV-NO (1 byte)

: Inverter number

 

 

 

 

 

This is always excluded at the master inverter side at time of inter-drive communication, and

 

 

can be added when the user utilize this data for the purpose of proportional operation.

 

 

(When this code is added, only the inverter concerned will accept the data.)

2)

CMD (1 byte)

: Command

 

 

53H(“S”) or 73(“s”) command ... command for inter-drive communication

 

 

When the master inverter is not tripping, this will be 53H(“S”).

 

 

When the master inverter is tripping, this will be 73H(“s”).

3)

Communication number (2 bytes) :

 

 

Specify “FA01” for two-wire RS485 communication.

 

 

Specify “FA05” for four-wire RS485 communication.

4)

DATA (2 bytes)

: Data of frequency command value.

 

 

(0000H to FFFFH (no range check))

As for the S command, see section 4.2 “Commands”, and see chapter “6 Inter-drive communication function” for the communication of inverters.

39

Page 39 Page 41
Page 40
Image 40
Toshiba RS485, VF-AS1 Series Transmission format for inter-drive communication, INV-NO 1 byte Inverter number
Page 39 Page 41

RS485, VF-AS1 Series specifications

The Toshiba VF-AS1 Series represents a significant advancement in the realm of variable frequency drives (VFDs), designed for various industrial applications that demand precision, efficiency, and reliability. With support for RS485 communication, the VF-AS1 Series fosters seamless integration into complex automation systems, making it the perfect choice for modern manufacturing environments.

One of the standout features of the Toshiba VF-AS1 Series is its versatile communication capabilities. The built-in RS485 port allows for easy connectivity with a range of devices, including PLCs (Programmable Logic Controllers) and HMIs (Human-Machine Interfaces). This ensures real-time monitoring and control of motor functions, enhancing operational efficiency and data analysis.

The VF-AS1 Series is engineered with advanced control technologies that provide exceptional motor performance. It incorporates vector control algorithms that optimize torque and speed regulation for both standard and permanent magnet motors. This results in precise motor control across a wide range of speeds and load conditions, ensuring optimum performance and energy savings.

Another noteworthy characteristic is its user-friendly interface. The VF-AS1 features a clear LCD display that allows for easy navigation and configuration. This intuitive design minimizes the learning curve for operators and technicians, facilitating quick setup and adjustments. Additionally, the series supports various programming options, catering to both novice users and experienced professionals.

Energy efficiency is a key priority in the design of the VF-AS1 Series. The drives are equipped with energy-saving features that help reduce overall power consumption and operational costs. With built-in sleep modes and dynamic energy feedback, these drives optimize energy usage based on demand, making them suitable for both constant and variable load applications.

In terms of safety and protection, the VF-AS1 Series incorporates various built-in safeguards, including overvoltage, undervoltage, and overcurrent protection. This comprehensive approach to safety not only protects the drive itself but also ensures the longevity of connected equipment.

Overall, the Toshiba VF-AS1 Series, with its robust feature set, advanced technologies, and focus on energy efficiency, proves to be a reliable choice for a wide range of industrial applications. Its integration of RS485 communication allows for enhanced connectivity and control, making it an excellent solution for modern automation needs.
Top Page Image Contents