E6581315

7.3.Communication time-out time (), Communication time-out action (f804)

The timer function is mainly used to detect a break in a cable during communication, and if no data is sent to an inverter within the preset time, this function makes the inverter trip () or issue an alarm (). With the communication time-out action parameter (), you can specify what the inverter should do (trip, issue an alarm or do nothing) if a time-out occurs.

„How to set the timer

By default, the communication time-out time parameter () is set to  (OFF).

*Timer adjustment range

About 1 sec. (01H) to about 100 sec. (64H) / Timer off (0H)

„How to specify what an inverter should do if a time-out occurs

By default, the communication time-out action parameter () is set to  ( trip) for both 2-wire and 4-wire RS485 communication.

*Selection of time-out action (Range: 0 to 8 ... For details refer to “6. Communication parameters.) The action of the inverter at the occurrence of a time-out can be selected from among “do noth- ing,” “trip ()” and “alarm ()” individually for two-wire and four-wire RS485 communica- tion.

„How to start the timer

If the timer is set from the operation panel, it will start automatically the instant when communication is established for the first time after the setting.

If the timer is set from the computer, it will start automatically the instant when communication is established after the setting.

If the timer setting is stored in the EEPROM, the timer will start when communication is established for the first time after the power has been turned on.

Note that, if the inverter number does not match or if a format error occurs, preventing the inverter from returning data, the timer function will assume that no communication has taken place and will not start.

„How to disable the timer

To disable the timer, set its parameter to 0.

Ex.: To disable the timer function from the computer (To store the timer setting in the EEPROM)

Computer → Inverter

Inverter → Computer

(W08030)CR

(W08030000)CR

... Sets the timer parameter to 0 to disable it.

„Timer

Time-out period

Computer link

Inter-drive communication

PC → INV

Master INV

to Slave

INV

INV → PC

PC → INV

Master INV

to Slave

INV

The timer measures the time elapsed before the inverter ac- knowledges receipt of data after it acknowledged receipt of the previ- ous data.

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Toshiba RS485, VF-AS1 Series „ Timer Time-out period Computer link, Master INV To Slave, Inv Inv → Pc Pc → Inv
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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.
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