E6581315

Appendix 4 Troubleshooting

If a problem arises, diagnose it in accordance with the following table before making a service call. If the problem cannot be solved by any remedy described in the table or if no remedy to the problem is specified in the table, contact your Toshiba dealer.

Problem

 

 

Remedies

Reference

 

 

 

 

 

 

 

Communication

will

not

take

- Are both the computer and the inverter turned on?

 

 

place.

 

 

 

- Are all cables connected correctly and securely?

 

 

 

 

 

 

- Are the same baud rate, parity and bit length set for every unit on the

Chapter 7

 

 

 

 

network?

 

 

An error code is returned.

 

- Is the data transmission format correct?

Section 4.1

 

 

 

 

Section 5.1

 

 

 

 

- Does the data written fall within the specified range?

Chapter 9

 

 

 

 

 

- Some parameters cannot be written during inverter operation.

Inverter

 

 

 

 

 

Changing should be attempted when the inverter is in halt.

instruction

 

 

 

 

 

manual

 

The trip err5 and alarm t

- Check the cable connection and the timer setting.

Section 7.3

occur.

 

 

 

 

 

 

Frequency instructions

from

the

- Is the frequency setting mode selection parameter set to “computer”?

Section 8.1

computer have no effect.

 

 

 

 

Commands, including the run and

- Is the command mode selection parameter set to “computer”?

Section 8.1

stop commands, from the com-

 

 

 

muter have no effect.

 

 

 

 

 

During RS485

communication,

- Is the inverter connected correctly?

Refer

to

an inverter sends back respons-

- Are you sure the receive line and the send line are not in contact with

Appendix

 

es repeatedly an infinite number

each other?

2.

 

of times.

 

 

 

 

 

 

A change to a parameter does

Some communication-related parameters do not take effect until the

Chapter 7

not take effect.

 

 

 

inverter is reset. To make them take effect, turn the inverter off tempo-

 

 

 

 

 

 

rarily, then turn it back on.

 

 

The setting of a parameter was

When using the TOSHIBA Inverter Protocol, use the W command to

Section 4.2

changed, but it returns to its

write data into the EEPROM. If you use the P command that writes data

 

 

original setting when the inverter

into the RAM only, the data will be cleared when the inverters are reset.

 

 

is turned off.

 

 

 

 

 

 

70

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Toshiba VF-AS1 Series, RS485 instruction manual Appendix 4 Troubleshooting
Page 70 Page 72

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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