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

Page 71

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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Contents E6581315② Tosvert VF-AS1 Series RS485 Communication FunctionE6581315 Read first Safety precautionsContents Bit Word General outlines of the communication functionBIT15 BIT8BIT7 BIT0 BIT2 Data transmission specificationsMOUBUS-RTU Communication protocolAbout the handling of received frames Toshiba Inverter Protocol Binary mode 2FHData Data transmission format used in Ascii modeData transmission format INV-NO CMD28H Bytes Checksum area 5bytes BlankData SUM INV-NOData transmission format used in binary mode Sum 1 bytes Checksum not omissible 00H to FFH Command receivedReturned for the 57H W and 50H P commands Byte Bytes2FH Byte 4EH6EH Bytes NornTransmission format of Block Communication Page Bytes Blank Start Code INV-NO Block communication Computer Inverter CommandsDummy data is required for this command Reads the data with the specified communication numberRFE03077BCR RFE03CRPage Communication There is no communication number that matches Transmission errorsFormat error Data transmission format does not match Broadcast communication function VF-AS1 RFC90CR Examples of the use of communication commandsAscii mode Computer → Inverter Inverter → Computer From the computer H = 24d  trip statusExamples of Communication programs Goto =LENS$ For I=1 to LNext Input #1,B$Print #1,B$ 160 T=TIMER COUNT=TIMER-TIf Count 0 then T=TIMER Page Text2.Text = Text1.Text = End Sub End IfMSComm1.Output = Text2.Text & Chr13 End Sub Inverter number  MODBUS-RTU protocolCRC Read commandMODBUS-RTU transmission format Text size is 8 bytes fixed Inverter Write commandBlank Command 1 byte 5bytes Blank Command 1 byteEnd Return CRC Error codesCRC Generation Bit counter =Inter-drive communication Never use pin-7 P11 QWiring 4-wire RS485 communication） E6581315 QWiring 2-wire RS485 communicationPage Parameters relating to the slave side example =0.01% Proportional control of speed80.00Hz 40.00Hz Slave 100.00Hz 00%90.00Hz 45.00Hz Slave 100.00Hz1 00%INV-NO 1 byte Inverter number Transmission format for inter-drive communication0OFF Communication parametersMODBUS-RTU Inverter number Baud rate,  , Parity INV INV → PC PC → INV „ Timer Time-out period Computer linkPC → INV Master INV To SlaveUse this function for the following case Send waiting time , Free notes OFF Commands and monitoring from the computerCommunication commands commands from the computer PI OFFBraking answer BA Electric Power quantityForcibly braked Preliminary excitation Brake release BWire RS485 communication FA32 Output terminal no Specified data output „ Terminal board output data FA50„ FM analog output FA51 „ AM analog output FA52Unit 0.01% N·m Monitoring from the computerRFD00CR BIT15 „ Input terminal board status FD06, FE06RES Input terminal function selection 9 f119„ Output terminal board status FD07, FE07 ST=ON ST=OFF „ Inverter operating status 1 FD01, FE01„ Inverter operating status 3 FD49, FE49 „ Inverter operating status 2 FD42, FE42Preset speed operation „ Inverter operating command mode status FD45, FE45„ Inverter operating frequency mode status FD46, FE46 Bit Specifications Remarks „ Alarm information monitor FC91„ Cumulative operation time alarm monitor FE79 E6581315 Model Data „ Inverter model capacity code FB05Utilizing panel LEDs and keys by communication LED setting by communicationParameter Name Range Setting „ Block Communication Function for LED Display Blank Ascii LED display data code 00H-1FH are blankFA10=1 Key utilization by communicationFA10=0 Parameter data ROM EEPPage FE29 Input power Alarm codeFE02 Frequency command value 01Hz FE19 Torque commandFE84 Binary input value option Tion FE80 Cumulative power on timeE6581315 FD50 Light-load high-speed torque 01% ESC Appendix 1 Table of data codesCan SUBResponse time „ Data transmission time Appendix 2 Response timeVF-A7 Appendix 3 Compatibility with the communication functionAppendix 4 Troubleshooting Appendix 5 Connecting for RS485 communication TXB RXARXB TXA

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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