Toshiba TOSVERT VF-AS1 Slave 100.00Hz 00%, 90.00Hz 45.00Hz, Slave 100.00Hz1 00%, 80.00Hz 40.00Hz

Page 39

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E6581315

•If the “Frequency point selection” function is disabled (=)

The operation frequency (frequency command value) of the inverters are calculated using the fol- lowing equations, with the received data in the following equation used as the data received from the master inverter when inverters are operated under the control of a master inverter (inter-drive communication), or with the received data in the following equation used as the data received from the computer when inverters are operated under the control of a computer (computer-linked opera- tion).

fc( Hz ) =

Slave recieve data(%)⋅ Slave side FH

 

 

(Hz)

 

 

 

 

 

 

 

 

 

 

10000

 

 

 

 

 

 

Example:

 

 

 

 

 

Unit:1=0.01Hz

 

 

 

 

 

Maximum frequency

Operation frequency command value

 

Master (Fc)

 

 

100.00Hz (10000)

 

 

50.00Hz (5000)

 

Slave 1

 

 

90.00Hz (9000)

 

 

45.00Hz (4500)

 

Slave 2

 

 

80.00Hz (8000)

 

 

40.00Hz (4000)

Master send data：fc(%) =

Master side fc ⋅ 10000

=

5000×10000

= 5000 = 50%

Master side FH

10000

 

 

 

 

 

 

 

 

Slave1 : fc( Hz ) =

5000 ⋅ 9000

= 4500 = 45Hz

 

 

 

10000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Slave 2 : fc( Hz ) =

 

5000 ⋅ 8000

= 4000 = 40Hz

 

 

 

10000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

•If the “Frequency point selection” function is enabled (≠)

When inverters are operated under the control of a mater inverter, the operation frequency (fre- quency command value) of the slave inverters are calculated using the following equations.

When inverters are operated under the control of a computer, read “command from the master inverter” in the following equations as “command from the computer.”

fc( Hz ) =

 

Po int 2 frequency − Po int1 frequency

⋅（Master command(%) − Po int1）＋Po int1 frequency

 

 

 

 

 

 

 

 

 

 

 

 

Po int 2 − Po int1

 

 

 

 

 

 

 

 

 

 

 

 

 

(Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Example:

Units: Frequency unit 1 = 0.01Hz, Point setting unit 1 = 0.01%

 

 

 

 

 

Maximum

Point 1

 

Point 1 fre-

 

Point 2 set-

 

Point 2

Frequency

 

 

 

 

 

 

frequency

setting

 

quency

 

ting

 

frequency

(Fc)

 

 

 

 

 

 

()

()

 

()

 

()

 

()

 

 

 

Master (Fc)

100.00Hz

－

 

－

 

－

 

－

50.00Hz

 

 

 

 

 

 

(10000)

 

 

 

 

 

 

 

 

 

 

 

 

 

(5000)

 

 

Slave 1

100.00Hz

0.00%

 

0.00Hz

 

100.00%

 

90.00Hz

45.00Hz

 

 

 

 

 

 

(10000)

 

(0)

 

(0)

 

 

 

(10000)

 

(9000)

(4500)

 

 

Slave 2

100.00Hz(1

0.00%

 

0.0Hz

 

100.00%(10

 

80.00Hz

40.00Hz

 

 

 

 

 

 

0000)

 

(0)

 

(0)

 

 

 

000)

 

(8000)

(4000)

 

Data sent by the master inverter

 

 

 

 

 

 

 

 

 

 

 

 

Master send data : fc(%) =

Master side fc ⋅10000

=

5000×10000

= 5000 = 50%

 

 

 

 

 

10000

 

 

 

 

 

 

 

 

 

 

Master side FH

 

 

 

 

 

Both slaves 1 and 2: Result of a conversion made on the slave side

 

 

 

 

fc( Hz ) =

Slave receive data(%) ⋅ Slave side FH

=

5000 ⋅10000

= 5000 = 50Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

10000

 

 

 

 

 

 

10000

 

 

 

 

 

Both slaves 1 and 2: Result of a conversion to % made prior to a conversion to point frequency

fc(%) =

fc( Hz ) ⋅10000

=

5000 ⋅10000

= 5000 = 50%

 

 

 

 

 

 

10000

 

 

 

 

 

 

 

 

 

Slave side FH

 

 

 

 

 

 

 

 

 

 

 

 

 

Results of conversions to point frequency (for the equation used, see above.)

Slave1 : fc( Hz ) =

 

9000 − 0

 

⋅ ( 5000 − 0 )＋0 = 4500 = 45Hz

10000 − 0

 

 

Slave 2 : fc( Hz ) =

 

8000 − 0

⋅ ( 5000 − 0 )＋0 = 4000 = 40Hz

10000 − 0

 

 

38

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Contents E6581315② Tosvert VF-AS1 Series RS485 Communication FunctionE6581315 Read first Safety precautionsContents General outlines of the communication function BIT15 BIT8BIT7 BIT0Bit Word BIT2 Data transmission specificationsCommunication protocol About the handling of received framesMOUBUS-RTU 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 Transmission errors Format error Data transmission format does not matchCommunication There is no communication number that matches 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$160 T=TIMER COUNT=TIMER-T If Count 0 then T=TIMERPrint #1,B$ Page End If MSComm1.Output = Text2.Text & Chr13 End SubText2.Text = Text1.Text = End Sub Inverter number  MODBUS-RTU protocolRead command MODBUS-RTU transmission formatCRC 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 SlaveSend waiting time ,  Free notesUse this function for the following case 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 FA52Monitoring from the computer RFD00CRUnit 0.01% N·m 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, FE42„ Inverter operating command mode status FD45, FE45 „ Inverter operating frequency mode status FD46, FE46Preset speed operation „ Alarm information monitor FC91 „ Cumulative operation time alarm monitor FE79Bit Specifications Remarks E6581315 Model Data „ Inverter model capacity code FB05LED setting by communication Parameter Name Range SettingUtilizing panel LEDs and keys by communication „ Block Communication Function for LED Display Blank Ascii LED display data code 00H-1FH are blankKey utilization by communication FA10=0FA10=1 Parameter data ROM EEPPage FE29 Input power Alarm codeFE02 Frequency command value 01Hz FE19 Torque commandTion FE80 Cumulative power on time E6581315 FD50 Light-load high-speed torque 01%FE84 Binary input value option 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
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