Toshiba TOSVERT VF-AS1 Commands and monitoring from the computer, Pi Off, BIT15 BIT0

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8. Commands and monitoring from the computer

Across the network, instructions (commands and frequency) can be sent to each inverter and the operating status of each inverter can be monitored.

8.1. Communication commands (commands from the computer)

„Communication command (Communication number: FA00, FA04)

Commands can be executed on inverter frequencies and operation stop through communication. The VF-AS1 series can enable command and frequency settings through communication irrespec- tive of settings of the command mode selection () and frequency setting mode selection 1 (). However, if “48 (49): Forced switching from communication to local,” “56 (57): Forced continuous operation,” or “58 (59): Specified speed operationj” is set by input terminal function se- lection ( to ), a change to a command other than communication and to a frequency command is feasible through a contact on the terminal board.

Once the communication command (FA00, FA04) is set to enable communication command priority and frequency priority, both priorities will be enabled unless OFF is set, power is turned off or is re- set, or factory default setting () is selected. Emergency stop is always enabled even though communication command priority is not set.

Table 1 Data construction of communication commands (communication number: FA00, FA04)

bit

Specifications

0

1

Remarks

0

Preset

speed

operation

Preset

speed

operation

is

disabled

or

preset

frequencies 1

speed

operation

frequencies

(1-15) are set

by

1

Preset

speed

operation

specifying bits for preset speed operation frequen-

frequencies 2

cies 1-4.

2

Preset

speed

operation

(0000: Preset speed operation OFF,

frequencies 3

001-1111: Setting of preset speed operation

3

Preset

speed

operation

frequencies (1-15))

frequencies 4

4

Motor selection (1 or 2)

Motor 1

Motor2

THR1 : 

(THR 2 selection)

(THR 1)

(THR2)

THR2 : 

5

PI control

Normal operation

PI OFF

6

Acceleration/deceleration

Accelera-

Accelera-

AD1 : , 

pattern selection (1 or 2)

tion/deceleration pattern

tion/deceleration pattern

AD2 : , 

(AD2 selection)

1 (AD1)

2 (AD2)

7

DC braking

OFF

Forced DC braking

8

Jog run

OFF

Jog run

9

Forward/reverse

run se-

Forward run

Reverse run

lection

10

Run/stop

Stop

Run

11

Coast stop command

Standby

Coast stop

12

Emergency stop

OFF

Emergency stop

Always enabled, “E” trip

13

Fault reset

OFF

Reset

No data is returned from the inverter.

14

Frequency

priority

selec-

OFF

Enabled

Enabled regardless of the set-

tion

ting of 

15

Command

priority

selec-

OFF

Enabled

Enabled regardless of the set-

tion

ting of 

Note: The acceleration/deceleration change command OR with Bit 8 and 9 of Communication num-

ber FA20 and FA22.

Ex.: Forward run command used in two-wire RS485 communication (PFA008400) CR

1 is specified for bit 15 (communication command: enabled) and bit 10 (operation command).

FA00:

BIT15

BIT0

1

0

0

0

0

1

0

0

0

0

0

0

0

0

0

0

8

4

0

0

Ex.: Reverse run command used in two-wire RS485 communication (PFA008600) CR, (PFA00C600) CR 8600H : To disable frequency instructions from the computer

C600H : To enable also frequency instructions from the computer

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