B–11

SJ300 Inverter

Command – 05 The 05 command reads the inverter’s trip history. The frame format of command 05 follows the diagrams and specification tables. The transmit frame has no data field.

Transmit frame format

STX Node Command BCC [CR]

Element

Description

Size

Value

 

 

 

 

 

 

 

 

 

 

 

STX

Control code (STart of TeXt)

1 byte

STX (0x02)

 

 

 

 

 

 

Node

Node (station) address of inverter

2 bytes

01 to 32

 

 

 

 

 

 

Command

Transmission command

2 bytes

05

BAppendix

 

 

 

 

[CR]

Control code (carriage return)

1 byte

[CR] (0x0D)

BCC

Block check sum code

2 bytes

Exclusive OR of Node,

 

 

 

 

Command, and Data

 

 

 

 

 

 

The receive frame has a 440-byte data field. This consists of an 8-byte total accumulated number of trip events, followed by six 72-byte strings for the six most recent trip events as shown below.

Receive frame format

STX

Node

Data

BCC

[CR]

 

 

 

 

 

Data field contents

Total count

Trip 1

Trip 2

Trip 3

Trip 4

Trip 5

Trip 6

 

 

 

 

 

 

 

Element

Description

Size

Value

 

 

 

 

 

 

 

 

STX

Control code (STart of TeXt)

1 byte

STX (0x02)

 

 

 

 

Node

Node (station) address of inverter

2 bytes

01 to 32

 

 

 

 

Data

Transmission data

440

(see next table)

 

 

bytes

 

 

 

 

 

BCC

Block check sum code

2 bytes

Exclusive OR of Node,

 

 

 

Command, and Data

 

 

 

 

[CR]

Control code (carriage return)

1 byte

[CR] (0x0D)

 

 

 

 

The nine bytes of data for each trip event history is listed below. The data contains the multiplier to adjust the decimal point. Divide the data by that factor to derive the actual value.

 

No.

Monitor Item

Units

Multiplier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

Trip factor

—

—

 

 

 

 

 

 

 

 

2

Inverter Status A

—

—

 

 

 

 

 

 

 

 

3

Inverter Status B

—

—

 

 

 

 

 

 

 

 

4

Inverter Status C

—

—

 

 

 

 

 

 

 

 

5

Output frequency

Hz

10

 

 

 

 

 

 

 

 

6

Accumulated Run Mode time

hours

1

 

 

 

 

 

 

 

 

7

Output current

A

10

 

 

 

 

 

 

 

 

8

Output voltage

V

10

 

 

 

 

 

 

 

 

9

Power ON time

hours

1