INVT GD200A-004G-4, Руководство по эксплуатации

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GD200A series VFD Communication protocol
-142-
Code high 8
bit
Meaning Code low 8 bit Meaning
01 GD
0x08 GD35 vector VFDs
0x09 GD35-H1 vector VFDs
0x0a GD300 vector VFDs
0x0b GD100 simple vector VFDs
0x0c GD200A general VFDs
0x0d GD10 mini VFDs
Note: The code is consisted of 16 bits including high 8 bits and low 8 bits. High 8 bits mean the
motor type series and low 8 bits mean the derived motor types of the series. For example, 0110H
means Goodrive200A vector VFDs.
9.5.3 Fieldbus ratio values
The communication data is expressed by hex in actual application and there is no radix point in hex.
For example, 50.12Hz cannot be expressed by hex so 50.12 can be magnified by 100 times into
5012, so hex 1394H can be used to express 50.12.
A non-integer can be timed by a multiple to get an integer and the integer can be called fieldbus ratio
values.
The fieldbus ratio values are referred to the radix point of the setting range or default value in the
function parameter list. If there are figures behind the radix point (n=1), then the fieldbus ratio value
m is
10
n
. Take the table as the example:
Function
code
Name Details
Default
value
Modify
P01.20
Wake-up from sleep
delay time
0.0
–3600.0s (valid when P01.19=2)
0.0s
○
P01.21 Restart after power off
0: Disable
1: Enable
0
○
If there is one figure behind the radix point in the setting range or the default value, then the fieldbus
ratio value is 10. If the data received by the upper monitor is 50, then the "hibernation restore delay
time" is 5.0 (5.0=50÷10).
If MODBUS communication is used to control the hibernation restore delay time as 5.0s. Firstly, 5.0
can be magnified by 10 times to integer 50 (32H) and then this data can be sent.
VFD
address
Write
command
Parameters
address
Data
number
CRC
check
After the VFD receives the command, it will change 50 into 5 according to the fieldbus ratio value
and then set the hibernation restore delay time as 5s.
Another example, after the upper monitor sends the command of reading the parameter of