Kruger Ecowatt Drive K120 Series, Operation Manual

Page: 153 / 173

Ecowatt ® Drive K120 series Communication protocol
-146-
Function
code
Name Description Default Modify
P00.11 ACC time 1
Setting range of P00.11 and
P00.12: 0.0–3600.0s
Model
depended
○
P00.12 DEC time 1
Model
depended
○
The address of P00.11 is 000B, 10s is 0064H in the hexadecimal form, and 20s is 00C8H
in the hexadecimal form.
The command transmitted by the master is as follows:
Continuous
writing
command
VFD
address
Parameter
address
CRC check
Number
of bytes 10s 20s Data
number
If the operation is successful, the following response is returned:
Continuous
writing
command
VFD
address
Parameter
address
CRC check
Data
number
Note: In the preceding command description, spaces are added to a command just for
explanatory purposes. In practical applications, no space is required in the commands
unless the upper computer can remove the space by themselves.
7.6 Common communication faults
Common communication faults include the following:

No response is returned.

The VFD returns an exception response.
Possible causes of no response include the following:

The serial port is set incorrectly. For example, the converter uses the serial port
COM1, but COM2 is selected for the communication.

The settings of the baud rates, data bits, stop bits, and check bits are inconsistent
with those set on the VFD.

The positive pole (+) and negative pole (-) of the RS485 bus are connected reversely.

The resistor connected to RS485 terminals on the terminal block of the VFD is set
incorrectly.