ABB ACS355 - Configuring Parameters to be Read from the Drive; Configuration Example

Customization 21
Configuring parameters to be read from the drive
The ACS3XX_COM_MOD_RTU function block can read up to 8 parameters from the
ACS3xx drive.
The ACS3xx drive parameters 53.10…53.17 determine which parameters are read from
the drive. Give the values in the format XXYY, where XX is the parameter group and YY is
the parameter index of the parameter to be read. For example, the value 104 corresponds
to parameter 01.04 CURRENT.
Set parameter 53.10 to either 101 (calculated motor speed) or 103 (calculated drive output
frequency). You can freely choose which parameters to map to parameters 53.11…53.17.
For instructions on how to set parameter values, see ACS355 user’s manual
(3AUA0000066143 [English]).
If more than three parameters are configured to be read, change the value of
NVAR_READ in the ACS3XX_COM_MOD_RTU function block as instructed below.
1. In CoDeSys, go offline by clicking Online > Logout.
2. In the ACS3XX_COM_MOD_RTU function
block, change the value of NVAR_READ to
correspond to the number of parameters
read + 1 (the number includes the status
word).
3. Go back online by clicking Online > Login.
An Online Change dialog opens.
4. Click Yes.
The visualization is updated to reflect the changes made.
5. To keep the changes for the next reboot, click Online > Create boot project.
 Configuration example
In this example, six parameters are configured to be read from an ACS355 drive by the
function block. The following values are given to parameters 53.10…53.16:
Parameter set
in the drive
Value Parameter read from
the drive
Function
53.10 101 01.01 SPEED & DIR Calculated motor speed in rpm. A negative value
indicates reverse direction.
53.11 104 01.04 CURRENT Measured motor current (1 = 0.1 A).
53.12 305 03.05 FAULT WORD 1 A 16-bit data word that indicates faults in the drive.
53.13 110 01.10 DRIVE TEMP Measured IGBT temperature in (1 = 0.1 °C).
53.14 114 01.14 RUN TIME (R) Elapsed drive running time in hours.
53.15 105 01.05 TORQUE Ratio of calculated motor torque to the motor nomi-
nal torque (1 = 0.1% of the nominal torque).