Feedback From The Drive – Efb; Pre-Defined Feedback; Actual Value Scaling - ABB ACS550 User Manual

ACS550 User's Manual
Feedback from the drive – EFB

Pre-defined feedback

Inputs to the controller (drive outputs) have pre-defined meanings established by the
protocol. This feedback does not require drive configuration. The following table lists
a sample of feedback data. For a complete listing, see input word/point/object
listings in the technical data for the appropriate protocol starting on page 201.
0102
0103
0104
0105
0106
0107
0109
0301
0301
0118
Note: With Modbus, any parameter can be accessed using the format: "4" followed
by the parameter number.

Actual value scaling

The scaling of actual values can be protocol dependent. In general, for Actual
Values, scale the feedback integer using the parameter's resolution. (See section
Complete parameter list
Feedback
integer
1
10
Where parameters are in percent, the
specifies what parameter corresponds to 100%. In such cases, to convert from
percent to engineering units, multiply by the value of the parameter that defines
100% and divide by 100%.
Drive parameter
SPEED
OUTPUT FREQ
CURRENT
TORQUE
POWER
DC BUS VOLTAGE
OUTPUT VOLTAGE
1 – bit 0 (STOP)
FB CMD WORD
1 1 – bit 2 (REV)
FB CMD WORD
1-3 – bit 0 (DI3)
DI STATUS
on page
Parameter
resolution
0.1 mA 1 · 0.1 mA = 0.1 mA
0.1% 10 · 0.1% = 1%
Modbus protocol reference
ABB DRV DCU PROFILE
40102
40103
40104
40105
40106
40107
40109
40301 bit 0
40301 bit 2
40118
85 for parameter resolutions.) For example:
(Feedback integer) · (Parameter resolution) = Scaled value
Complete parameter descriptions
197
section
Embedded fieldbus