Feedback From The Drive – Efb; Pre-Defined Feedback; Actual Value Scaling - ABB ACS550-01 User Manual

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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 160.
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 "Complete
Parameter List for ACS550" section for parameter resolutions.) For example:
Feedback
Integer
1
10
Where parameters are in percent, the "Complete Parameter Descriptions" section
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%.
Embedded Fieldbus
Drive Parameter
SPEED
FREQ OUTPUT
CURRENT
TORQUE
POWER
DC BUS VOLT
OUTPUT VOLTAGE
FB STATUS WORD – bit 0 (STOP)
FB STATUS WORD – bit 2 (REV)
DI1-3 STATUS – bit 1 (DI3)
Parameter
Resolution
0.1 mA 1 * 0.1 mA = 0.1 mA
0.1% 10 * 0.1% = 1%
Modbus Protocol Reference
ABB DRV
40102
40103
40104
40105
40106
40107
40109
40301 bit 0
40301 bit 2
40118
(Feedback Integer) * (Parameter Resolution) = Scaled Value
ACS550 User's Manual
DCU PROFILE