References; Debugging The Network Words; Scaling Of References - ABB ACS880 Firmware Manual

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References

References are 16-bit words containing a sign bit and a 15-bit integer. A negative
reference (indicating reversed direction of rotation) is formed by calculating the
two's complement from the corresponding positive reference.
ABB drives can receive control information from multiple sources including analog
and digital inputs, the drive control panel and a fieldbus adapter module. In order
to have the drive controlled through the fieldbus, the module must be defined as
the source for control information such as reference. This is done using the source
selection parameters in groups
chain and 28 Frequency reference

Debugging the network words

If parameter 50.12 FBA A debug mode
the fieldbus are displayed by

Scaling of references

Note: The scalings described below are for the ABB Drives communication profile.
Fieldbus-specific communication profiles may use different scalings. For more
information, see the manual of the fieldbus adapter
The references are scaled as defined by parameters 46.01...46.07; which scaling is
in use depends on the setting of
Fieldbus
Fieldbus control through a fieldbus adapter 733
22 Speed reference
chain.
is set to Fast, the references received from
50.14 FBA A reference 1
50.4 FBA A ref1 type
46.01 (with speed reference)
20000
46.02 (with frequency reference)
46.03 (with torque reference)
10000
46.04 (with power reference)
0 (with torque or power reference)
0 ±
(46.06) (with speed reference)
±
(46.07) (with frequency reference)
-(46.03) (with torque reference)
-10000
-(46.04) (with power reference)
-(46.01) (with speed reference)
-20000
-(46.02) (with frequency reference)
selection, 26 Torque reference
and 50.15 FBA A reference
and 50.5 FBA A ref2
Drive
2.
type.