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References
The ABB drives profile supports the use of two references, EFB reference 1 and
EFB reference 2. The references are 16-bit words each containing a sign bit and a
15-bit integer. A negative reference is formed by calculating the two’s complement
from the corresponding positive reference.
The references are scaled as defined by parameters 46.01...46.07; which scaling is
in use depends on the setting of 58.26 EFB ref1 type and 58.27 EFB ref2
type (page 400).
Fieldbus
Drive
20000
10000
0
-10000
-20000
46.01 (with speed reference)
46.02 (with frequency reference)
46.03 (with torque reference)
46.04 (with power reference)
0 (with torque or power reference)
(46.06) (with speed reference)
(46.07) (with frequency reference)
-(46.03) (with torque reference)
-(46.04) (with power reference)
-(46.01) (with speed reference)
-(46.02) (with frequency reference)
The scaled references are shown by parameters 3.9 EFB reference 1 and 3.10 EFB
reference 2.
618 Fieldbus control through the embedded fieldbus interface (EFB)
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