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Actual values
The ABB Drives profile supports the use of two fieldbus actual values, ACT1 and
ACT2. The actual values are 16-bit words each containing a sign bit and a 15-bit
integer. A negative value is formed by calculating the two’s complement from the
corresponding positive value.
The actual values are scaled as defined by parameters 46.01...46.04; which scaling
is in use depends on the setting of parameters 58.28 EFB act1 type and 58.29 EFB
act2 type (page 401).
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)
-(46.03) (with torque reference)
-(46.04) (with power reference)
-(46.01) (with speed reference)
-(46.02) (with frequency reference)
0
Fieldbus control through the embedded fieldbus interface (EFB) 619
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