ABB ACS310, User Manual

Page: 265 / 376

Actual signals and parameters 265
6428 AL2RANGE40
TO50
Amplitude logger 2 (selection with parameter 6404 )
40…50% distribution
-
0.0…100.0% 1 = 0.1%
6429 AL2RANGE50
TO60
Amplitude logger 2 (selection with parameter 6404 )
50…60% distribution
-
0.0…100.0% 1 = 0.1%
6430 AL2RANGE60
TO70
Amplitude logger 2 (selection with parameter 6404 )
60…70% distribution
-
0.0…100.0% 1 = 0.1%
6431 AL2RANGE70
TO80
Amplitude logger 2 (selection with parameter 6404 )
70…80% distribution
-
0.0…100.0% 1 = 0.1%
6432 AL2RANGE80
TO90
Amplitude logger 2 (selection with parameter 6404 )
80…90% distribution
-
0.0…100.0% 1 = 0.1%
6433 AL2RANGE90
TO
Amplitude logger 2 (selection with parameter 6404 ) over
90% distribution
-
0.0…100.0% 1 = 0.1%
81 PFC CONTROL Set-up of Pump-Fan Control (PFC) mode. See section PFC
and SPFC control on page 155 .
8103 REFERENCE
STEP 1
Sets a percentage value that is added to the process
reference. Applies only when at least one auxiliary (constant
speed) motor is running.
Example: The drive operates three parallel pumps that
maintain water pressure in a pipe.
Parameter
4011 INTERNAL SETPNT sets a constant
pressure reference that controls the pressure in the pipe.
The speed regulated pump operates alone at low water
consumption levels.
As water consumption increases, first one constant speed
pump operates, then, the second.
As flow increases, the pressure at the output end of the pipe
drops relative to the pressure measured at the input end. As
auxiliary motors step in to increase the flow, the adjustments
below correct the reference to more closely match the
output pressure.
When the first auxiliary pump operates, increase the
reference with parameter 8103 REFERENCE STEP 1 .
When two auxiliary pumps operate, increase the reference
with parameter 8103 REFERENCE STEP 1 + parameter
8104 REFERENCE STEP 2 .
When three auxiliary pumps operate, increase the reference
with parameter 8103 REFERENCE STEP 1 + parameter
8104 REFERENCE STEP 2 + parameter 8105
REFERENCE STEP 3 .
0.0%
0.0…100.0% Value in percent 1 = 0.1%
8104 REFERENCE
STEP 2
Sets a percentage value that is added to the process
reference. Applies only when at least two auxiliary (constant
speed) motors are running.
See parameter
8103 REFERENCE STEP 1 .
0.0%
All parameters
No.
Name/Value Description Def/FbEq
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