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262 Actual signals and parameters
Group 81: PFA control
Code
Description
Range
Resolution
Default
S
8103
REFERENCE STEP
1
0.0 … 100.0%
0.1%
0.0%
Sets a percentage value that is added to the process reference.
• Applies only when at least one auxiliary (constant speed) motor is running.
• Default value is 0%.
Example:
An ACS320 operates three parallel pumps that maintain water pressure in a
pipe.
• Parameter
sets a constant pressure reference that con-
trols 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 pres-
sure.
• When the first auxiliary pump operates, increase the reference with parameter 8103
REFERENCE STEP 1.
• When both auxiliary pumps operate, increase the reference with parameter 8103
REFERENCE STEP 1 + parameter
• When three auxiliary pumps operate, increase the reference with parameter 8103
REFERENCE STEP 1 + parameter
+ parameter
8104
REFERENCE STEP
2
0.0 … 100.0%
0.1%
0.0%
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
8105
REFERENCE STEP
3
0.0 … 100.0%
0.1%
0.0%
Sets a percentage value that is added to the process reference.
• Applies only when at least three auxiliary (constant speed) motors are running.
• See parameter
Содержание ACS320 series
Страница 1: ...ABB drives User s manual ACS320 drives 0 5 to 30 hp ...
Страница 4: ......
Страница 18: ...18 Safety ...
Страница 28: ...28 Operation principle and hardware description ...
Страница 56: ...56 Electrical installation ...
Страница 142: ...142 Program features Connection diagram example ACS320 xx xxxx x ...
Страница 282: ...282 Actual signals and parameters ...
Страница 358: ...358 Fieldbus control ...
Страница 376: ...376 Fault tracing ...
Страница 382: ...382 Maintenance and hardware diagnostics ...
Страница 407: ...Dimension drawings 407 Frame size R2 NEMA 1 Frame size R2 IP20 NEMA 1 3AUA0000051097 A ...
Страница 409: ...Dimension drawings 409 Frame size R3 NEMA 1 Frame size R3 IP20 NEMA 1 3AUA0000051118 A ...
Страница 411: ...Dimension drawings 411 Frame size R4 NEMA 1 Frame size R4 IP20 NEMA 1 3AUA0000051133 A ...
Страница 412: ...412 Dimension drawings ...
Страница 413: ...Index Numerics A B C D E F G H I K L M N O P R S T ...
Страница 442: ...www abb com drives www abb com drivespartners 3AUA0000062599 Rev E EN EFFECTIVE 2016 07 05 Contact us 3AUA0000062599E ...