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Actual signals and parameters 275
Example:
In the diagram below, the pumping station’s outlet flow is controlled by the
measured inlet flow (A).
8122
PFA START DELAY
0.00 … 10.00 s
0.01 s
0.50 s
Sets the start delay for speed regulated motors in the system. Using the delay, the
drive works as follows:
• Switches on the contactor of the speed regulated motor – connecting the motor to
the drive power output.
• Delays motor start for the time 8122 PFA START DELAY.
• Starts the speed regulated motor.
• Starts auxiliary motors. See parameter
for delay.
Warning! Motors equipped with star-delta starters require a PFA start delay.
• After the drive relay output switches a motor On, the star-delta starter must switch to
the star-connection and then back to the delta-connection before the drive applies
power.
• So, the PFA start delay must be longer than the time setting of the star-delta starter.
Group 81: PFA control
Code
Description
Range
Resolution
Default
S
M
3~
M
3~
M
3~
Outlet
Outlet
Outlet
P1
P2
P3
Sewage
tank
Contactors
P1
P2
P3
Mains 3~
3
3
3
3
ACS320
3
3
Inlet pipe
A
pipe1
pipe2
pipe3
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 ...
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