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276 Actual signals and parameters
8123
PFA ENABLE
0…3
-
0
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
• 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.
1 = ACTIVE – PFA control enabled.
2 = SPFC ACTIVE – SPFC control enabled. The soft pump and fan control is used for
alternation applications where lower pressure peaks are desirable when a new
auxiliary motor is started.
3 = SPFC+AUTOCHG – SPFC control with autochange is enabled. Autochange with
soft pump and fan control (SPFC) is active only when auxiliary motors are not
running. The speed regulated motor is alternated according to the autochange
logic.
Group 81: PFA control
Code
Description
Range
Resolution
Default
S
Summary of Contents for ACS320 series
Page 1: ...ABB drives User s manual ACS320 drives 0 5 to 30 hp ...
Page 4: ......
Page 18: ...18 Safety ...
Page 28: ...28 Operation principle and hardware description ...
Page 56: ...56 Electrical installation ...
Page 142: ...142 Program features Connection diagram example ACS320 xx xxxx x ...
Page 282: ...282 Actual signals and parameters ...
Page 358: ...358 Fieldbus control ...
Page 376: ...376 Fault tracing ...
Page 382: ...382 Maintenance and hardware diagnostics ...
Page 407: ...Dimension drawings 407 Frame size R2 NEMA 1 Frame size R2 IP20 NEMA 1 3AUA0000051097 A ...
Page 409: ...Dimension drawings 409 Frame size R3 NEMA 1 Frame size R3 IP20 NEMA 1 3AUA0000051118 A ...
Page 411: ...Dimension drawings 411 Frame size R4 NEMA 1 Frame size R4 IP20 NEMA 1 3AUA0000051133 A ...
Page 412: ...412 Dimension drawings ...
Page 413: ...Index Numerics A B C D E F G H I K L M N O P R S T ...