ABB RCNA-01 Bedienungsanleitung Seite 322

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318 Parameter listing and descriptions
ACH550-01 User's Manual
8122 PFA START DELAY 0…10 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 ACH550 power output.
Delays motor start for the time 8122 PFA
START DELAY.
Starts the speed regulated motor.
Starts auxiliary motors. See parameter 8115 for delay.
WARNING! Motors equipped with star-delta starters require a PFA
Start Delay.
After the ACH550 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.
Thus, the PFA Start Delay must be longer than the time setting of the
star-delta starter.
Code Description Range
M
3~
M
3~
M
3~
Outlet pipe 3
Outlet pipe 2
Outlet pipe 1
P1
P2
P3
Sewage
tank
Contactors
P1
P2
P3
Mains 3~
3
3
3
3
ACH550
3
3
Inlet pipe
A
Cooling water
tank
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