324 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.
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