Table of Contents
Advertisement
24 Start-up
Check the synchronizing unit operation
￭
Action
Disable the trim function (set parameter 40.51 Set 1 trim mode to Off).
Use the LOC/REM key to select local control mode.
Select these actual values to the panel display:
•01.02 Motor speed estimated
•01.06 Output frequency
•ACS580 drives: 12.21 AI2 actual value. *)
•ACS880 drives: 12.11 AI1 actual value. *)
*) This is the 0 ... 10 V DC status signal from the synchronizing unit.
50 Hz systems: Start the drive and increase the speed reference until the output frequency is as close
to 50 Hz as possible. Record the actual speed and speed reference at this output frequency.
60 Hz systems: Start the drive and increase the speed reference until the output frequency is as close
to 60 Hz as possible. Record the actual speed and speed reference at this output frequency.
50 Hz systems: Decrease the speed reference until the output frequency is 45 ... 47 Hz. Make sure
that the status signal is 8 ... 10 V DC.
60 Hz systems: Decrease the speed reference until the output frequency is 55 ... 57 Hz. Make sure
that the status signal is 8 ... 10 V DC.
50 Hz systems: Increase the speed reference until the output frequency is 52 ... 55 Hz. Make sure that
the status signal is 0 ... 2 V DC.
60 Hz systems: Increase the speed reference until the output frequency is 62 ... 65 Hz. Make sure that
the status signal is 0 ... 2 V DC.
Stop the drive.
Check the trim function and synchronization
￭
This check makes sure that the trim function affects the speed control of the drive in the
correct way. Finding the correct value for trim range adjustment (parameter 40.55 Set 1 trim
adjust) is necessary for stable control and fast synchronization. The system then reaches
synchronization with decreasing oscillations around 50 Hz or 60 Hz and the status signal
for the trim function settles at approximately 5 V DC.
Action
Make sure that you have the recorded values of the actual speed and speed reference available.
Make sure that the trim function is disabled (parameter 40.51 Set 1 trim mode is set to Off).
Use the LOC/REM key to select remote control. The drive is now ready to be controlled externally with
the control panel.
Start the drive.
50 Hz systems: Set the speed reference to the value that was equivalent to 50 Hz output frequency.
60 Hz systems: Set the speed reference to the value that was equivalent to 60 Hz output frequency.
50 Hz systems: Check the output frequency from the display. If it is not 50 Hz, adjust the reference in
small steps until the output frequency from the display is 50 Hz. Record this value.
60 Hz systems: Check the output frequency from the display. If it is not 60 Hz, adjust the reference in
small steps until the output frequency from the display is 60 Hz. Record this value.
Stop the drive.
Advertisement
Table of Contents
