ABB ACS880+N5350 User Manual page 84


Highlight the motor value to be edited using
keys. Use
Use and
and to move the curser left and right.
Press (save) to enter the value.
Important! Motor Back EMF voltage (located on
the motor nameplate) is critical to the successful
operation of the cooling tower motor. Please record
this data here for future reference.
Back EMF Voltage:
Motor Serial Number:
Note: Back EMF Voltage is referrred to as
Measured Open Circuit Voltage on the motor
nameplate.
Autophasing

The drive is now ready to run the motor identification
routine (ID run). During the ID run, the motor is
injected with DC current. Autophase stops the rotor
prior to the ID run.
Note: Autophase time has a default of 15 seconds.
It is best to observe the time it takes the fan to stop
moving and use this as an accurate autophase time.
Use the
Use to select the value to edit.
3AXD50000011888
Table 12-1 Initial Start-up / Motor Data and ID Run
to edit the values.
to change the value of a digit. Use
keys to move between selections.
Local
Motor data
Check the values from the motor's
nameplate, and enter them here.
Motor Type
Back EMF voltage
Motor nominal current
Motor nominal speed
Back
Local
99.07 Motor Back EMF voltage
80.0
Cancel
Motor ID Run
Local
Autophasing
Select parameters for autophasing.
Autophasing Current
Autophasing Time
Back
CTDD 50.0 rpm
PMSM .
360.0 V
1.3 A
500 rpm
00:00 Next
CTDD 0.0 rpm
000.0
v
960.0
00:00 Save
CTDD 50.0 rpm
50%
15 S
00:00 Next
Startup Assistant & Parameters 12-5