52 ACS 300 User’s Manual
Chapter 7 - Drive Parameters
OUTPUT V
The voltage applied to the motor. This parameter is display
only.
CON f1
CON f2
CON f3
Constant frequency (preset speed) 1, 2 and/or 3. Constant
frequencies override the analog input reference. Constant
frequencies are activated with Digital Inputs 3 and 4 or Digi-
tal Inputs 4 and 5 depending on the control mode selected.
For constant frequency selection, refer to I/O mode descrip-
tions
on pages 26 to 31.
Note! Min and Max Freq parameters are ignored when con-
stant speed is used.
I LIMIT
This setting is the maximum output current the ACS 300 will
supply to the motor.
START(FUNCTION)
ACC RAMP
Ramp acceleration as set on Page 1 / Page 4 parameter
ACC 1 (or ACC 2 as selected by digital inputs in Standard
and Alternate I/O mode, refer to page 26
and page 30)
.
FLYING
Use this setting to start the motor if it is already rotating, as
in a fan drive. The drive will start smoothly at the current fre-
quency instead of starting at 0 Hz. By selecting FLYING, the
drive will be able to ride through short interruptions of the AC
line supply.
Note! Flying start searches for the running speed by apply-
ing a small torque to the load at the maximum frequency and
decreasing the output frequency until the load speed is
found. If the motor is not coupled to a load or the load has
low inertia, the motor will start at a speed higher than the set
reference.
Note! If the motor and load are rotating in a direction oppo-
site to the commanded rotation, the ACS 300 will start the
motor from
0 Hz and accelerate according to the selected acceleration
ramp.
To Next Page
Loading...
