Rockwell Automation 1333 Drive, 3/4-5HP, 230-575V Series D - Manual (Page 53)

Operation and Programming
Chapter 5
5-10
VoltsĆperĆHertz Curve Settings
Important: The maximum allowable drive output frequency will be
determined by the lowest programmed value of any of the following
parameters:
•
Parameter 3 Frequency Range
•
Parameter 15 Maximum Frequency
•
Parameter 51 Upper Frequency Clamp
•
Parameter 53 Bias Frequency –– If Parameter 53 is Higher Than
Parameter 54
•
Parameter 54 Gain Frequency –– If Parameter 54 is Higher Than
Parameter 53
Parameter 03 -- Frequency Range
Units = Code
Range = 50, 60 or FF
Factory Setting = 60
This parameter permits the selection of three linear volts-per-Hertz ramps.
The maximum frequency settings of these ramps are 50 Hz, 60 Hz, or FF.
If the BCD Interface option is installed, Parameter 3 must be set to match
the scaling jumper on the BCD Interface Board –– Either 60 for 60 Hz
operation, or FF for 120/200 Hz operation.
If set to 50, 50 Hz will be the maximum drive frequency –– The absolute
maximum output speed that the drive can reach. If set to 60, 60 Hz will be
the maximum drive frequency –– The absolute maximum output speed
that the drive can reach. Parameter 15 will have no effect on maximum
output speed, but Parameter 51 will. When Parameter 3 is set to 50 or 60,
the drive will use the lower of the values set by Parameter 3 and 51.
Parameter 16 will have no effect on base speed.
If set to FF, the value set by Parameter 15 or 51 will be the maximum drive
frequency –– The absolute maximum output speed that the drive can
reach. When Parameter 3 is set to FF, the drive will use the lower of the
values set by Parameters 15 and 51. The value set by Parameter 16 Base
Frequency will be the point where maximum output voltage is applied to
the motor.
Important: Applications where volts-per-Hertz curves are required to
reach maximum voltage other than at 50 or 60 Hz are primarily provisions
for operating custom motors. For application assistance in these special
ranges, contact your nearest Allen-Bradley representative.