Rockwell Automation 1336VT AC DRIVE 5-300AMP (2-160KW) PROGRAMMING MANUAL - Manual (Page 29)

Local and Serial Port Parameters
Firmware Version 1.01-3.01
Chapter 3
3-15
Parameter 19 Ċ Maximum
Frequency
Freq P R
P R Enter Hertz
40
250
60
Read and Write
Units
Minimum Value
Maximum Value
Factory Setting
This parameter sets the highest frequency that the drive will produce when
given a maximum speed command. The drive reaches this speed when a
local or remote potentiometer or a digital speed command is at its
maximum level unless Parameter 84 is set to 1. That is:
•
A +10V DC input at its maximum level.
•
A 20mA input at its maximum level.
•
A digital speed command at its maximum level.
–– or if Parameter 84 (Analog Inverse) is enabled ––
•
A 0V DC input at its maximum level.
•
A 4mA input at its maximum level.
Parameter 17 in conjunction with Parameter 18 and the addition of DC
Boost Select set by Parameters 9, 48, 49, 50 and 83, determines the drive
output volts-per-hertz slope up to Base Frequency. The value for Base
Frequency must be greater than the Minimum Frequency set by Parameter
16 and Break Frequency set by Parameter 49 as shown on page 2-37.
If Parameter 19 is set to a value less than Parameter 17 (Base Frequency),
drive output frequency will be limited to the value of Parameter 19 as
shown on page 2-37.
!
ATTENTION: The drive must be stopped before changing
Parameter 19. Decreasing Parameter 19 while the drive is running
will produce a sudden change in drive output frequency. Sudden
changes in drive output frequency may cause motor torque
pulsations that can damage connected equipment.