Parameter 20 ċ maximum volts, Parameter 21 ċ local run – Rockwell Automation 1336VT AC DRIVE 5-300AMP (2-160KW) PROGRAMMING MANUAL User Manual
Page 30
Local and Serial Port Parameters
Firmware Version 1.01-3.01
Chapter 3
3-16
Parameter 20 Ċ Maximum Volts
Freq
P
R
P
R
Enter
Volts
115
575
460
Read and Write
Units
Minimum Value
Maximum Value
Factory Setting
This parameter sets the maximum RMS output voltage of the drive. It may
also be used to set the volts-per-hertz curve when the drive is operating
between Base Frequency and Maximum Frequency. Beginning at Base
Frequency (Parameter 17), drive output voltage will be directly
proportional to drive output frequency along a line that starts at Base
Voltage (set by Parameter 18), and extends to Maximum Frequency (set by
Parameter 19).
This parameter permits the drive to be programmed for custom motor
applications. In custom motor applications, the voltage above base speed
may need to be controlled differently than below base speed. To be of
practical use, the voltage at Base Frequency must be less than the drive
Maximum Voltage. If Parameter 20 is set to a value less than Parameter 18
(Base Volts), drive output voltage will be limited to the value of Parameter
20 as shown on page 3-35. For additional information about custom motor
applications, contact your A-B sales representative.
Parameter 21 Ċ Local Run
Freq
P
R
P
R
Enter
Off/On
0
1
1
Read and Write
Units
Minimum Value
Maximum Value
Factory Setting
Parameter 21 allows the start pushbutton on an optional local or remote
Control Panel to be enabled or disabled. This parameter does not affect any
of the other Control Panel functions. All local and remote stop inputs
remain active when this parameter is set to 0 or off.
When set to 0, the drive will not accept a start command from the start
pushbutton on the Control Panel. A start command from another source
must be used.
When set to 1, the drive will accept a start command from the Control
Panel in addition to start commands from other sources. Enabling the
Control Panel start pushbutton does not lock out start commands from
other sources.