Rockwell Automation 1333 Drive, 3/4-5HP, 230-575V Series D - Manual (Page 128)

D
Appendix
D-1
Application Data
Important User Information
Because of the variety of uses for this equipment and because of the
differences between this solid state equipment and electromechanical
equipment, the user of and those responsible for applying this equipment
must satisfy themselves as to the acceptability of each application and use
of the equipment. In no event will Allen-Bradley Company be responsible
or legal for indirect or consequential damages resulting form the use or
application of this equipment.
The illustrations shown are intended solely to illustrate the accompanying
text. Because of the many variables and requirements associated with any
particular installation, the Allen-Bradley Company cannot assume
responsibility or liability for actual use based upon the illustrative uses and
applications.
Remote Manual and Remote Auto
The Bulletin 1333 Series D may use the Directional Pushbuttons on the
Speed Reference Switching
Local Control and Programming Panel or an external source as its speed
reference. The method of speed control that is used is determined by
parameter programming as explained in Chapter 5.
Four types of signals may be used as the external speed reference.
1. A 10k
Ω
, 2W potentiometer.
2. A 0-5V DC reference signal.
3. A 0-10V DC reference signal.
4. A 4-20 mA DC reference signal.
As explained in the Control and Signal Wiring section of Chapter 4, only
one of these signals should be connected to the Control and Signal Wiring
Terminal Block at any time.
There are times however, when a user may want the option of switching
between a remote analog speed reference and a remote manual speed
reference. The 1333 Series D normally will require reprogramming and
reconnection to accomplish this. This application describes an alternate
method of external speed selection. Users must satisfy themselves that this
alternate method is safe in their particular application and that its use
complies with applicable codes and standards.