Technical Section
7
PART TWO
Technical Section
The AOC is ready to use after being properly installed. The pressure sensor is factory calibrated prior to shipping
and should not need adjustment. The flow stations must be calibrated prior to using them. The Digital Interface
Module (DIM) is programmed with a default configuration that can be easily modified to fit your application.
The Technical section is separated into five parts that cover all aspects of the unit. Each section is written as
independently as possible to minimize flipping back and forth through the manual for an answer.
The
section explains the programming keys on the DIM. In addition, the programming
sequence is described, which is the same regardless of the menu item being changed. At the end of this section is an
example of how to program the DIM.
The
section lists all of the software items available to program and change. The items are
grouped by menu which means all set points are in one menu, alarm items in another, etc. The menu items and all
related information is listed in table format and includes menu item name, description of menu item, range of
programmable values, and how the unit shipped from the factory (default values).
The
section; explains the AOC controller theory of operation, lists the menu items that need to be
programmed for the system to operate, provides a programming example, and provides information to confirm
system is operating correctly.
The
section describes the required technique to compare the pressure sensor reading to a thermal
anemometer, and how to adjust the zero and span to obtain an accurate calibration. This section also describes how
to zero a TSI flow station transducer.
The
section covers all routine maintenance of equipment, along with a list of repair
parts.
Software Programming
Programming the S
URE
F
LOW
controller is quick and easy if the programming keys are understood and the proper
keystroke procedure is followed. The programming keys are defined first, followed by the required keystroke
procedure. At the end of this section is a programming example.
NOTE
: The unit is always operating while programming unit (except when checking the control outputs). When a
menu item value is changed, the new value takes effect
immediately
after saving the change.
NOTE
: This section covers programming the instrument through the keypad and display. If programming through
RS-485 communications, use the host computer’s procedure. The changes take place immediately upon
“saving data.”
Programming Keys
The four keys with blue characters (refer to Figure 4) are used to program or configure the unit to fit your particular
application. Programming the instrument will change how the unit functions, so thoroughly review the items to be
changed.
