McQuay IM 987
57
MicroTech III Controller Operation
MicroTech III Controller Operation
Using the Keypad/Display
The keypad/display consists of a 5-line by 22 character
display, three keys and a “push and roll” navigation wheel.
There is an Alarm Button, Menu (Home) Button, and a Back
Button. The wheel is used to navigate between lines on a
screen (page) and to increase and decrease changeable values
when editing. Pushing the wheel acts as an Enter Button.
Figure 68: Keypad Controls
The first line on each page includes the page title and the line
number to which the cursor is currently “pointing”. The line
numbers are X/Y to indicate line number X of a total of Y lines
for that page. The left most position of the title line includes an
“up” arrow to indicate there are pages “above” the currently
displayed items, a “down” arrow to indicate there are pages
“below” the currently displayed items or an “up/down” arrow
to indicate there are pages “above and below” the currently
displayed page.
Each line on a page can contain status only information or
include changeable data fields. When a line contains status
only information and the cursor is on that line all but the value
field of that line is highlighted meaning the text is white with a
black box around it. When the line contains a changeable value
and the cursor is at that line, the entire line is highlighted. Each
line on a page may also be defined as a “jump” line, meaning
pushing the navigation wheel will cause a “jump” to a new
page. An arrow is displayed to the far right of the line to
indicate it is a “jump” line and the entire line is highlighted
when the cursor is on that line.
The keypad/display Information is organized into five main
menus or menus groups; Alarm Lists Menu, System Summary
Menu, Standard Menus, Extended Menus and Advance
Menus.
Note:
Only menus and items that are applicable to the specific
unit configuration are displayed.
The Alarm Lists Menu includes active alarm and alarm log
information. The System Summary Menu includes status
information indicating the current operating condition of the
unit. Standard Menus include basic menus and items required
to setup the unit for general operation. These include such
things are control mode, occupancy mode and heating and
cooling setpoints. Extended Menus include more advanced
items for “tuning” unit operation such as PI loop parameters
and time delays. Advanced Menus include the most advanced
items such as “unit configuration” parameters and service
related parameters. These generally do not needing changing
or accessing unless there is a fundamental change to or a
problem with the unit operation.
Passwords
When the keypad/display is first accessed, the Home Key is
pressed, the Back Key is pressed multiple times, or if the
keypad/display has been idle for the Password Timeout timer
(default 10 minutes), the display will show a “main” page
where the user can enter a password or continue without
entering a password. The three password levels available are
Level 2, Level 4, and Level 6, with Level 2 having the highest
level of access. Entering the Level 6 password allows access to
the Alarm Lists Menu, System Summary Menu, and the
Standard Menus group. Entering the Level 4 password allows
similar access to Level 6 with the addition of the Extended
Menus group. Entering the Level 2 password allows similar
access to Level 4 with the addition of the Advanced Menus
group. The Level 2 password is 6363, the Level 4 is 2526, and
the Level 6 password is 5321. Continuing without entering one
of these three levels allows access only to the Alarm Lists
Menu and the System Summary Menu.
Note:
Alarms can be acknowledged without entering a
password.
Table 13: Password Main Page
3/23
System Summary
Advanced Menus
Alarm Lists
Unit State=
Cooling
Clg Capacity=
25%
1/3
McQuay AHU
Enter Password
Continue W/O Password
Version Information
