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Chapter 4: E2 Controller
4.5.2 Information Menu Loop
The Info menu screens may be accessed from the Main screen by simply
scrolling with the Up
and Down
arrow keys. The same screens may
also be viewed if you enter the Info menu by pressing the "Prg" key. The
Info menu displays screens that provide current temperature and relative
humidity conditions and shows the modes the A/C system is currently
operating. There are no adjustable parameters in this loop. From the Info
loop, you may view the display screens as they apply to the unit
configuration.
4.5.2.1 Operating Conditions
The first Info screen displays the current date and time, and provides state
of operation icons.
The actual control temperature (°F) and relative Humidity (rh) are always
displayed, and the return ("RetT") or optional remote supply ("RSPT")
temperature and dewpoint (dp) will appear, dependent on the T/H sensor
selection. The values displayed are used by the controller to develop
control output signals for managing system operations.
4.5.2.2 Return Temperature Sensor
Displays relative humidity as measured by the return temperature/humidity
(T/H) sensor inputs. The return T/H sensor is typically factory-mounted
inside the cabinet. As an option, the return T/H sensor may be removed
from the cabinet and remotely mounted in the hot aisle.
4.5.2.3 Return Humidity Sensor
Displays relative humidity as measured by the return T/H sensor inputs.
Return dewpoint is calculated by the controller based on the return T/H
sensor inputs and then shown at the bottom of the display screen.
4.5.2.4 Remote Supply (RSP) Temperature Sensor
Displays Relative Humidity as measured by an optional, remote-mounted
supply T/H sensor inputs.
4.5.2.5 Remote Supply (RSP) Humidity Sensor
Displays Relative Humidity as measured by the optional, remote-mounted
supply T/H sensor inputs. Remote dewpoint is calculated by the controller
based on the remote supply T/H sensor inputs and shown at the bottom
of the display screen.
NOTE: Display screens shown with a dashed border appear only if the
applicable feature is enabled.
Figure 4-21. Information menu loop.
(Continued on next page.)
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Table of Contents
Troubleshooting
