Operation Description Of Hmi; Initial Interface; Main Menu Interface - Emerson Liebert PEX User Manual

The keys and LCD are on the upper right corner of the fan speed controller board, as shown in Figure 3-1. Their
appearance is shown in Figure 3-2.

3.3 Operation Description Of HMI

3.3.1 Initial Interface

The LCD will alternately display 'F01' (the maximum pressure logo) and the larger of condensing pressure 1 and
condensing pressure 2 when the fan speed controller is powered on initially. However, the pressure value will be
displayed as '88.8' on the LCD if:
1. The pressure sensor is not installed.
2. The jumper cap of current pressure sensor is not installed.
3. The pressure sensor is disabled.
The display order is shown in Figure 3-3 (the '16.1' is only an example, and the actual value is determined by the
sampling result).

3.3.2 Main Menu Interface

Press the ESC key on the initial interface, and the main menu interface will appear on the LCD. The main menu
interfaces include the analog main menu interface, current alarm main menu interface, historical alarm main menu
interface and configuration main menu interface. Press the UP key and DOWN key to select a different main menu
interface, and press the ENT key to enter the submenu of the current main menu on the main interface. The switching
operation processes and orders of the main menus are shown in Figure 3-4.
Analog main
menu interface
ENT key
F01
Figure 3-3 Display order of the initial interface
DOWN key
-
F A
-
UP
Current alarm main
key
menu interface
Figure 3-4 Switching operation processes and orders of the main menus
Liebert.PEX Condenser User Manual
Chapter 3 Application Of Fan Speed Controller
LCD
ESC key
UP key DOWN key
Figure 3-2 Keys and LCD
16.1 F01
- -
DOWN key
H
- -
UP
Historical alarm main
key
menu interface
DOWN key
UP key
16.1
-
DOWN key
C
-
UP
Configuration main
key
menu interface
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