Edwards EPX HiVac Series, Instruction Manual, Page: 44 / 72

A419-00-880 Issue F
Page 38 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
End User Controller (EUC) and Pump Display Terminal (PDT) menus
4.2 General operation
When you first switch on the EPX system, the Normal display is shown: refer to Figure 22 . You can then press the On
or Off button, or any of the four menu buttons to exit the current menu and enter the corresponding new menu.
Figure 19 shows this menu control logic.
Note that if a warning or alarm is displayed, the orange or red LED will flash until the warning or alarm is
acknowledged by pressing the <ENTER> button. Once acknowledged the LED will remain continuously lit. If a gas flow
warning is generated by low flow and then the gas flow is restored, the orange warning LED will flash until the warning
is acknowledged and will then go out.
4.3 The CANCEL button
You can press the CANCEL button at any time during menu operation. For this reason, we have not shown the use of
the CANCEL button on all of the menu diagrams, but we have shown specific uses where there is no other obvious
way to cancel the current menu option and enter the previous menu option. In general, when you press the CANCEL
button, the current menu option is cancelled and the previous menu option is displayed. Other specific uses of the
CANCEL button are as follows:
z
In the Switch On and Switch Off menus ( Figure 20 and 21 ), when you press CANCEL, the menu is exited and
the display reverts to that which was displayed before On or Off were pressed.
z
In the Status menu ( Figure 23 ), when you press CANCEL the display shows the first two status parameters
(the defaults are EPX current consumption and power consumption).
z
When you enter the password for the setup menu ( Figure 25 ), if you press CANCEL, before you enter the
value, the menu moves back to entry of the previous digit of the password.
4.4 Display text and variable text
In the menu diagrams in Figure 19 to 28 , text shown without chevron brackets in the two-line display symbol is the
actual text that will be shown on the display. In this text, the '
Δ
' symbol is used to show where a digit will be shown;
the value of the digit depends on the sensor data or information you enter into the system.
Text enclosed in chevron brackets (for example, <status>) defines variable text; what is shown on the display
depends on the menu or the EPX system and data entered by the user. The following variable text markers are used
on the menu diagrams:
<status>
Text message giving status of the selected parameter.
<serial number>
This specifies the serial number. The serial number is a number which you can use to identify the EPX system in the
installation.
<parameter>
This is a previously selected parameter or menu option.
<message>
This specifies a warning, alarm or advisory message.