Maintenance Considerations For Maintenance Panel; Color Touchscreen Display Functional Description - Siemens Maxum II Manual

Safe Operation

5.3 Color Touchscreen Display Functional Description

Note
In addition to the Maintenance Panel installed on the analyzer, there is an emulator (called
HMI emulator) available through the PC-based Gas Chromatograph Portal software. The HMI
emulator can perform most of the tasks that can be performed from the physically installed
Maintenance Panel.
Note
Some older analyzers may have a different panel, called Maintenance Panel Level 1, which
does not have an LCD screen or keypad. This device consists of a panel of four LEDs mounted
on the electronics enclosure door. Of particular importance on the Level 1 panel is the "Purge"
LED, which lights when purge pressure is lost.
5.2

Maintenance Considerations for Maintenance Panel

No specific field maintenance is required for the Maintenance Panel. If the Maintenance Panel
fails it must be replaced. During replacement, care should be taken to prevent damage to the
gaskets surrounding the face of the Maintenance Panel (in order to prevent leaking of purge
air).
5.3 Color Touchscreen Display Functional Description
The software and parameter settings in the Maxum II chromatograph system can be accessed
using the PC-based workstation software and also via a user access display panel that is
mounted on the front door of the Maxum II electronics enclosure. Two types of display panel
exist, both of which can be used to perform the same user functions. The newest version,
which is described in this section, is the Color Touchscreen Display. The other, described
section 5-1, is the Maintenance Panel (which is also sometimes called a Human Machine
Interface, or HMI).
The interactive Color Touchscreen Display is mounted on the analyzer door with a series of
status LEDs located to the right of the display.
Most maintenance and operation functions for the Maxum II can be performed using this
display. The Color Touchscreen Display is the primary means for a user located at the analyzer
site to obtain alarm information and purge status of the Maxum II. The display can be operated
whenever power is applied to the Maxum II, even if the installation area contains fire hazards.
Of particular importance are the "Purge" and "Power" LEDs located to the right of the display.
If an APU is not installed, the "Purge" LED flashes when purge pressure is lost. The "Power"
LED is lit at all times when power is applied to the analyzer. Note that the "Fault" and "Warning"
LEDs are related to the trouble reporting systems of the Maxum II but are not applicable to the
safety systems.
58
Explosion Protection Safety Standards
Manual, August 2017, A5E02220442001 Rev 8