7 C M HAPTER

7 C M HAPTER
MAINTENANCE
CHAPTER
7
In This Chapter...
Project Backup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–2
Check Operating Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–2
Check Operating Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–2
Check Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–2
Check Physical Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–3
Run Tests under System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–3
Check Memory Usage via System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . .7–4
Check/Adjust Display Brightness or Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–4
Check Error Log via System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–4
Adjust Touch Panel via System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–4
Replace Battery Periodically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–5
Cleaning the Display Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–5
Check Project Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–6
Checks from C-more Programming Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7–6
Chapter 7: Maintenance
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Maintenance
Although the C-more touch panels require very little maintenance, setting up a routine
maintenance schedule will insure the longevity of the product in your application.
The following are some suggestions of items to include in a preventive maintenance list or
schedule. Most of these items should be scheduled quarterly or bi-annually.
Project Backup
• During a routine preventive maintenance schedule is a good time to make sure that there is
an up-to-date backup of the application project. Although the C-more touch panel with its
programming software has the ability to upload the complete project from a panel through the
programming software, insurance is warranted just in case the worse case scenario happens and
the entire touch panel is destroyed.
Check Operating Environment
• Make sure the touch panel is operating in the proper temperature range:
(0 to 50 °C (32 to 122 °F)).
• Make sure the touch panel is operating within the specified humidity range:
(10–85% RH, non-condensing).
• Make sure the operating environment is free of corrosive gasses.
CORROSIVE
8
Check Operating Voltage
• Check the input voltage that is powering the touch panel to make sure it is within the
appropriate range.
DC: If the panel is being powered with a DC power source, then the acceptable range is
20.4 to 28.8 VDC. (24 VDC, -15%, +20%, minimum of 1.5 A)
AC: If the panel is being powered from an AC/DC Power Adapter, EA-AC, then the
acceptable input voltage range to the adapter is 100-240 VAC, 50/60 Hertz.
Check Status Indicators
• During a routine maintenance check is a good time to take a quick look at the status indicators
on the rear of the touch panel. The Power LED (PWR) indicator should be on and there
should be activity on the TxD and RxD LED indicators when connected serially to a PLC or
control device. Check the status of the CPU LED and compare it to the chart shown in the
illustration below. Any indication of the CPU LED other than a solid green shows there is a
possible problem, and the condition needs to be corrected.
Power LED (Green)
CPU Status LED (Green, Orange & Red)
Off
Power Off
Green
PWR
Normal – CPU Run State
On
Power On
Off
Power Off
CPU
TxD
Red
Memory Error
RxD
BATT
Blinking
Red
Blinking
Orange
Blinking
Green
Operating System not found
LCD Backlight Failure
Serial TxD/RxD LED (Green)
IOlOl–PLC
Power Loss Detection
On Comm. is active
Off No communication
Rear View
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EA-USER-M Hardware User Manual, 2nd Ed. Rev. D, 10/09
Chapter 7: Maintenance
Check Physical Conditions
• Make sure that harmful chemicals are not being used around the panel. Look for any
deterioration of the touch panel’s bezel and front display area. See Chapter 2: Specifications
for a chemical compatibility list.
• Check the mounting gasket to make sure it is sealing properly and
has not deteriorated. Replace the mounting gasket if there are any
signs of deterioration, or if there is any evidence that
moisture/liquids have penetrated to the inside of the enclosure
where the panel is mounted. Information on a replacement
p/n EA-10-GSK
gaskets can be found in Chapter 9: Replacement Parts.
• Check to make sure that none of the cooling vents around the inside section of the touch
panel are clogged with dust or debris. Also make sure that there is clearance around the touch
panel as shown in Chapter 4: Installation and Wiring.
Run Tests under System Setup Screens
• Use the touch panel’s System Setup Screens to test the touch
screen, display, communication ports, beeper and audio output
(only with external amplifier and speaker(s) connected). See
Chapter 5: System Setup Screens for additional details for the
Test Menu.
Test Touch Panel - allows the user to check the analog touch
function of the screen by drawing free hand lines and shapes
across the entire touch area. The display will retain the lines
where the screen has been touched until the Cancel button
is pressed.
Test Display - used to test the display and color rendition. A test pattern will first show
both the primary colors (if applicable) and a gray scale. If the touch screen is not pressed
within a few seconds, the display will go into alternating color sweeps across the screen
until the panel is pressed again. If the screen is pressed when the test pattern first appears,
it will stay in this mode until the Cancel button is pressed.
Test Comm. Port - used to test the functionality of both the 15-pin PLC
communication serial port and the Ethernet port (non -R models only). A loop-back
connector can be fabricated and used on the 15-pin serial port to test both the RS-232
and RS-422/485 communications for the TxD and RxD signals and also the RTS and
CTS signals if applicable. The Test Comm. Port setup screen and Chapter 5 show pinouts for the both the RS-232 and RS-422/485 loop-back connectors. The Ethernet
connection can also be tested for communications if it is at least connected to an
Ethernet hub or switch. If the touch panel is connected to a PLC, then an inquiry test
can also be done to test the communications between the panel and the PLC. Press the
Cancel button when finished to return to the Test Menu screen.
Test Beeper/Sound - used to test the touch panel’s internal beeper and also test the audio
line output port with an external amplifier and speaker(s) connected. Testing the audio
output is done by playing an included internal WAV file. Press the Cancel button when
finished to return to the Test Menu screen.
Test Menu
Test Touch Panel
Test Display
Test Comm. Port
Test Beep/Sound
Main Menu
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Chapter 7: Maintenance
Check Memory Usage via System Setup Screens
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• A good time to check and record the touch panel’s memory
usage for future reference is during a routine maintenance
schedule. The various memory devices being used by the panel
are listed under the tab. This includes the SRAM, Built-in
Flash and any external memory device such as a USB pen drive
or CompactFlash memory. If no external memory device is
inserted, it will not show up on the list. The amount of total,
used and free memory is shown. The memory usage can be
viewed by use of the panel’s System Setup Screen’s Main
Menu, and then selecting the Information button. Look under
the Memory tab. See Chapter 5: System Setup Screens for
additional details on using the Memory tab.
Check/Adjust Display Brightness or Contrast
• Is is good practice to occasionally check the display brightness
or contrast and adjust as required. This is done by using the
Setting Menu in the System Setup Screens. Keep in mind that
only the contrast can be adjusted on the STN type display
models and only the brightness can be adjusted on the TFT
type display models. See Chapter 5: System Setup Screens for
additional details.
Check Error Log via System Setup Screens
• Another good practice is to review the touch panel’s Error Log.
The log can be viewed by use of the panel’s System Setup
Screen’s Main Menu, and then selecting the Information
button. Look under the Error tab. See Chapter 5: System
Setup Screens for additional details on using the Error tab,
Appendix A: PLC Protocol Error Codes for a list of the error
codes as they relate to the specific PLC that is being used with
a description of the error, and Appendix B:Touch Panel
Runtime Errors for a list of errors that may occur when the
panel is in operation.
Adjust Touch Panel via System Setup Screens
• It is recommended that a regularly scheduled maintenance
program include adjusting the touch panel. The adjustment
can be looked at as “calibrating” the touch area of the panel.
The procedure should also be done anytime that it seems the
touch area being pressed for an object is out of position by a
small amount. The procedure is done by using the Setting
Menu in the System Setup Screens and then selecting the
Adjust Touch Panel button. See Chapter 5: System Setup
Screens for additional details.
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Chapter 7: Maintenance
Replace Battery Periodically
• The lithium battery in the touch panel is used to maintain the system SRAM
retentive memory and the CPU date/time registers when the unit is without
external power. Before replacing the battery, back-up the data in your SRAM
retentive memory as a precaution. Input power needs to be maintained to
the panel during battery replacement or the SRAM retentive memory and
date/time registers will be cleared. Typical battery life is five years, which
includes panel runtime and normal shutdown periods. The battery’s status
can be checked under the General tab of the Information screen of the
System Setup Screens, see Chapter 5. However, consider installing a fresh
battery if your battery has not been replaced recently and the unit will be
without power for a period of more than ten days. A replacement battery can
be purchased from AutomationDirect as part number D2-BAT-1
(#CR2354).
D2-BAT-1
CAUTION - The battery used in this device may present a risk of fire or chemical burn if mistreated. Do
not recharge, disassemble, heat above 100 °C (212 °F) or incinerate. Replace battery with
AutomationDirect part number D2-BAT-1 or CR2354 only. Use of another battery may present a risk of
fire or explosion. Dispose of used battery properly. Keep away from children.
Perchlorate Material, special disposal handling may apply
Cleaning the Display Screen
• The display screen should be cleaned periodically by wiping
it with a lint free damp cloth using a mild soap solution.
Dry the surface when finished with a lint free cloth. Do not
clean with ammonia based products. The ABS material the
bezel is made from is reactive with ammonia.
• The longevity of the display can be increased by the use of a
non-glare screen protector, p/n EA-XX-COV2, where XX =
EA-6-COV2
touch panel screen size, 6, 8, 10, 12, or 15. See Chapter 3:
Accessories for additional information on the screen
protectors.
• To prevent damage to the display screen, avoid touching the screen with sharp objects,
striking the screen with a hard object, the use of abrasives near the screen, or using excessive
force when pressing the touch screen. In the event that the touch screen membrane becomes
damaged or scratched, the bezel, which includes the clear membrane window, can be replaced
on the 8”, 10”, 12” and 15” touch panels. See Chapter 9: Replacement Parts for additional
information on the replacement bezels. The bezel with clear membrane window can be
replaced on the 6” touch panels by calling our technical support department at 770-844-4200
to make arrangements for returning the unit for repair.
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Chapter 7: Maintenance
Check Project Functionality
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• During a routine maintenance schedule is a good time to check the functionality of your
application, making sure that various areas on different screens do what they were designed to
do. An outline or specification for the application is a useful tool for testing the various aspects
of your application. As a starting point, you may want to run through all the screens to make
sure they are accessible.
• If there are any trouble-shooting procedures built into the touch panel application, now is a
good time to also check these aids.
Checks from C-more Programming Software
• If you have a PC available with the C-more programming software, EA-PGMSW, installed,
and the PC is connected to the touch panel, there are checks you can make to the status of the
touch panel by using the Panel Information... feature located under the Main Menu heading
Panel. This includes the following:
• Connect Panel Information
• Memory availability and usage
• Power Voltage
• Battery Voltage:
• Revisions
• Other functions that can be accessed from the programming software directly to the touch
panel include: Display Screen, Reboot, Adjust Clock, Memory Clear, and Update Firmware.
Additional information for these functions can be found in the C-more programming software
on-line help.
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EA-USER-M Hardware User Manual, 2nd Ed. Rev. D, 10/09
Chapter 7: Maintenance
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