Cover Glass Monitor
Operation Manual
WARNING
WORKING AROUND HIGH-POWERED LASERS
CAN BE DANGEROUS
COPYRIGHT
©2015 Laser Mechanisms, Inc. All rights reserved.
No part of this publication may be reproduced in any
form, or by any means without the prior written
permission of Laser Mechanisms, Inc.
Laser Mechanisms, Inc.’s cutting heads must never
be operated without the cutting head interlock switch
being connected. The switch should be CLOSED
when the head is properly attached. In the event of a
crash or the cutting head becomes dislodged from
its normal operating position, the switch will OPEN.
This interlock switch must be connected in a
circuit in such a way that it will immediately turn
off the laser and stop all machine motion. Check
the wiring diagrams for your system.
PRODUCT WARRANTY
Laser Mechanisms, Inc. warrants this product
against defects in material and workmanship for a
period of one year from the date of shipment from
Laser Mechanisms Inc. or an authorized distributor.
During the warranty period, Laser Mechanisms, Inc.
will at its option, repair or replace products that
prove to be defective.
Serious personal injury and/or equipment
damage can occur if the head becomes
dislodged and:

The head interlock is not connected
properly.
For all products returned to Laser Mechanisms, Inc.
for warranty service the customer must:

Any interlock in the Laser Mechanisms’
product or laser system is defeated.

Call Laser Mechanisms, Inc. for a Return
Material Authorization (RMA) number.

Properly pack the product with the RMA number
on the outside of the package. Include in the
package, all cables, and all accessories shipped
with the product along with a description of the
problem.

Prepay shipping charges to Laser Mechanisms,
Inc.

Insure the shipment in case of loss or damage.
Laser Mechanisms, Inc. will not accept any
liability in case of damage or loss.
Laser Mechanisms, Inc. assumes no responsibility
or liability for interlock switches or circuits and all
interlocks are the sole responsibility of the purchaser
of this head.
It is the responsibility of the integrator or end user to
install, connect and activate all interlocks in
compliance with the applicable ANSI, CEN, DIN, etc.
standard.
All wiring should be done by personnel
knowledgeable in electrical wiring and in accordance
with the national and local electrical codes.
Laser Mechanisms, Inc. will pay the shipping
charges, duties and taxes for the products returned
to Laser Mechanisms, Inc. from outside the United
States.
DISCLAIMER
The information in this manual is subject to change
without notice.
The foregoing warranty will not apply if damage is
incurred resulting from improper or inadequate
maintenance by the customer, unauthorized
modifications or misuse, operation of the product
outside its specifications, interlocks not connected
properly, improper site preparation, parts or
assemblies not supplied by Laser Mechanisms, Inc.
or unauthorized repair by non-Laser Mechanisms,
Inc. authorized personnel.
Laser Mechanisms, Inc. makes no warranty of any
kind with regard to the material in this manual,
including but not limited to, the warranties or
merchantability and fitness for a particular purpose.
Laser Mechanisms, Inc. shall not be liable for errors
contained herein or for incidental or consequential
damages in connection with furnishing, performance
or use of this product.
For complete warranty information visit our web site
at www.lasermech.com.
Corporate names and trademarks stated herein are
the property of their respective companies.
PLMNL0231 REV. A
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Cover Glass Monitor Operation Manual
INITIAL INSPECTION
TERMS USED IN THIS MANUAL
Inspect all shipping containers for damage as soon
as the device arrives. It is your responsibility, the
recipient, to notify the freight company of any
damage. The freight company will require you to
provide the container that any goods were shipped
in, all shipping documentation and a list of all
damages. Photographs of the damage are helpful in
settling a freight claim.
WARNING: The user could be injured
if the warning is not followed.
CAUTION: The device or system
could be damaged if the CAUTION is
not followed.
Do not return damaged goods to the factory
without a Return Material Authorization Number
(RMA number).
NOTE: Clarification of a step or steps.
Although it is Laser Mechanisms, Inc.’s intent to
insure you are up and running as soon as possible,
damage incurred during shipment must be settled
with the freight company before arranging for repairs
or replacement. No return shipments will be
accepted without an RMA number clearly printed on
the outside of all shipping containers. Failure to
follow this procedure could void any warranty
coverage on your head. Call your sales engineer at
Laser Mechanisms, Inc. for a RMA number.
SAFETY

WARNINGS: Follow all warnings in this
manual.

SAFETY GLASSES: Everyone in the area
where the laser is being used must wear laser
safety glasses designed for the laser being
used.

SECONDARY REFLECTIONS: Secondary
reflections are dangerous; never expose any
part of your body to a reflected laser beam.
Check all items received against the packing list
to verify that all the items were received.

INTERLOCKS: Interlocks are safety devices
and should never be defeated.
Please note the product you receive may differ
slightly from the illustrations in this manual.
While the drawings may differ, the basic
procedures described within remain the same.

ADJUSTMENTS: Always turn off or put the
laser in standby before making any
adjustments to beam delivery components.

BEAM DUCT: Never open any component of
the beam duct while the laser is operating.
Always turn the laser off before servicing any
beam duct components.

MANUALS: Always read the instruction
manuals before attempting to install or make
adjustments to any beam delivery component.
Carefully remove the device from its shipping
container and all packing material to avoid damage.
Save all packaging material, including the sealed,
padded pelican case, in the event the head requires
shipping or storage.
PLMNL0231 REV. A
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Cover Glass Monitor Operation Manual
TABLE OF CONTENTS
1
2
Introduction ........................................................................................................................................................1
1.1 Control Box ......................................................................................................................................... 2
1.2
Cover Glass Holder............................................................................................................................. 2
1.3
Cover Glass Monitor Software ............................................................................................................ 2
Installation ..........................................................................................................................................................3
2.1 Install the Cover Glass Monitor Software ........................................................................................... 3
2.2
Connect the Cover Glass Monitor Cables .......................................................................................... 3
2.3
Install the Driver .................................................................................................................................. 4
2.4
Mounting the Control Box ................................................................................................................... 5
3
Quick Set-Up Guide ...........................................................................................................................................6
4
Operation ............................................................................................................................................................8
4.1 Getting Started .................................................................................................................................... 8
5
4.2
Start-Up Screen .................................................................................................................................. 8
4.3
Settings ............................................................................................................................................... 9
4.3.1
Present Threshold ......................................................................................................... 11
4.3.2
Dirty Threshold .............................................................................................................. 11
4.4
Logic Diagrams ................................................................................................................................. 12
4.5
Faults ................................................................................................................................................ 12
Service.............................................................................................................................................................. 13
5.1 Cleaning Optics................................................................................................................................. 13
5.2
Changing the Cover Glass ................................................................................................................ 14
6
Specifications .................................................................................................................................................. 15
7
Glossary ........................................................................................................................................................... 16
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Cover Glass Monitor Operation Manual
1 Introduction
The most frequent application of the cover glass
monitor is welding (see Figure 2 and Figure 3), but
it can also be used in cutting applications.
The Laser Mechanisms cover glass monitor is a
device for monitoring the status of your cover glass.
It consists of:
 Control box
 One or two cover glass holders (“drawers”)
 Connecting cables
 Computer software for monitoring the status
and configuring the cover glass monitor
See Figure 1.
Figure 2
Figure 1
When properly configured and integrated into your
laser system, the cover glass monitor will check;
 Cover glass temperature
 Cover glass presence
 Cover glass optical condition
The cover glass monitor uses a special cover glass
drawer. It is for use ONLY with:
 1.5 inch cover glass holder (PLFLH0389)
which uses cover glass PLLCG0060
 2.0 inch cover glass holder (PLFLH0393)
which uses cover glass PLLCG0067
Figure 3
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Cover Glass Monitor Operation Manual
1.1 Control Box
The control box is the central interface for the cover
glass monitor. There are several connections on the
control box:
 A terminal block for power from your 24V
DC source
 A connection point for the cable(s) that
connect the control box to the cover glass
holder(s)
 A terminal block for connecting to the digital
I/O of your machine
 A USB port for connecting to the computer
running the Cover Glass Monitor Software
1.2 Cover Glass Holder
The cover glass holder contains the detectors used
to monitor the cover glass. It also provides an easy
method of changing the cover glass without having
to use tools.
1.3 Cover Glass Monitor Software
The cover glass monitor software, loaded on your
computer, is only needed to:
 check the status of the cover glass
 configure the control box.
Once it is configured, the control box can operate
independently of the software.
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Cover Glass Monitor Operation Manual
2 Installation
2.1 Install the Cover Glass Monitor
Software
In order to operate the cover glass monitor, the
software must be downloaded onto a customer
supplied a Windows based computer.

The current software can be downloaded from
the web at:
http://lasermech.com/coverglassupdates.asp.
2.2 Connect the Cover Glass Monitor
Cables
In order to operate the cover glass monitor, it must
be connected to the control box (PLCSA0042). See
Figure 4.
1. Insert the male 4 pin connector from the
connecting cable attached to the cover glass
holder into the connection on the control box
labeled Input A. Tighten the fastening nut.

It is possible to monitor two cover glasses
simultaneously.
2. If applicable, insert the second male 4 pin
connector from the connecting cable attached to
the second cover glass holder into the connector
on the control box labeled Input B. Tighten the
fastening nut.
3. Insert the USB cable into the connector on the
control box labeled USB. The other end is
connected to the user supplied computer.
Figure 4
4. Connections to your system are made through
the 12 position terminal block on the connector
box.

There are 3 inputs and 6 outputs. Each can
be configured as sinking or sourcing.

The logic associated with each output can
be based on the cover glass sensors and
the status of the three inputs.

Configuring the logic is done using the cover
glass monitor software.
See the chart on the next page for a detailed list
of the available input and output connections.
5. Connect the user-supplied, 24V DC power
source to the three position terminal block on the
control box labeled POWER.
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Cover Glass Monitor Operation Manual
2.3 Install the Driver
COVER GLASS MONITOR CONNECTIONS
USB Port
Before operating the cover glass monitor, it must be
connected to a customer supplied a Windows based
computer. If the system is connected and is not
recognized, install the driver (Freescale Virtual Com
Port, located in the same folder as the software)
using the following:
Power
1
+24 VDC
2
0V
3
Earth Ground

Input A
1
+24 VDC
2
1.25-6.25 V for 10 to 70°C
3
Detector
4
0V
Administrator rights to your computer are
required to complete the driver installation.
1. Navigate to the device manager. The display is
a list of all the devices installed.
2. Right-click on “COVER GLASS MONITOR” and
select “Update Driver Software…”
3. Click on “Browse my computer for driver
software”.
Input B
1
+24 VDC
2
1.25-6.25 V for 10 to 70°C
3
Detector
4
0V
4. Click on the “Browse” button.
5. Locate and open the folder containing the Cover
Glass Monitor software, click on the “Driver”
folder, and then click “OK”.
6. Click on the “Next” button.
Machine Connections
7. A security message may appear warning that
Windows can’t verify the publisher of this driver
software.
1
Input Common
2
Input 1
3
Input 2
4
Input 3
5
Output Common 1-3
8. The driver should now install. Once it has
completed, click “Close”.
6
Output 1
7
Output 2
9. Look under the “Ports (COM & LPT)” category in
the device list.
8
Output 3
9
Output Common 4-6
10
Output 4
11
Output 5
12
Output 6
PLMNL0231 REV. A

4
If this happens, click on “Install this driver
software anyway”.

You should now see “Virtual Com Port”
followed by a COM number in parenthesis.

Make note of this number. It is the port you
will need to select to use the Cover Glass
Monitor software.
Cover Glass Monitor Operation Manual
2.4 Mounting the Control Box
There is a mount pattern on the control box
(PLCSA0042) so that it can be conveniently
located near the cover glass holder(s). See
Figure 5 for the mounting pattern.
Figure 5
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Cover Glass Monitor Operation Manual
d. To enable the cover glass holders, open
the settings menu and click on Enable
Cover Glass A and/or Enable Cover
Glass B.
3 Quick Set-Up Guide
1. Make all of the connections to the cover
glass monitor control box
(See Section 2.2 for more details):
4. Set the detector levels for present and dirty:
a. Connect the connecting cable(s)
between the cover glass holder(s) and
the control box.
a. To set the present threshold:
b. Connect the USB cable between your
computer and the control box.
c.
Connect the discrete inputs and outputs
from the 12-position terminal block of
the control box to your system.
o
Insert a cover glass into the holder.
o
Record the detector reading.
o
Multiply the reading by 0.9
(to subtract 10%).
o
In the Settings menu, choose Set
Cover Glass A or B, and click
Threshold Present. Then enter the
value calculated in the previous
step.
o
Repeat steps 4a, if needed, for an
additional cover glass holder.
d. Connect a 24 VDC power supply to the
3-position terminal block of the control
box.
2. Prepare the computer:
a. Download CoverGlassMonitor from the
website:
http://lasermech.com/coverglassupdates
.asp
b. To set the dirty threshold:
o
b. Install the driver, which is included with
the downloaded software. See Section
2.3 for more details.
c.
Open the CoverGlassMonitor
application.
d. To connect to the cover glass monitor,
click on the port drop down menu and
choose the appropriate port.
For steps 3-5, see Section 4.3 for more details:
b. Label the inputs and outputs based on
your system’s requirements.
To configure the output associated with
each output, click on the output number.
Then, add elements to or remove
elements from the logic chain by clicking
the checkbox for the element.
PLMNL0231 REV. A
Setting
500
1600
1000
1800
>1500
1900
In the Settings menu, choose Set
Cover Glass A or B, and click Dirty
Threshold. Then enter the value
from the chart above.
o
Repeat Step 4b, if needed, for an
additional cover glass holder.
Your system may require a
different dirty threshold setting.
Carefully observe the detector
reading during initial processing
to determine the optimum
setting.
lmdetector
c.
Power (W)
o
3. Configure the cover glass monitor:
a. To unlock the settings, click on the
Lock/Unlock button and enter the
password
The detector is affected by differing
laser power. Use the chart below as
a reference:
6
Cover Glass Monitor Operation Manual
5. Set the maximum temperature limits:
a. In the Settings menu, choose Set Cover
Glass A or B, and click Maximum
Temperature. Enter the desired
maximum temperature.
The default setting is 50°C.
b. Repeat Step 5b, if needed, for an
additional cover glass holder.
If the system uses two cover
glasses, you can also set the
maximum temperature
difference between them.
c.
To set the temperature difference:
o
In the Settings menu, click on Set
Temperature Difference Limit. Then
enter the desired value.
The default setting is 5°C.
Now, your cover glass monitor is configured and
ready for operation.
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Cover Glass Monitor Operation Manual
4.2 Start-Up Screen
4 Operation
Once the cover glass monitor is connected, the startup screen appears (see Figure 6):
4.1 Getting Started
1. Verify the cover glass monitor software is
installed on a customer supplied a Windows
based computer. If it is not see Section 2.1.
2. Verify that all of the cables are connected
properly. See Section 2.2.
3. Verify the cover glass monitor driver is
installed on a customer supplied a Windows
based computer. If it is not see Section 2.3.
4. Double click the Cover Glass Monitor icon to
start the software.
5. Choose the applicable port form the drop
down menu. See Figure 6. If the applicable
port is not on the drop down list, see Section
2.3.
The Cover Glass Monitor uses a temperature sensor
and photo detector in each drawer to determine the
condition of the cover glass.
 A colored scale signals whether the value is
in the acceptable range.
o Green represents values safely within
the acceptable range.
o Red represents values that are not
within the acceptable range.
 Each thermometer monitors and displays
the current measured temperature. The
display also shows the upper and lower
limits.
 Each detector monitors and displays the
current measured value. The display also
shows the Present and Dirty thresholds.
o The present threshold represents the
lower limit of acceptable reflection
detected. See Section 4.3.1 for
calculating the present threshold for
your application.
o The dirty threshold represents the upper
limit of acceptable reflection detected.
See Section 4.3.2 for calculating the
dirty threshold for your application.
PLMNL0231 REV. A
Figure 6


8
The File drop down allows the choice to exit the
program.
The Edit drop down allows typical basic
functions of an edit menu: Undo, Cut, Copy,
Paste, Delete, and Select All.
Cover Glass Monitor Operation Manual

The Settings drop down allows access to control
the cover glass monitor settings. See Section
4.3 for more details. See Figure 7.
4.3 Settings
Settings are stored in the control box, allowing the
cover glass monitor to operate without a computer.
However, the settings can be saved on the
computer.
 Saved settings can be loaded from your
computer. To load previously saved settings:
o Click on the Settings drop down
o Choose Load Settings
o Navigate to and choose the predefined
setting file.
 To save settings to your computer:
o Click on the Settings drop down
o Choose Save Settings
o Navigate to and choose a place to save
the setting file.
The cover glass holder(s) can be enabled or
disabled from the Settings drop down. See Figure 7.
To enable or disable a monitor:
1. Click on the Settings drop down
2. Choose Disable/Enable Cover Glass A
and/or Disable/Enable Cover Glass B, as
necessary.
 The checkmarks in Figure 7 indicate that
the cover glass monitors are already
enabled.
Figure 7
See Figure 6 for the remaining items:






The Port drop down menu allows the choice of
which USB communications port to use for
monitoring. Typically, only the applicable port
will be present.
The Disconnect button allows disconnection
from the selected USB port.
Connected inputs and outputs (ON condition)
are represented by a green status light on the
control box.
The Lock/Unlock button allows access to control
of all settings.
Detector A senses the presence and quality of
the first cover glass to be monitored.
Temp. A displays the temperature of the first
cover glass to be monitored.
The settings must be unlocked prior to making any
changes. In order to unlock the settings do one of
the following:
1. Click on the Settings menu and choose
Unlock Settings. See Figure 7.
OR
2. Click on the Lock/Unlock button. See Figure
6.
The following items are only displayed if
a second cover glass monitor is
enabled.



3. In the pop-up window that appears, enter
the following password:
lmdetector
Difference displays the variation between the
temperatures of the two cover glasses to be
monitored.
Temp. B displays the temperature of the second
cover glass to be monitored.
Detector B senses the presence and quality of
the second cover glass to be monitored.
PLMNL0231 REV. A
4. Click OK.
9
Cover Glass Monitor Operation Manual
See Figure 8.

Now, any of the settings enclosed in a box
can be modified.

Note that the Lock/Unlock button is now
“unlocked.”

The choices that appear are Present
Threshold, Dirty Threshold, Maximum
Temperature, and Use Defaults

Click on the desired setting to change.
See Figure 9.
3. Click on the Settings drop down. See Figure
7.

Choose Set Temperature Difference
Limit.
After choosing the setting to modify, a pop-up similar
to Figure 10 will appear. It will include the following:
o
A field to enter the new setting value
o
The current setting value
o
The possible range of setting values
o
OK button to confirm the new setting
value
o
Cancel button to exit the change setting
pop-up box.
Figure 8
There are (3) three methods you can use in order to
choose a setting to modify.
1. Double click on a value that has a box
around it. See Figure 8.
2. Click on the Settings drop down. See Figure
7.

Hover over Set Cover Glass A or Set
Cover Glass B, as applicable. See
Figure 9.
Figure 10

Modify the setting as necessary.

Repeat the process (choose setting and update
it using the pop-up) to modify additional settings
as necessary.
Figure 9
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Cover Glass Monitor Operation Manual
To determine a dirty threshold:
Input and output names can also be modified.
Names can include letters, numbers and spaces.




1. Find your laser power on the horizontal
axis of the graph in Figure 11.
If necessary, unlock the settings according
to step 3 of this section.

If necessary, enter the password according
to step 4 of this section.
The red solid (upper) line on the graph
represents a dirty cover glass.

The green dashed (lower) line on the graph
represents a clean cover glass.
Click on the name of the desired input or
output.
Modify the name as desired.
o
Input names may be up to 9 characters
o
Output names may be up to 10
characters.

2. Follow the power value vertically to a
location between the green and red
lines.
3. Note the reading value on the vertical
axis that corresponds to that location.
This reading value is a reasonable
approximate dirty threshold setting.
The absolute range of the detector
values is 0 to 4095.
4.3.1 Present Threshold
Each cover glass style has a unique
present threshold. Initial set up
MUST include setting the present
threshold.
To properly set the Present threshold,
follow these steps:
Figure 11
1. Insert a cover glass into the holder
and note the reading.
2. Multiply the reading by 0.9
(to subtract 10%).
3. Enter the value calculated in Step 2.
4. Remove one or both cover glasses
and verify the detectors are reading
below the Present threshold.
For example:
A 1000W (1kW) laser has an optimum clean
threshold of approximately 1475 and a maximum
dirty threshold of approximately 1900. A reasonable
dirty threshold setting would be approximately 1800.
If you are monitoring two cover
glasses simultaneously, repeat
steps 1-4 above for the second
cover glass.
Once all setting modifications are complete, the
settings must be locked again.

OR
4.3.2 Dirty Threshold

The dirty threshold is less precise and is
based on the power of the laser used.
PLMNL0231 REV. A
Click on the Settings menu and choose
Unlock Settings. See Figure 9.
11
Click on the Lock/Unlock button.
See Figure 6.
Cover Glass Monitor Operation Manual
4.4 Logic Diagrams
The logic diagram for any input or output can be
modified. To modify an input or output
(see Figure 12):
1. If necessary, unlock the settings and enter
the password according to Section 4.3.
2. Click on the number representing the output
to be modified. See Figure 8 for an example
list of inputs and outputs.
 The appropriate logic diagram will
appear.
3. Click the appropriate check box to add or
remove the desired check marks.
4. Click the Set button at the bottom center of
the logic diagram.
5. The new listing of inputs and/or outputs will
appear at the top of the logic diagram.
6. After all modifications are complete, click the
red X in the upper right corner of the logic
diagram to close it.
Logic diagrams are a useful trouble shooting tool.
Click on the number representing an output on the
start-up screen (see Figure 6) to view the
corresponding logic diagram.
Figure 12 shows an example of the logic diagram
for Output #4 – Everything. In this example there are
no fault conditions (refer to Figure 8 for an example
list of inputs and outputs).
The boxes that are checked in the lower portion of
the logic diagram (A Present, A OK, A Temp OK,
B Present, B OK, B Temp OK, and Temp Diff) define
the conditions that must be met in order to activate
the Everything output.
4.5 Faults
When a fault occurs, the output dependent on that
condition turns off. Also, the corresponding status
light on the control box will turn red.
Faults occur when:
Figure 12



In order to read a fault condition, the
corresponding box MUST be checked on the
logic diagram.

If an input or output is highlighted in green, is in
the ON condition. The condition to activate the
input or output has been met.
A detector goes outside the acceptable
range.

A temperature reading is outside the
acceptable range.

A digital input turns off.
In the Temp A and Temp B sections
(see Figure 6 for a sample image):
o
If an input or output is not highlighted (remains
gray), it signifies the OFF condition. The
condition to activate the input or output has NOT
been met.
PLMNL0231 REV. A

The highest measured value (outside of
the acceptable range) will be shown in
the column in red.
The value outside the
acceptable range will remain
until it is cleared by selecting
Clear Fault Readings in the
Settings menu.
12
Cover Glass Monitor Operation Manual
3. Soak a clean lens tissue (such as Texwipe
Absorband Wipes or equivalent) with
acetone or reagent grade isopropyl alcohol.
4. With the soaked lens tissue, wipe the optic
in one direction.
5. Repeat steps 3 and 4 three times using a
clean lens tissue.
6. Inspect the optic. If there is any dust on it or
it appears cloudy repeat steps 2 through 5. If
it is clean, proceed to step 7.
7. While holding the optic by its edges place a
clean piece of lens tissue over the optic, and
then apply a few drops of Tech Spec lens
cleaner or reagent grade isopropyl alcohol to
the lens tissue.
8. Drag the lens tissue off the surface of the
optic in one direction.
9. Repeat step 7 and 8 three times.
0
10. Rotate the optic 90 and repeat steps 7 and
8 three times.
11. Inspect the optic to make sure that it is
clean.
12. Turn the optic over onto a clean lens tissue
and repeat steps 2 through 11 to clean the
other side.
5 Service
When the cover glass monitor reaches the dirty
threshold (see Section 4.3.2), it is necessary to
clean or change the optic.
5.1 Cleaning Optics
Optics are very sensitive to dust
and debris. It is extremely important
to take every possible precaution to
ensure the optics remain pristine.

Clean optics in a dust free air-conditioned room.

ALWAYS handle optics by their edges, never
touch the optical surfaces.

ALWAYS wear powder free gloves or finger cots
when handling optics and optic holders.

Inspect the optics with high power illumination,
such as Laser Mechanisms pen light (part
number PLTLS0021) under 2X magnification.
The following instructions are provided as a
guide only. Laser Mechanisms Inc. cannot be
held responsible for any damage to optics
resulting from improper cleaning or handling.
Cleaning instructions supplied by the optics
manufacturer should always be followed.
1. Wash hands with soap to remove all oils,
and then put on powder free gloves or finger
cots.
2. Hold the optic by its edges and blow any
dust off with low-pressure dry nitrogen
(2 to 5 PSI) or air from a blow bulb.
DO NOT USE AN AIR
COMPRESSOR.
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5.2 Changing the Cover Glass
4.2.2 Step 2
a. Install the cleaned or new cover glass
by placing it into the holder.
Always wear powder free gloves or finger cots
when handling optics and optic holders.
4.2.3 Step 3
a. Press the face seal ring into the
drawer to retain the cover glass.
See Figure 13.
4.2.1 Step 1
a. Remove the cover glass drawer.

b. Remove the cover glass lens from the
holder by applying pressure with your
fingers to the surface of the cover
glass, opposite the face seal ring.

The face seal ring and cover glass
lens will pop out.

Save the face seal ring.
Replace the existing seal with a new
one if it appears damaged.
b. Reinsert the cover slide drawer into
the head.
Figure 13
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6 Specifications
CONTROL BOX
Enclosure ................................................................................................. 88 mm L x 67 mm W x 30 mm H
Up to (2) Connecting Cables ....................................................................... 5 m (standard) up to 10 m long
Electrical Supply ............................................................................................................... 20-28 VDC, 0.1 A
Interface Inputs .................................................................. 5-30 VDC, 10 kΩ impedance, optically isolated
Interface Outputs ...................................................5-30 VDC, 100 mA max., sink/source, optically isolated
Specifications are subject to change without notice.
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7 Glossary
SINKING OUTPUTS
A sinking output will connect the output to 0V
(Ground) when it is active. An inactive sinking output
will be open of floating.
COM PORT
Communication or serial port connection
COVER GLASS
A protective window placed in the beam delivery.
The purpose is to protect lenses or other optics from
contamination or debris. When a cover glass
becomes contaminated, it can be replaced or
cleaned easily
SOURCING OUTPUTS
A sourcing output will connect the output to a
voltage (i.e. 24 VDC) when it is active. An inactive
sourcing output will be open of floating.
DC
Direct Current
I/O
Inputs(s) and Output(s)
USB PORT
Universal Serial Bus, used to connect a device to a
computer
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This page
intentionally
left blank.
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Cover Glass Monitor Operation Manual
Laser Mechanisms, Inc.
25325 Regency Drive • Novi, Michigan 48375 USA
Phone: (248) 474-9480 • Fax: (248) 474-9277
In Europe: Phone: +32(0)92 18 70 70 • Fax: +32(0)92 18 70 79
Web: www.lasermech.com • E-Mail: [email protected]