Rockwell Automation Allen-Bradley GuardShield Micro 400 User manual

Product Information
Original Instructions
GuardShield Micro 400 Safety Light Curtains
Catalog Numbers 445L-P4xFP, 445L-C4xFP, 445L-P4xKP
Only use the GuardShield Micro 400 safety light curtain as defined in these
instructions and publications that are listed in Additional Resources on page 6.
Only qualified personnel can install, commission, service, and use this safety light
curtain, and only on the machine that the device was intended.
If the device is used for any other purposes or modified in any way, warranty
claims against Allen-Bradley/Guardmaster become null and void.
The national/international rules and regulations apply to the installation, use, and
periodic technical inspections of the safety light curtain, in particular:
• Machinery Directive 2006/42/EC
• Low Voltage Directive 2014/35/EU
• Use of Work Directive 2009/104/EC
• The work safety regulations/safety rules
• Other relevant health and safety regulations
Manufacturers and users of the machine that uses the safety light curtain are
responsible for obtaining and observing all applicable safety regulations and rules.
Specifications
ATTENTION:
• Do not use the GuardShield™ Micro 400 safety light curtain with
machines that cannot stop electrically in an emergency.
• Always maintain the safety distance between the GuardShield
Micro 400 safety light curtain and a dangerous machine
movement.
• Install additional mechanical protective devices so you cannot
reach the hazardous machine elements without passing
through the protective field.
• Install the GuardShield Micro 400 safety light curtain so you can
only access the hazard through the sensing field.
• Improper installation can result in serious injury.
• Never connect the outputs to +24V DC. If the outputs connect to
+24V DC, they are in the on-state and cannot stop hazardous
spots at the machine/application.
• Never expose the GuardShield Micro 400 safety light curtain to
flammable or explosive gases.
• Regular safety inspections are imperative (see
Inspection on page 4).
IMPORTANT Observe the following items to maintain the proper and
safe use of the GuardShield Micro 400 safety light curtain.
Table 1 - Safety Ratings
Attribute Standard IP69K
Standards IEC/EN 61496 Parts 1 and 2, UL61496 Parts 1 and 2, UL1998
Safety classification Type 4 per IEC/EN61496. Category 4 device per EN 13849-1 SIL 3 per
IEC 61508, PLe per EN/ISO 13849-1
Probability of a dangerous
failure per hour PFH • 6.0 E-9 1/h MSR42 or MSR41 safety module, and MSR45E extension module • 4.0 E-9 1/h Micro 400 safety light curtain
Certifications cULus Listed, TÜV Certified, CE Marked for all applicable EU directives, UKCA Marked for all applicable regulations, and RCM Marked (Australia)
rok.auto/certifications
Table 2 - Outputs
Attribute Standard IP69K
Micro 400 safety light
curtain outputs Data output to controller (MSR41 or MSR42 safety module)
MSR41/MSR42 safety
module outputs Two 400 mA OSSD
Non-safety outputs Auxiliary outputs from MSR41 or MSR42 safety module
2 configurable 100 mA, outputs
Switching current at
voltage, max 400 mA at 24V DC
Table 3 - Operating Characteristics
Attribute Standard IP69K
Response time
• 14 mm (0.55 in.): 12…42 ms, varies by protective height and resolution,
protective height 150…1200 mm (5.95…47.24 in.)
• 30 mm (1.18 in.); 11…23 ms, varies by protective height and resolution,
protective height 150…1200 mm (5.95…47.24 in.)
Status indicators On-state, Off-state, Intensity, Lockout
Protected height [mm
(in.)] • Standard slim profile: 50…1200 (1.97…47.2) in 50 (1.97) increments • Reinforced profile: Up to 2200 (86.6)
Resolution [mm (in.)] 14 (0.55), 30 (1.18), or PAC (perimeter)
Scanning range/
resolution, min
• 14 mm (0.55 in.) resolution:
0…5 m (16.4 ft)
• 30 mm (1.18 in.) resolution:
0…5 m (16.4 ft)
• 14 mm (0.55 in.) resolution:
0…2.5 m (0…8.2 ft)
•30mm(1.18in.)resolution:
0…2.5 m (0…8.2 ft)
Synchronization Electrical through MSR41 or MSR42 safety module
Wave length 940 nm
Time for self-check when
switching on Usp < 5 s
Table 4 - Environmental
Attribute Standard IP69K
Enclosure type rating • Micro 400 safety light curtain: IP54
•Plug:IP65
• Micro 400 safety light curtain:
IP65, IP66, IP67, IP68, IP69K
Relative humidity 15…95% (noncondensing)
Operating temperature
[°C (°F)] 0…55 (14…131)
Storage temperature
[°C (°F)] -20…+70 (4…158)
Vibration IEC 60068-2-6; Frequency 10…55 Hz; Amplitude 0.35 mm (0.01 in.)
Shock IEC 60068-2-29; Acceleration 10 g, pulse duration 16 ms 10…55 Hz;
Amplitude 0.35 mm (0.01 in.)
Power supply Input power from MSR41 or MSR42 safety module
Input power, max 24V DC ±15% (MSR41 or MSR42 safety module)
Maximum residual ripple 5% of Vss
Power consumption, max
(no load) 0.07 A
Equipment class III (VDE 0106 part 100)
EMC IEC 61496 part 1

2Rockwell Automation Publication 445L-PC001A-EN-P - May 2023
GuardShield Micro 400 Safety Light Curtains Product Information
Status Indicators
A red and a green status indicator are integrated in the end-cap connection
module of each profile (near the cable), which clearly signals the status of the
protective field. Thestatusindicatordisplayindicatessystemconditionsand faults of
the GuardShield Micro 400 safety light curtain systems.
Figure 1 - Status Indicators
See publications 440R-UM006 and 440R-UM008 for the conditions that the status
indicators signal from the status outputs of the connected MSR41 or MSR42 safety
module.
Installation
Select a rigid and flat base that is isolated against shock and vibration to mount
the GuardShield Micro 400 safety light curtain.
Determine if the machinery on which the GuardShield Micro 400 safety light curtain
is to be mounted meets the requirements in Specifications on page 1. For example,
machinery must be able to stop anywhere in its stroke or cycle, consistently and
repeatedly.
Figure 2 - Correct Installation
Figure 3 - Incorrect Installation
The GuardShield Micro 400 safety light curtain must mount at the proper Safety
Distance. See publication 445L-IN005 to calculate this distance.
Alignment
Mount the transmitter and receiver with the brackets (see Figure 5 on page 3). Confirm
that the longitudinal axes of both orient parallel to each other. Use a vertical or horizontal
mountinglevel to find the correct position.
Confirm that the receiver and transmitter orient in the same direction; both
connection ends must be at the same end of the protective field and the status
indicators are opposite one another. Do not mount the GuardShield Micro 400 safety
light curtain systems that are rotated at 180° (see Figure 4 on page 3).
Connect the transmitter and receiver to the controller and power up. Align
according to Multiple Safety Light Curtains on page 3. The status indicators aid in
alignment.
After you align the longitudinal axis of the transmitter and receiver, rotate the
receiver along the longitudinal axis to find the receiving angle. During rotation, the
green status indicator shows a free protective field. If the green status indicator
flashes, the amount of light is not sufficient for stable operation. After you realign the
safety light curtain, briefly interrupt the protective field. After you remove the object
from the protective field, the green statusindicatorshows a sufficient intensity level.
Adjust and mount the receiver at the center of this operating angle.
Table 5 - Physical Characteristics
Attribute Standard IP69K
Number of beams, max 255
Standard mounting 180° adjustable mounting brackets supplied (two sets 445L-AF6143)
Weight Varies by protective height
Housing cross section
[mm (in.)] • Slim profile (standard): 15 x 20 (0.59 x 0.79) • Reinforced profile (special): 30 x 40 (1.18 x 1.57)
Material • Optical window: Polycarbonate
• Enclosure: Aluminum, polyester powder coated, silicon free
Connection type Transmitter/receiver: 8-pin M12 micro QD
Cable length 1 m, 2 m, 3 m, 5 m, and 8 m (3.3 ft, 6.6 ft, 9.8 ft, 16.4 ft, and 26.2 ft) cable M12 to RJ45 for MSR41 or MSR42 safety module.
Max total system length cannot exceed 10 m (32.8 ft).
Patchcords (1)
(1) Special patchcords are necessary to replace older safety light curtain connector versions.
1 m, 3 m, and 5 m (3.3 ft, 9.8 ft, and 16.4 ft) M12 to M12 patchcords.
Total system length cannot exceed 10 m (32.8 ft) including protective height
of Micro 400 safety light curtain, integrated cables, and patchcords from
M12 connector to MSR41 or MSR42 safety module.
Table 6 - Status Indicator Meanings
Status Indicator Color Meaning
Green On Protective field is free
Flashing Intensity is inadequate
Red
Off Protective field is free
On Protective field is interrupted
Flashing Error (lock out condition)
IMPORTANT Install the GuardShield Micro 400 safety light curtain so
access to the hazard is only possible through the sensing
field of the GuardShield (see Figure 2). Installation of the
GuardShield Micro 400 safety light curtain can require
auxiliary safeguarding to meet this requirement.
You cannot reach hazardous machine parts
without passing through the protective field.
You cannot step between the protective field and
hazardous machine parts (bypass prevention).
You can reach hazardous machine parts without
passing through the protective field.
You can step between the protective field and
hazardous machine parts.

Rockwell Automation Publication 445L-PC001A-EN-P - May 2023 3
GuardShield Micro 400 Safety Light Curtains Product Information
After you align the receiver, rotate the transmitter to find the transmitting angle.
During rotation, the green status indicator shows the transmitting angle of the
GuardShield Micro 400 safety light curtain.
Adjust and mount the transmitter at the center of this operating angle.
Use a test rod to test the protective function of the GuardShield Micro 400 safety light
curtain, according to Figure 6 on page 5. The insertion of this rod into the protective
field at any position must interrupt the protective field (the red status indicator on
the GuardShield Micro400 illuminates).
Cycle power to confirm that the system powers up and goes to the on state.
Figure 4 - Layout of the Transmitter/Receiver
Multiple Safety Light Curtains
When two or more GuardShield Micro 400 safety light curtains mount close to one
another, the receiver of one GuardShield Micro 400 safety light curtain pair can
receive infrared light from the transmitter of another pair.
To help prevent or reduce the possibility of optical interference from safety light
curtains that mount in the same plane, alternate the transmitter and receiver pairs
so that the receiver from a second pair is facing away from the transmitter of
another safety light curtain pair nearby. You can place a physical barrier between
pairs to help prevent the infrared light from reaching another safety light curtain
pair.
Figure 5 - Alignment Options
Cascading Systems
Align the cascading segments in a particular order:
1. Connect the last segment (the segment with one connector) closest to the
control unit.
2. Once the status indicator on the edge is green, secure the mounting
brackets of that pair.
3. Connect the middle segment to the last segment and connect to the
controller.
4. When the status indicator of the middle segment receiver is green, secure
those brackets.
5. Connect the closest segment to the other segments and connect all
together to the controller.
Only the diagnosis status indicator of the first segment displays the protective
field status. The status indicators of other segments stay off.
The optical interface module (see publication 445L-IN005) can aid in the alignment
of a cascaded system.
Micro 400 Safety Light Curtain IP69K
The Micro 400 safety light curtain IP69K is supplied with two mounting brackets
that attach to the connection and end module of the tube. Do not rotate the end or
connection cap (danger of bending the safety light curtain).
The connection plug must mount away from high-pressure water.
Mounting Brackets
The GuardShield Micro 400 safety light curtain mounts using brackets, which
attach to the side of both transmitter and receiver. Use additional brackets, if
necessary, to mount the GuardShield Micro 400 safety light curtain at a proper
safety distance from the machinery hazard. The backside of the safety light curtain
profile has continuous grooves to fix the mounting brackets at any position along the
safety light curtain housing.
Additional brackets are available to mount on the side or in the center. See
publication 445L-IN005.
Wiring
Connect a GuardShield Micro 400 safety light curtain to a machine controller with
an MSR41 or MSR42 series safety module. Only use a prefabricated cable (catalog
number 445L-AC8xxx) provided by Rockwell Automation between the safety light
curtain and the controller (see publication 445L-IN005).
The Micro 400 safety light curtain requires two patchcords, one for the transmitter
and one for the receiver. Use the M12 8-pin connector to connect the safety light
curtain, while the RJ45 connector plugs to the controller. Use the M12 to M12
patchcords to extend the cable, especially between cascades of the Micro 400
safety light curtain.
The connection cables are offered with color coded rings that attach to each cable.
Remove one color ring from the cable as necessary.
• White – Transmitter (Tx)
• Blue – Receiver (Rx)
Power supply, inputs, safety outputs, and status outputs connect to the terminal
block of the MSR41, MSR42 safety module, or a MSR45E extension module (see
publication 445L-IN005).
Transmitter
Receiver
Transmitter
Receiver
Incorrect
Correct
Incorrect
Correct
Transmitter Transmitter
Receiver Receiver
Transmitters emit in opposite
directions. Each receiver receives
only the beams of the appropriate
transmitter.
Transmitters emit in the same
direction: An optical (physical)
barrier is necessary.
Positioning of the safety light
curtain: Transmitters emit in
opposite directions.
IMPORTANT In a cascading system, only the status indicators of the
segment closest to the controller function. Status
indicators of other segments do not function.
IMPORTANT Do not rotate the end or connection cap as there is a
danger of bending the safety light curtain.
Do not mount brackets on the transparent tube. Excessive
force can damage the tube.

4Rockwell Automation Publication 445L-PC001A-EN-P - May 2023
GuardShield Micro 400 Safety Light Curtains Product Information
The interface of the safety light curtain with the machine control must be control
reliable. For example, a correct interface with a safety PLC or safety relays with
positive guided relay contacts.
For circuit diagrams, see publication 445L-IN005.
Initiate the Unit
The transmitter and receiver units must connect to an MSR41 or MSR42 safety module.
Then the supply voltage can connect to the controlunit. After power-up, there is an
automatic self-test (duration < 5 s) of all system components.
If the protective field is free and the transmitter and receiver correctly align, the
green status indicators on the GuardShield Micro 400 safety light curtains
illuminate.
If after a successful power-up the safety light curtain detects an interruption of
the protection field, the red status indicators on the GuardShield Micro 400 safety
light curtains illuminate.
Confirm the following before the initiation or a changed machine setting (for
example, a rewiring) of the GuardShield Micro 400 safety light curtain.
1. The power supply is a 24V DC device that must comply with all applicable
standards of the Machinery Directive 2006/42/EC, and the product
standard (IEC61496), for example 1606-XLP series. No connection to a
conventional power supply.
2. Proper polarity of the power supply at the controller of the GuardShield
Micro 400 safety light curtain.
3. The transmitter connection cable properly connects to the transmitter, the
receiver connection cable properly connects to the receiver. All plugs are
connected.
4. The OSSD outputs do not connect to +24V DC.
5. The connected switching elements (load) do not connect to 24V DC.
6. If two or more GuardShield Micro 400 safety light curtains are in use,
confirm that each system is properly installed to avoid optical
interference.
Switch on the GuardShield Micro 400 safety light curtain. The system is functional
if the protection field is free of obstructions and after 2 seconds after startup, the
system starts to work properly.
Troubleshooting
• Steady red status indicator:
- Check the alignment of the status indicator of the GuardShield Micro
400 safety light curtain. Use the 445L-AF6150 optical interface to
display the individual beam status on a laptop with a USB interface.
• Red status indicator flashes (lockout condition):
- Inadequate supply voltage to the MSR41 or MSR42 safety module.
- Transmitter and/or receiver cables do not correctly plug into the MSR41
or MSR42 safety module.
- Transmitter and receiver safety light curtains connect to the incorrect
locationsin thecontroller (transmitter plugged into receiver
connection).
- Incorrect assembly of cascaded systems (transmitter and receiver
mixed).
- Cable connector makes poor contact.
- Error in the EDM feedback channel at the safety control (only if EDM).
- Short circuit at the OSSD outputs.
- Foreign light source affects the receiving unit.
- Blanking configured and wrong safety light curtain length or resolution
connected (only if blanking).
To correct:
• Examine connections, cables, and plugs of transmitter and receiver.
• Turn the supply voltage off and on again.
• Use the optical interface to display the lockout information on a laptop
with a USB interface.
• If the status indicator of the safety light curtain still flashes red, contact
Rockwell Automation technical support.
Inspection
Specialist personnel or specially qualified and authorized personnel must conduct,
record, and document the tests so the tests can be reconstructed and retraced at
any time.
Only conduct an inspection if you clearly understand the functioning of the
GuardShield Micro 400 safety light curtain, and of the machine, and you have
sufficient information available to conduct the inspection.
For the inspection, confirm:
• Approach to hazardous machine parts must only be possible through the
protective field of the GuardShield Micro 400 safety light curtain.
• Operators cannot step through the sensing area while working on
dangerous machine parts.
• The safety distance of the application is bigger than the calculated value.
• The optic front cover is not scratched or dirty.
IMPORTANT The safety devices and the interconnection to the
machinery must comply with the basic safety requirements
as mentioned in the current regulations and standards.
Direct interface of a safety light curtain to a machine
control that does not meet the necessary safety integrity
level, can result in injury to personnel. For instance, the use
of general-purpose PLCs or relays can cause injury to
personnel.
IMPORTANT In cascaded systems, only the status indicator in the first
safety light curtain illuminates (closest to the safety
controller).
ATTENTION: Never operate the GuardShield Micro 400 safety
light curtain before you conduct the following inspection.
Improper inspection can lead to operator injury.

Rockwell Automation Publication 445L-PC001A-EN-P - May 2023 5
GuardShield Micro 400 Safety Light Curtains Product Information
Operate the machine and check if the hazardous movement stops under the
following circumstances.
• The protective field is interrupted.
• Hazardous machine movement stops immediately when the test interrupts
the protective field:
- Directly in front of the transmitter
- Directly in front of the receiver
- In the middle between transmitter and receiver
• No hazardous machine movement while the test rod is anywhere within
the protective field.
• If the blanking function is active, check all sections of the protective field
with the appropriate test piece.
Figure 6 - Test the Protective Field with a Test Rod
For the detailed inspection, confirm:
• The machine stops or does not obstruct any safety function.
• The latest machine or connection modifications have no effect on the
control system.
• The outputs of the controller of the GuardShield Micro 400 safety light
curtain properly connect to the machine.
• The total response time of the machine is shorter than the calculated
value.
• Cables and plugs of the GuardShield Micro 400 safety light curtain are in
good condition.
• Mounting brackets, caps and cables are properly secured.
Approximate Dimensions
Figure 7 - RJ45 Plug/M12 8-pin Socket (Shielded Cable) [mm (in.)] (a)
Figure 8 - M12 Plug/M12 8-pin Socket (Shielded Cable) Extension Patchcord
[mm (in.)] (b)
Figure 9 - GuardShield Micro 400 Safety Light Curtain, Standard, [mm (in.)]
(1) See publication 445L-IN005 for protection height.
Figure 10 - GuardShield Micro 400 Safety Light Curtain IP69K [mm (in.)]
(1) See publication 445L-IN005 for protection height.
IMPORTANT If any of the previously listed conditions do not stop the
hazardous motion of the machine, do not allow the machine
to operate.
(a) Use to connect from the MSR41 or MSR42 safety module to the safety light curtain
(b) Extension connection cable or use between safety light curtain cascades.
Transmitter
Transmitter
Receiver
Ferrite
Ø6.3 (0.25)
17 (0.67)
150
(5.91)
Cable
32.5
(1.28)
Cable
Ferrite
Length, 1 or 3 m (3.28 or 9.8 ft); tolerance 0/+50 mm
Ø17
(0.67)
15 (0.59)
Dia.
50.2
(1.98) 32.2
(1.27) 80 (3.15) 51.3 (2.02)
Length 1 m or 3 m (3.28 ft or 9.8 ft); tolerance 0/+50 mm (1.97 in.)
A - protection length according to table
A
15.5
(0.61)
51.3
(2.02)
455
(17.91)
27.8
(1.09)
19.8
(0.78)
1.5
(0.06)
(1)
Ø28.4 (1.12)
18 (0.7)
34
(1.34)
468 +50
(18.42) 0 A
+ 111.55 (4.39)
A
+ 90 (3.54)
38.5
(1.51)
15
(
0.59)
58
(2.28)
B
32.5
(1.28)
50.55
(1.99)
(1)
(1)
(1)

Publication 445L-PC001A-EN-P - May 2023 | -
Copyright © 2023 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
Allen-Bradley, expanding human possibility, Guardmaster, GuardShield, and Rockwell Automation are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
*PN-107934*
PN-107934
PN-107934
10000167493 Ver 06
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Waste Electrical and Electronic Equipment (WEEE)
Rockwell Automation maintains current product environmental compliance information on its website at rok.auto/pec.
At the end of life, this equipment should be collected separately from any unsorted municipal waste.
Figure 11 - GuardShield Micro 400 Safety Light Curtain, Cascaded [mm (in.)]
(1) See publication 445L-IN005 for protection height.
Declaration of Conformity
CE Conformity
Rockwell Automation declares that the products that are shown in this document
conform with the 2014/30/EU Electromagnetic Compatibility Directive (EMC) and
2006/42/EC Machinery Directive (MD) and that the respective standards and/or
technical specifications have been applied.
For a comprehensive CE certificate visit: rok.auto/certifications.
UKCA Conformity
Rockwell Automation declares that the products that are shown in this document
are in compliance with 2016 No. 1091 Electromagnetic Compatibility Regulations
and 2008 No. 1597 Supply of Machinery (Safety) Regulations and that the respective
standards and/or technical specifications have been applied.
For a comprehensive UKCA certificate visit: rok.auto/certifications.
Additional Resources
You can view or download publications at rok.auto/literature.
51.3
(2.02)
455
(17.91)
50
(1.97)
32.5
(1.28)
14.2
(0.56)
27.8
(1.09)
15.5
(0.61)
15.5
(0.61)
27.8
(1.09)
51.3
(2.02)
455
(17.91)
A - protection length according to table
19.8
(0.78)
15
(0.59)
A
(1)
Resource Description
GuardShield Micro 400 Safety Light
Curtains Installation Instructions,
publication 445L-IN005
Provides operation and installation
instructions for GuardShield Micro 400 Safety
Light Curtain POC and PAC, PAC IP69K systems,
and special configurations.
Product Certifications website,
rok.auto/certifications Provides declarations of conformity,
certificates, and other certification details.