GuardShield™ Light Curtains
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| Standard | Cascading |
Description
The Allen-Bradley Guardmaster GuardShield safety light curtain is an economical, fully featured, Type 4 safety light curtain in a uniquely styled housing. GuardShield safety light curtains are general purpose presence sensing devices designed for use on hazardous machinery providing point of operation, as well as perimeter and access guarding. This self-contained, two box, safety light curtain has DIP switch selectable operating modes and is available in both 14 mm and 30 mm resolutions.
Modes of operation such as fixed and floating blanking, beam coding, start/restart interlock, external device monitoring (EDM), machine test signal, are selected by DIP-switch settings. These DIP-switches are located beneath a security door, which are conveniently located on both the transmitter and receiver end caps.
The GuardShield’s torsionally rigid, extruded aluminium, polyurethane powder coated housing, combined with an environmental rating of IP65, allows the GuardShield to be used in guarding applications across a broad range of industries.
Features
- Fixed blanking—teachable
- Floating blanking
- One beam floating blanking on 30 mm resolution
- Two beam floating blanking on 14 mm resolution
- One beam floating blanking on 30 mm resolution
- Beam coding
- External Device Monitoring (EDM)
- Start/restart interlock
- Possible to interconnect (Cascade) up to three GuardShield segment pairs
- M12 quick-disconnect connectors
Specifications
| Safety Ratings | |
| Standards | IEC/EN 61496 Parts 1 & 2, UL 61496Parts 1 & 2, UL 1998 |
| Safety Classification | Type 4 per IEC/EN61496, Category 4 device per EN 954-1 |
| Certifications | cULus, UL 61496, UL 1998, TÜV, and CE Marked for all applicable directives |
| Power Supply | |
| Input Power, Max. | 24V DC ±20% |
| Maximum Residual Ripple | 0.05 Vss |
| Power Consumption | 0.4 A max (no load) |
| Outputs | |
| Safety Outputs | 2 OSSD, 0.5 A, short-circuit protected |
| Non-Safety Outputs | 1 OSSD, 0.5 A max. |
| Output Voltage, Min. | Uv - 2V |
| Switching Current @ Voltage, Min. | 500 mA @ 24V DC |
| Operating Characteristics | |
| Response Time | 14 mm; 160 mm…1440 mm 20 ms, 1600 mm and 1760 mm, 25 ms. 30 mm; 20 ms. Add 10 ms when beam coding activated. |
| Status Indicators | ON State, OFF State, Blanking, Alignment, Interlock |
| Protected Height [mm (in.)] | 160…1760 (6.3…69.3), in 160 (6.3) increments |
| Resolution [mm (in.)] | 14 (0.55) or 30 (1.18) |
| Scanning Range/Resolution | 0.3…7 m / 14 mm (0.98…22.9 ft / 0.55 in.) 0.3…16 m / 30 mm (0.98…52 ft / 1.18 in.) |
| Synchronization | Optical, first beam adjacent to LEDs. |
| Wavelength | 870 nm |
| Environmental | |
| Enclosure Type Rating | IP65 |
| Relative Humidity | 15…95% (noncondensing) |
| Operating Temperature [C (F)] | -10…55° (14…131°) |
| Vibration | IEC60068-2-6: Frequency 10…55 Hz; Amplitude: 0.35 mm (0.01 in.) |
| Shock | IEC60068-2-29: Acceleration 10 g, pulse duration 16 ms 10…55 Hz |
| Physical Characteristics | |
| Mounting | End-cap brackets supplied |
| Weight | Varies by protective height |
| Housing Cross Section | 40 mm x 50 mm (1.57 in. x 1.96 in.) |
| Connection Type | Transmitter: 4-pin M12 micro QD; Receiver: 8-pin M12 micro QD |
| Cable Length | 30 m (100 ft) max. |
Product Selection
1. Safety Light Curtains—Standard System
The Allen-Bradley Guardmaster GuardShield safety light curtains are ordered as pairs—transmitter and receiver—and shipped under one part number. After selecting the appropriate light curtain pair, ensure that required interfaces and accessories are ordered as well.
| Protected Height [mm (in.)] | Resolution [mm (in.)] | Number of Beams | Cat. No. | Protected Height [mm (in.)] | Resolution [mm (in.)] | Number of Beams | Cat. No. |
| 160 (6.3) | 14 (0.55) | 16 | 440L-P4J0160YD | 160 (6.3) | 30 (1.18) | 8 | 440L-P4K0160YD |
| 320 (12.6) | 14 (0.55) | 8 | 440L-P4J0320YD | 320 (12.6) | 30 (1.18) | 16 | 440L-P4K0320YD |
| 480 (18.9) | 14 (0.55) | 48 | 440L-P4J0480YD | 480 (18.9) | 30 (1.18) | 24 | 440L-P4K0480YD |
| 640 (25.2) | 14 (0.55) | 64 | 440L-P4J0640YD | 640 (25.2) | 30 (1.18) | 32 | 440L-P4K0640YD |
| 800 (31.5) | 14 (0.55) | 80 | 440L-P4J0800YD | 800 (31.5) | 30 (1.18) | 40 | 440L-P4K0800YD |
| 960 (37.8) | 14 (0.55) | 96 | 440L-P4J0960YD | 960 (37.8) | 30 (1.18) | 48 | 440L-P4K0960YD |
| 1120 (44.1) | 14 (0.55) | 112 | 440L-P4J1120YD | 1120 (44.1) | 30 (1.18) | 56 | 440L-P4K1120YD |
| 1280 (50.4) | 14 (0.55) | 128 | 440L-P4J1280YD | 1280 (50.4) | 30 (1.18) | 64 | 440L-P4K1280YD |
| 1440 (56.7) | 14 (0.55) | 144 | 440L-P4J1440YD | 1440 (56.7) | 30 (1.18) | 72 | 440L-P4K1440YD |
| 1600 (63.0) | 14 (0.55) | 160 | 440L-P4J1600YD | 1600 (63.0) | 30 (1.18) | 80 | 440L-P4K1600YD |
| 1760 (69.1) | 14 (0.55) | 176 | 440L-P4J1760YD | 1760 (69.1) | 30 (1.18) | 88 | 440L-P4K1760YD |
| Note: The GuardShield transmitter requires a 4-pin cable and the receiver requires an 8-pin cable. Note: To select a transmitter or receiver substitute the "P" in the above Cat. Nos. a "T" for transmitter and an "R" for receiver. |
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2. Cordsets—Two Required (one for transmitter and one for receiver)
| Female Connector (Sensor End) | Cable | Cat. No. | |||
| Face View of Female | Connector Style | Pin/Wire Color | Wire Rating | Length [m (ft)] | |
| Transmitter | |||||
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Straight | 1 Brown 2 White 3 Blue 4 Black |
22 AWG 300V 4 A |
2 (6.5) | 889D-F4AC-2 |
| 5 (16.4) | 889D-F4AC-5 | ||||
| 10 (32.8) | 889D-F4AC-10 | ||||
| 15 (49.2) | 889D-F4AC-15 | ||||
| 20 (65.6) | 889D-F4AC-20 | ||||
| 30 (98.4) | 889D-F4AC-30 | ||||
| Receiver | |||||
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Straight Female | 1 White 2 Brown 3 Green 4 Yellow 5 Grey 6 Pink 7 Blue 8 Red |
24 AWG 30V AC/36V DC 1.5 A |
2 (6.5) | 889D-F8AB-2 |
| 5 (16.4) | 889D-F8AB-5 | ||||
| 10 (32.8) | 889D-F8AB-10 | ||||
| 15 (49.2) | 889D-F8AB-15 | ||||
| 20 (65.6) | 889D-F8AB-20 | ||||
| 30 (98.4) | 889D-F8AB-30 | ||||
Cordsets Approximate Dimensions [mm (inches)]
Dimensions are not intended to be used for installation purposes.
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| Straight Female |
3. Safety Relay Interfaces—Optional
| Relay | Safety Outputs | Auxiliary Outputs | Terminals | Power Supply | Reset | Cat. No. |
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3 N.O. | 1 N.C. | Removable (Screw) | 24V AC/DC | Auto./Manual | 440R-N23132 |
| Monitored Manual | 440R-N23135 | |||||
| 115V AC | Auto./Manual | 440R-N23131 | ||||
| Removable (Screw) | Monitored Manual | 440R-N23134 | ||||
| 230V AC | Auto./Manual | 440R-N23130 | ||||
| MSR127 | Monitored Manual | 440R-N23133 | ||||
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2 N.O. | None | Fixed | 24V AC/DC | Auto./Manual | 440R-N23117 |
| 115V AC | 440R-N23116 | |||||
| 230V AC | 440R-N23115 | |||||
| 24V AC/DC | 440R-N23114 | |||||
| 115V AC | 440R-N23113 | |||||
| 230V AC | 440R-N23112 | |||||
| 24V AC/DC | Monitored Manual | 440R-N23123 | ||||
| 115V AC | 440R-N23122 | |||||
| 230V AC | 440R-N23121 | |||||
| 24V AC/DC | 440R-N23120 | |||||
| 115V AC | 440R-N23119 | |||||
| MSR126 | 230V AC | 440R-N23118 | ||||
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3 N.O. | 2 N.C., 2 PNP Solid State | Removable (Screw) | 24V AC/DC | Auto./Manual or Monitored Manual | 440R-C23139 |
| 115V AC | 440R-C23137 | |||||
| MSR131RTP | 230V AC | 440R-C23136 | ||||
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2 N.O. | 1 N.C. | Removable | 24V DC from the base unit | Auto./Manual or Monitored Manual | 440R-H23177 |
| MSR211¬ | ||||||
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— | — | Removable | 24V DC from the base unit | Selected on the base unit | 440R-H23179 |
| MSR221 | ||||||
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MSR300 Series Output Modules | 3 PNP Solid State | Removable | 24V DC | Auto./Manual or Monitored Manual | 440R-W23219 |
| MSR310 | ||||||
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— | 2 PNP Solid State | Removable | 24V DC from the base unit | Selected on the base unit | 440R-W23218 |
| MSR320¬ | ||||||
| ¬ Able to connect to two safety light curtains. | ||||||
4. Safety Relay Interfaces—Optional (Used for muting applications)
| Relay | Input Voltage | PSDI | Muting | Outputs | More Details | Cat. No. |
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24V DC | Yes | Yes | 2 N.O. Safety 1 N.C. Aux. |
For more MSR22LM details click here. | 440R-P23071 |
| MSR22LM | ||||||
5. Accessories—Optional
| Description | Cat. No. | |
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Steel L-shaped end cap mounting bracket (4 per package) Note: 4 brackets supplied with each GuardShield pair. |
440L-AF6101 |
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Aluminum middle mounting bracket for vibratory applications | 440L-AF6108 |
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Power supply: Output—24V DC, 3 Amps, 72 W | 1606-XLP72E |
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Laser alignment tool | 440L-ALAT |
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GuardShield laser alignment tool bracket | 440L-AF6109 |
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Mounting stand | 440L-AMSTD |
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Vertical shock mount kit | 440L-AF6120 |
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Horizontal shock mount kit | 440L-AF6121 |
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Middle vertical mount kit | 440L-AF6122 |
| Middle horizontal mount kit | 440L-AF6123 | |
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GuardShield weld shield pair | 440L-AGWS0160 |
| 440L-AGWS0320 | ||
| 440L-AGWS0480 | ||
| 440L-AGWS0640 | ||
| 440L-AGWS0800 | ||
| 440L-AGWS0960 | ||
| 440L-AGWS1120 | ||
| 440L-AGWS1280 | ||
| 440L-AGWS1440 | ||
| 440L-AGWS1600 | ||
| 440L-AGWS1760 | ||
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GuardShield Washdown Enclosure Kit Note: Not for cascaded GuardShields. |
440L-AGST320 |
| 440L-AGST480 | ||
| 440L-AGST640 | ||
| 440L-AGST800 | ||
| 440L-AGST960 | ||
6. Corner Mirror for Multi-Sided Guarding
Specially constructed glass mirrors for 2- and 3-sided safeguarding applications.
Note: Each mirror reduces maximum scan range by 10% per mirror. Each corner mirror suppled with two end-cap mounting brackets.
| GuardShield Light Curtain Cat. No. | Narrow Mirror Short-Range 0…4 m | Cat. No. | Wide Mirror Long-Range 4…15 m | Cat. No. |
| 440L-P4¬ 0160YT 440L-P2K‡ 0160YD |
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440L-AM0750300 |
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440L-AM1250300 |
| 440L-P4¬ 0320YT 440L-P2K‡ 0320YD |
440L-AM0750450 | 440L-AM1250450 | ||
| 440L-P4¬ 0480YT 440L-P2K‡ 0480YD 440L-P4A2500YD |
440L-AM0750600 | 440L-AM1250600 | ||
| 440L-P4¬ 0640YT 440L-P2K‡ 0640YD |
440L-AM0750750 | 440L-AM1250750 | ||
| 440L-P4¬ 0800YT 440L-P2K‡ 0800YD |
440L-AM0750900 | 440L-AM1250900 | ||
| 440L-P4¬ 0960YT 440L-P2K‡ 0960YD 440L-P4A3400YD |
440L-AM0751050 | 440L-AM1251050 | ||
| 440L-P4¬ 1120YT 440L-P2K‡ 1120YD |
440L-AM0751200 | 440L-AM1251200 | ||
| 440L-P4¬ 1280YT 440L-P2K‡ 1280YD |
440L-AM0751350 | 440L-AM1251350 | ||
| 440L-P4¬ 1440YT 440L-P2K‡ 1440YD |
440L-AM0751500 | 440L-AM1251500 | ||
| 440L-P4¬ 1600YT 440L-P2K‡ 1600YD |
440L-AM0751650 | 440L-AM1251650 | ||
| 440L-P4¬ 1760YT 440L-P2K‡ 1760YD |
440L-AM0751800 | 440L-AM1251800 | ||
¬ = J or K; T = D or R; ‡ = A or D
7. Cascading GuardShield Safety Light Curtains
A cascading GuardShield safety light curtain is a standard GuardShield safety light curtain with additional M12 connectors located on top of each safety light curtain. The connector on the top of the safety light curtains allow the interconnection of up to a total of three pair of GuardShield safety light curtains with a common pair of OSSDs. The ability to interconnect GuardShield pairs reduces overall system wiring and simplifies the safety circuit resulting in a lower overall cost of a multiple safety light curtain system. This product configurability also allows a GuardShield safety light curtain system to protect multiple sides of a machine or simply adds flexibility when positioning GuardShield in various applications.
The complete cascading GuardShield system has the full functionality of a standard GuardShield (beam coding, EDM, start/restart interlock, fixed and floating blanking). There are a couple of operating modes which can not be configured in the middle and end segments (EDM and Start / Restart Interlock) and must only be configured in the Host (first) pair. The system will still have these operating modes active if configured in the host or first GuardShield pair. This host or first pair is the pair of cascading GuardShield light curtains, which have the output cordsets connected and wired to the safety relay, safety PLC or FSDs. Configuring of the EDM operating mode in the end and middle segments will cause the system to go to a lock-out condition after the first interruption of the sensing field. Configuration of the start/restart interlock operating mode in the end and middle segments will cause the system to stay in a red condition awaiting reset after the interruption of the sensing field.
The cascading GuardShield safety light curtains are ordered as pairs (transmitter and receiver) and are shipped under one cat. No. After selecting the appropriate pair of cat. nos. for a cascading GuardShield system, select the interconnecting transmitter and receiver patchcord cat. nos. to connect the GuardShield pairs. The transmitter patchcord is a 4-pin M12 patchcord offered in lengths of
1/3 meter, 1 meter and 2 meters. The receiver patchcord is an 8-pin M12 patchcord offered in lengths of 1/3 meter, 1 meter and 2 meters.
If the end pair of a cascading system is a cascading pair of GuardShield light curtains, it is necessary to attach a termination adaptor to the top M12 connector located on the receiver. Be sure to order all other required interfaces and accessories.
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The upper and lower limit of the protective field is shown by markings on the housings.
The width of the protective field is derived from the length of the light path between sender and receiver and must not exceed the maximum rated width of the protective field (7 m…14 mm (22.9 ft…0.55 in.), 18 m…30 mm (59.0 ft…1.18 in.)).
Cascading segments are offered in protective heights from 320…1760 mm in both 14 mm and 30 mm resolutions. Cascading segments of 160 mm are not offered, however, a 160 mm GuardShield can be used as the last segment in a cascading system.
A maximum of three GuardShield light curtains can be interconnected with a common pair of OSSDs. The maximum number of beams allowed in a cascading system is 528 beams,
which equates to three 1760 mm cascading GuardShields in 14 mm resolution. The individual segments can have mixed resolutions, i.e., 14 mm and 30 mm as long as the pairs have the same protective heights and resolutions.
Cascading segments can be used as standalone light curtain pairs or can have up to three segments interconnected. These cascading segments all function as independent light curtains.
Note: When cascading segments are used as standalone pairs or as the last segment in a cascading system, it is necessary to use a termination plug on the top connector of the GuardShield cascading receiver. It is also possible to use a standard GuardShield Type 4 POC pair as the last segment in a cascading system.
GuardShield Cascading Cat. Nos.
| Protected Height [mm (in.)] | Resolution [mm (in.)] | Number of Beams | Pair Weight [kg (lbs)] | Cat. No. | ||
| Sensor Pair | Transmitter | Receiver | ||||
| 320 (12.59) | 14 (0.55) | 32 | 0.9 (1.9) | 440L-C4J0320YD | 440L-G4J0320YD | 440L-F4J0320YD |
| 480 (18089) | 14 (0.55) | 48 | 1.1 (2.4) | 440L-C4J0480YD | 440L-G4J0480YD | 440L-F4J0480YD |
| 640 (25.19) | 14 (0.55) | 64 | 1.6 (3.5) | 440L-C4J0640YD | 440L-G4J0640YD | 440L-F4J0640YD |
| 800 (31.49) | 14 (0.55) | 80 | 2.0 (4.4) | 440L-C4J0800YD | 440L-G4J0800YD | 440L-F4J0800YD |
| 960 (37.79) | 14 (0.55) | 96 | 2.5 (5.5) | 440L-C4J0960YD | 440L-G4J0960YD | 440L-F4J0960YD |
| 1120 (44.09) | 14 (0.55) | 112 | 2.9 (6.4) | 440L-C4J1120YD | 440L-G4J1120YD | 440L-F4J1120YD |
| 1280 (50.39) | 14 (0.55) | 128 | 3.4 (7.5) | 440L-C4J1280YD | 440L-G4J1280YD | 440L-F4J1280YD |
| 1440 (56.69) | 14 (0.55) | 144 | 3.8 (8.4) | 440L-C4J1440YD | 440L-G4J1440YD | 440L-F4J1440YD |
| 1660 (62.99) | 14 (0.55) | 160 | 4.3 (9.5) | 440L-C4J1600YD | 440L-G4J1600YD | 440L-F4J1600YD |
| 1760 (69.29) | 14 (0.55) | 176 | 4.7 (10.4) | 440L-C4J1760YD | 440L-G4J1760YD | 440L-F4J1760YD |
| 320 (12.59) | 30 (1.18) | 16 | 0.9 (1.9) | 440L-C4K0320YD | 440L-G4K0320YD | 440L-F4K0320YD |
| 480 (18.89) | 30 (1.18) | 24 | 1.1 (2.4) | 440L-C4K0480YD | 440L-G4K0480YD | 440L-F4K0480YD |
| 640 (25.19) | 30 (1.18) | 32 | 1.6 (3.5) | 440L-C4K0640YD | 440L-G4K0640YD | 440L-F4K0640YD |
| 800 (31.49) | 30 (1.18) | 40 | 2.0 (4.4) | 440L-C4K0800YD | 440L-G4K0800YD | 440L-F4K0800YD |
| 960 (37.79) | 30 (1.18) | 48 | 2.5 (5.5) | 440L-C4K0960YD | 440L-G4K0960YD | 440L-F4K0960YD |
| 1120 (44.09) | 30 (1.18) | 56 | 2.9 (6.4) | 440L-C4K1120YD | 440L-G4K1120YD | 440L-F4K1120YD |
| 1280 (50.39) | 30 (1.18) | 64 | 3.4 (7.5) | 440L-C4K1280YD | 440L-G4K1280YD | 440L-F4K1280YD |
| 1440 (56.69) | 30 (1.18) | 72 | 3.8 (8.4) | 440L-C4K1440YD | 440L-G4K1440YD | 440L-F4K1440YD |
| 1600 (62.99) | 30 (1.18) | 80 | 4.3 (9.5) | 440L-C4K1600YD | 440L-G4K1600YD | 440L-F4K1600YD |
| 1760 (69.29) | 30 (1.18) | 88 | 4.7 (10.4) | 440L-C4K1760YD | 440L-G4K1760YD | 440L-F4K1760YD |
8. Patchcords/Connectors
The GuardShield transmitter host patchcord has 4-pin DC micro over-molded quick-disconnect connectors offered in lengths of 1/3 meter, 1 meter and 2 meters. The GuardShield receiver host
patchcord has 8-pin DC micro over-molded quick-disconnect connectors offered in lengths of 1/3 meter, 1 meter and 2 meters.
| Face View of Female | Description | Cat. No. |
| Transmitter Patchcord | ||
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4-pin M12 patchcord, 12 inches | 889D-F4ACDM-0M3 |
| 4-pin M12 patchcord, 1 meter | 889D-F4ACDM-1 | |
| 4-pin M12 patchcord, 2 meter | 889D-F4ACDM-2 | |
| Receiver Patchcord | ||
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8-pin M12 patchcord, 12 inches | 889D-F8ABDM-0M3 |
| 8-pin M12 patchcord, 1 meter | 889D-F8ABDM-1 | |
| 8-pin M12 patchcord, 2 meter | 889D-F8ABDM-2 | |
| Face View of Female | Description | Cat. No. |
| Receiver | ||
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Termination plug 8-pin M12 quick disconnect | 898D-81CU-DM |
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| Example of Patchcord |
Approximate Dimensions
Dimensions are shown in mm (in.). Dimensions are not intended to be used for installation purposes.
Safety Light Curtain
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Note: Middle mounting bracket should be used in vibration applications on GuardShield light curtain protective heights of 1120 mm and larger.
| Cat. No. | A Protective Height—mm |
B Mounting Value—mm |
C Total Length—mm |
| 440L-¬ 4‡ 0160YD | 160 ±0.5 | 276 | 312 ±1.5 |
| 440L-T 4‡ 0320YD | 320 ±0.5 (12.6 ±0.02) | 436 | 472 ±1.5 |
| 440L-T 4‡ 0480YD | 480 ±0.5 | 596 | 632 ±1.5 |
| 440L-T 4‡ 0640YD | 640 ±0.5 | 756 | 792 ±1.5 |
| 440L-T 4‡ 0800YD | 800 ±0.6 | 916 | 952 ±1.5 |
| 440L-T 4‡ 0960YD | 960 ±0.6 | 1076 | 1112 ±1.5 |
| 440L-T 4‡ 1120YD | 1120 ±0.6 | 1236 | 1272 ±1.8 |
| 440L-T 4‡ 1280YD | 1280 ±0.7 | 1396 | 1432 ±1.8 |
| 440L-T 4‡ 1440YD | 1440 ±0.7 | 1556 | 1592 ±1.8 |
| 440L-T 4‡ 1600YD | 1600 ±0.8 | 1716 | 1752 ±2.0 |
| 440L-T 4‡ 1760YD | 1760 ±0.8 | 1876 | 1912 ±2.0 |
| ¬ P = Pair, T = Transmitter, R = Receiver T P = Pair, T = Transmitter, R = Receiver, C = Host Pair, G = Host Transmitter, F = Host Receiver ‡ J = 14 mm resolution or K = 30 mm resolution Note: 160 mm is not available for cascading GuardShield light curtains. |
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Wiring Diagram for Connection of OSSDs Directly to Contactors (FSDs)
Wiring diagram is not intended to be used for installation purposes.
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¬ Auxiliary output is nonsafety. Can be connected to a lamp, motor or status to a PLC.
| K1, K2 | Safety relay or safety contactor for OSSD 1 and OSSD 2 connection | |
| S1 | Switch for external system test (optional) | |
| S2 | Switch for reset of light curtain from start/restart interlock |
Wiring Diagram for Connection of OSSDs Directly to a Safety Relay Module
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