Specifications

Presence Sensing Safety Devices
PAC Type 4 Safety Light Curtains
2-58
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Publication S117-CA001A-EN-P
GuardShield PAC
General Principles
2-Opto-electronics
Safety Switches Operator
Interface
Logic Power
R
Product Selection
PAC Safety Light Curtains—Standard
The Allen-Bradley Guardmaster GuardShield PAC safety light curtains are ordered as a pair—transmitter and receiver—and are shipped under
one Cat. No. After selecting the appropriate Cat. No. ensure that the required interfaces and accessories are ordered as well.
Protected Height [mm (in.)] Beam Spacing Number of Beams Cat. No.
520 (20.4) 500 mm (19.7 in.) 2
440L-P4A2500YD
820 (32.3) 400 mm (15.7 in.) 3
440L-P4A3400YD
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. with a "T" for a transmitter or an "R" for a receiver.
GuardShield PAC with Integrated Laser Alignment
Protected Height [mm (in.)] Beam Spacing Number of Beams Cat. No.
520 (20.4) 500 mm (19.7 in.) 2
440L-P4AL2500YD
820 (32.3) 400 mm (15.7 in.) 3
440L-P4AL3400YD
Note: The GuardShield transmitter requires a 4-pin cable and the receiver requires an 8-pin cable.
Note: GuardShields are sold in pairs. To select a transmitter or receiver, replace the "P" in the cat. no. with a "T" for a transmitter or an "R" for a receiver.
GuardShield PAC with Integrated Laser Alignment and I/O Connectivity
Protected Height [mm (in.)] Beam Spacing Number of Beams Cat. No.
520 (20.4) 500 mm (19.7 in.) 2
440L-P4AL2500YA
820 (32.3) 400 mm (15.7 in.) 3
440L-P4AL3400YA
Note: GuardShields are sold in pairs. To select a transmitter or receiver, replace the "P" in the cat. no. with an "R" for a receiver. PAC with integrated laser
alignment and I/O connectivity uses a standard transmitter. To order a transmitter, replace the "P" with a "T" and the last "A" with a "D" (example: 440L-
T2500YD).
Recommended Logic Interfaces
Description Safety Outputs Auxiliary Outputs Terminals Reset Type Power Supply Cat. Page No. Cat. No.
Single-Function Safety Relays for 2 N.C. Contact Switch
MSR127RP 3 N.O. 1 N.C.
Removable
(Screw)
Monitored Manual 24V AC/DC 5-26
440R-N23135
MSR127TP 3 N.O. 1 N.C.
Removable
(Screw)
Auto./Manual 24V AC/DC 5-26
440R-N23132
MSR126 2 N.O. None Fixed Auto./Manual 24V AC/DC 5-24
440R-N23117
Modular Safety Relays
MSR210P Base
2 N.C. only
2 N.O.
1 N.C. and 2 PNP
Solid State
Removable
Auto./Manual or
Monitored Manual
24V DC from the
base unit
5-82
440R-H23176
MSR220P Input
Module
— — Removable — 24V DC 5-86
440R-H23178
MSR310P Base
MSR300 Series
Output Modules
3 PNP Solid State Removable
Auto./Manual
Monitored Manual
24V DC 5-102
440R-W23219
MSR320P Input
Module
— 2 PNP Solid State Removable —
24V DC from the
base unit
5-106
440R-W23218
Muting Modules
MSR22LM 2 N.O. 1 N.C. Removable Auto./Manual 24V DC 5-48
440R-P23071
MSR42 (requires
optical interface to
configure
445L-AF6150
2 PNP
2 PNP,
configurable
Removable
Auto./manual or
manual monitored
24V DC 5-52
440R-P226AGS-NNR
Note: The use of a category 4 safety relay module does not improve the category rating of the safety system beyond the Category 2 rating of the Type 2 light
curtain in use.