Specifications

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Publication S117-CA001A-EN-P
Presence Sensing Safety Devices
PAC Type 4 Safety Light Curtains
2-64
GuardShield Safe 4 PAC
General Principles
2-Opto-electronics
Safety Switches Operator
Interface
Logic Power
R
Description
Features
 M12 connectors
 Optically synchronized
 Integrated laser alignment system
 IP65 enclosure rating
 Simple installation
 cULus Listed and CE Marked for all applicable directives
Applications
 Palletizers
 Material handling systems
 Packaging equipment
 Robot cells
 Automated processes
Specifications
Safety Ratings
Standards
EN/IEC 61496 Parts 1 and 2, UL 61496
Parts 1 and 2, UL1998
Safety Classification
Type 4 per IEC/EN61496. Category 4
device per EN 954-1, SIL 3 per IEC 61508,
PLe per EN/ISO 13849
Certifications
cULus Listed and CE Marked for all
applicable directives
Power Supply
Input Power, Max. 24V DC ± 20%
Maximum Residual Ripple
< 10% of U
sp
Power Consumption <500 mA (no load)
Outputs
Safety Outputs 2 PNP OSSD. 0.3 A, short-circuit protected
Output Voltage, Min.
U
sp
-1
Switching Current @ Voltage,
Min.
300 mA @ 24V DC
Operating Characteristics
Indicator LEDs ON -State, OFF-State, internal error
Protected Height [mm (in.)]
3 beam = 840 mm (33.0 in.)
2 beam = 600 mm (23.6 in,)
Scanning Range 5…30 m (16.4…98.4 ft)
Synchronization Optical, first beam adjacent to LEDs
Wavelength 950 nm
Environmental
Enclosure Type Rating IP65
Relative Humidity 15…95% (noncondensing)
Operating Temperature [C (F)] 0…55° (0…131°)
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.)
Physical Characteristics
Mounting
Rear mounting, standard and adjustable
(180°)
Weight
Varies by by cat. no., see
Installation Manual
Housing Cross Section 30 x 40 mm (1.18 x 1.57 in.)
Connection Type
Transmitter: 5-pin M12 micro QD
Receiver: 5-pin M12 micro QD
Cable Length 30 m (98.4 ft) max.
ILAS Laser Class Class 2, IEC 60825-1
The Allen Bradley Guardmaster GuardShield Safe 4 PAC is an
economical two box, Type 4 safety light curtain with ON/OFF
functionality. This basic, guard-only operating mode, perimeter
access safety light curtain has an integrated laser alignment system
that simplifies the alignment of each pair of light curtains. Visible
laser beams are activated by touching the finger symbol on front
face of the light curtains. Positioning of the transmitter and receiver
laser beams to their respective targets facilitates optimal alignment
of each Safe 4 PAC pair. The integrated laser alignment system also
helps with the re-alignment of pairs if units are knocked out of
alignment during the course of the work process or when corner
mirrors are used.
The GuardShield Safe 4 PAC is offered with two 120 mm long,
30 mm resolution optic modules spaced at 500 mm and three
120 mm long, 30 mm resolution optic modules spaced at 400 mm
providing whole body detection. Designed for perimeter guarding
applications, both configurations of the Safe 4 PAC have operating
ranges from 5 to 30 meters which allows them to be used as opto-
electronic fences. The use of corner mirrors with the Safe 4 PAC
allows multiple-sided guarding in large perimeter applications. The
GuardShield Safe 4 PAC is also a low cost solution for entry or exit
guarding of a machine process when paired with the MSR42 muting
module. The MSR42 can be configured for two-sensor muting with
the Safe 4 PAC. The muting function allows material to pass through
the sensing field of the Safe 4 PAC when the muting sensors are
properly activated by the flow of material.
The GuardShield Safe 4 PAC, with an environmental rating of IP65,
is designed to be used in a variety of applications across a broad
range of industries in medium to heavy industrial environments.
Offered with shock isolator kits for shock and vibration applications,
the Safe 4 PAC is suited to medium- and heavy-duty applications.