Presence Sensing Safety Devices
Safety Light Curtains
GuardShield Type 4
Specifications
Standards
Approvals
EN 61496 Parts 1 & 2
TUV and CE marked for all applicable
directives; UL 61496, UL 1998
Protected Height
160mm...1760mm (6.3in...69.3in) in
160mm (6.3in) increments
Scanning Range/Resolution
0.3-7m/14mm (0.98-22.9ft/0.55in)
0.3m-18m/30mm (0.98-59ft/1.18in)
Resolution
14mm/30mm (0.55in/1.18in)
IP 65
Enclosure Rating
Connection Type
Transmitter: 4-pin micro QD
Receiver: 8-pin micro QD
Supply Voltage Uv
Maximum Residual Ripple
24V DC ± 20%
5 Vss
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 are available in both
14mm and 30mm resolutions.
Power Consumption
0.9...2 Amps (no-load) 0.4A max (no
load)
Synchronization
Optical, without separate
synchronization channel
Outputs—Safety
Output—Non safety
Minimum Output Voltage
Response Time
2 x PNP, 0.5 A, short circuit protected
1 x PNP 0.5A max.
Uv - 2V
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-switches settings. These dip-
switches are located beneath a security door, which are conveniently
located on both the transmitter and receiver end caps.
Depending on number of beams
Short circuit and overload
30m (100ft) max.
Protection
Cable Length
Mode of Operation
Safety Category
Manual or automatic restart
Type 4 (self-checking) per EN 61496
-10°C to 55°C (14°F to 131°F)
15%...95% (not condensing)
-25°C to 75°C (-13°F to 167°F)
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.
Operating Ambient Temp.
Air Humidity
Storage Temperature
Approximate Dimensions
Height
Housing Cross Section
Length dependent upon protected
height; (see dimensional drawings)
40 mm x 50 mm (1.57in x 1.96in)
Features
•
•
•
•
•
Fixed blanking—teachable
Floating blanking—one or two beam
Beam coding
External Device Monitoring (EDM)
Start/restart interlock
Transmitter Wavelength
Vibration Resistance
870nm
IEC60068-2-6, frequency 10Hz to 55Hz
Amplitude: 0.35mm (0.01in)
Shock
IEC60068-2-29 acceleration 10g, pulse
duration 16ms
Note: The external power supply must be capable of buffering brief
power failures of 20ms as specified in IEC 60204.
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