442L-SSFZN Datasheet, PDF (1/4 Pages) Allen-Bradley – Safety Laser Scanner

Presence Sensing Safety Devices
Safety Laser Scanner
SafeZone
Description
The SafeZone Safety Laser Scanner is an optoelectronic device that
uses the diffuse reflection of emitted infrared light to determine the
intrusion of a person or object within a defined area. A rotating
deflection unit periodically emits Class 1 infrared laser light pulses
over a 300° angular range to create a detection zone which is two
dimensional. The reflected light is processed by the SafeZone, which
will send a stop signal by switching the state of its safety relay
outputs, if it is determined that a person or object is within the
predefined detection zone.
Two zones can be created within the maximum scanning range of
the SafeZone through the use of the SafeZone’s Windows based
software. The “Safety Zone” is configurable for a 6m (19.7ft) radius
and the “Warning Zone” up to a 7.5m (24.6ft) radius.
The SafeZone can be used in stationary applications for horizontal
detection in a defined protection zone, in vertical applications for
whole body access detection, and on mobile safeguarding
applications—AGVs (Automated Guided Vehicles).
The maximum value of the machine’s stopping time plus the
SafeZone’s response time must be calculated so that no person can
gain access to a hazard point before the dangerous motion has
ceased.
Features
• 300° scanning angle
• Two programmable zones (Safety/Warning)
• Safety relay outputs
• Robust IP65 housing
Specifications
Standards
IEC61496
Safety Category
Type 3 ESPE acc. to EN 61496-1
Approvals
CE marked for all applicable directives,
cULus,
Laser Protection Class
IEC 60825 Laser Class 1 (eye safe)
Measurement & Toler. Range 0 to 7.5m (0 to 24.6ft)
Range for a Safe Detection
of Objects the “Nominal
Leg”
0 to 6m (0 to 19.6ft)
(includes safety supplement)
Protective Field Res. Time 280ms
Maximum Angle
300°
Wavelength
905nm
Pulse Frequency
5.76KHz + 5%
Scanning Frequency
8Hz + 5%
Scanning Angle
300°
Resolution
70mm (2.8in) at 6m (19.6ft)
Point Resolution
0.5°
Vibration
per IEC 2-6, frequency range
10-55Hz, amplitude: 0.35mm
Shock
per IEC 2-29, acceleration 10g, pulse
duration: 16ms
Optics (Co-axial Transmitter and Receiver Optics)
Laser Beam Divergence
15 mrad (0.86°)
Focal Length
30mm (1.18in)
Lens Diameter
30mm (1.18in)
Power Supply
Operating Voltage
24V DC ± 25% (via a safety insulating
transformer acc. to IEC 742)
Switch on Current
2A for 100ms
Power Consumption
24W total
Housing and Environmental Resistance
Material
Aluminium
Enclosure Rating
IP 65
Weight
3.0kg
Operating Temperature
Storage Temperature
0°C ... 50°C (32°F to 122°F)
-20°C ... 70°C (-4°F to 158°F)
Interfaces
Data Interfaces to
Computer
RS 232: 9600 baud, 8 data bits,
1 stop bit, no parity
Signal Outputs for Warning
Field, OSSD 1, OSSD 2
Potential-free relay outputs, max. 2A,
max. 30V, purely resistive load, number
of operations; 2 million
2-68