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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

0

°C ... 50°C (32°F to 122°F)

Storage Temperature

-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