Photoelectric Sensor Pepperl+Fuchs LA28/LK28-FC-Z/31/116

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Photoelectric Sensor LA28/LK28-FC-Z/31/116

Brand: Pepperl+Fuchs
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Datasheet excerpt: Technical data of LA28/LK28-FC-Z/31/116

Classifications

Item Specification
Compact photoelectric sensor for fire detection

Overall specifications
Operational sensing range		0 ... 10 m
detection range threshold		10 m
illumination source		LED, 660 nm and infrared LED, 880 nm
Illumination type		modulated visible red beam and modulated infrared beam
Alignment tool		Red LED (within receiver lens) constantly illuminated: beam is interrupted, flashes: achieving switching threshold, off: adequate operational margin
Size of the illumination spot		approx. 0.2 m at 10 m
angle of opening		Emitter 1.2°, Receiver 5th
Ambient light threshold		50000 Lux
Parameters related to functional safety
MTTF_d		490 a
task duration (T_M)		20 a
Diagnostic Range (DC)		0 %
Indicators/operation controls
Operational status indicator		LED green
operation indicator		Yellow indicator LED: 1. LED continuously illuminated: signal > 2 x switching threshold (functioning margin) 2. LED blinks: signal between 1 x switching threshold and 2 x switching threshold 3. LED off: signal < threshold point
control components		Light-on/dark-on toggle switch ; Timing adjustment device
Electrical parameters
Operational voltage		12 ... 240 V AC/DC
Energy usage		= 3.5 VA
Output
Type of switch		light/dark on, selectable. (light/dark switching is only enabled when the receiver is set to 'dark on')
Output signal		Relay, 1 alternator
Switching voltage level		max. 250 V AC/DC
Switching capacity		max. 2 A
Conversion power		DC: max. 50 W AC: max. 500 VA
commutation frequency		25 Hz
reaction time		20 ms
Timing feature		ON delay (GAN), OFF delay (GAB), single shot (IAB), ON delay-OFF delay (GAN-GAB), programmable adjustment range 0.1 ...10 s
Compliance with standards
Standards		EN 60947-5-2 smoke insensitive up to 2 dB/m ( EN 54-12 )
Certifications and approvals
Ingress protection rating		II, rated insulation voltage = 250 V AC with pollution degree 1-2 according to IEC 60664-1 Output circuit insulated from control circuit in accordance with IEC 61140. Caution! The protection class 2 applies only when the terminal chamber is secured
CCC certification		Approved by China Compulsory Certification (CCC)
Certifications		VdS/DIBt compliance certificate No. 25021, approval number Z-6.510-2383
Environmental conditions
Ambient temperature		-40 ... 60 °C (-40 ... 140 °F)
Ambient storage temperature		-40 ... 60 °C (-40 ... 140 °F)
Comparative moisture content		30% ... 85% non-condensing ; Non-icing
Mechanical characteristics
Protection等级		IP67
Linkage		terminal chamber featuring 8 spring-loaded terminals for wire cross-section of 0.5 ... 1.5 mm² , Insulation stripping 7.5 ... 8.5 mm , M16 x 1.5 cable gland
Material
	Housing	plastic
	optical surface	synthetic panel
Mass		200 g (transmitter and receiver)
Measurements
	Height	88 mm
	Width	25.8 mm
	Depth	65.5 mm