LGM8 Light grid

Key Benefits at a Glance

Measuring automation light grid with switching output
Optical resolution 8 mm
Super-fast object detection, even with 3-way beam crossover
Object identification using integrated object recognition
IO-Link interface for service and process data
Temperature range to -30 °C
Output of a measured value, can be selected from a number of measuring functions

Note

All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Datasheet Function Classification Informative Literature Product Documentation Design / Simulation Approvals Software Related Products

Technical data of LGM8

Measuring automation light grid with beam spacing of 8 mm, IO-Link interface, push-pull output, fixed cable with M12 plug

Effective detection range		Standard : 0.3 ... 6 m
Threshold detection range		7.5 m
Light source		IRED
Light type		modulated infrared light , 850 nm
Field height		see Table 1, max. 2100 mm
Beam crossover		Factory setting: three beam crossing, deactivateable
Beam blanking		adjustable max. 2 fixed suppressible beam areas (blanking)
Beam spacing		8.33 mm
Number of beams		see Table 1, max. 253
Operating mode		Emitter: Emitter power adjustable in two ranges
Optical resolution		without beam crossover: 8 mm with beam crossover: 4 mm with in 25% and 75% of the range
Opening angle		10 °
Ambient light limit		> 50000 Lux (if external light source is outside the opening angle)

MTTF_d		21 a
Mission Time (T_M)		20 a
Diagnostic Coverage (DC)		60 %

Operation indicator		LED green: constantly on - power-on double pulse flashing (0.8 Hz) - undervoltage flashing (4 Hz) - short circuit flashing with short break (1 Hz) - IO-Link mode
Status indicator		Emitter: LED yellow constantly on - high emitter power constantly off - low emitter power flashing (8 Hz) - error message Receiver: LED yellow: constantly on - object detected constantly off - no object detected flashing (4 Hz) - falling below operating reserve flashing (8 Hz) - error message
Control elements		Receiver: 2 touch buttons for programming

Operating voltage	U_B	18 ... 30 V DC
Ripple		10 %
No-load supply current	I₀	Emitter ≤: 50 mA Receiver: ≤ 150 mA (without outputs)
Time delay before availability	t_v	see Table 1, max. 3.8 s

Interface type		IO-Link ( pin 4 )
IO-Link revision		1.0
Device ID		1050369 ... 1050389 ( 0x100701 ... 0x100715 )
COM-Mode		COM2 (38.4 kBit/s)
Min. cycle time		2.3 ms
Process data width		16 bit
SIO mode support		yes

Test input		Emitter switch-off with +UB or 0 V at pin 4 (emitter)
Function input		Range input activation from 1.6 m with +UB or 0 V on pin 2 (emitter) Teach-In input for parameterization on pin 8 (receiver)

Stability alarm output		Stability Control (SC) 1 PNP, short-circuit protected, reverse polarity protected on pin 2 (receiver)
Switching type		Factory setting: dark on , Switchable to light-on mode
Signal output		Command interface: Pin 4 IO-Link interface C or used as switching output Q; 1 short-circuit proof reverse polarity protected push-pull output (receiver) Switch output: Pin 5 switching output Q; 1 short-circuit proof reverse polarity protected push-pull output (receiver) synchronized with pin 4
Switching threshold		Factory setting: The signal tracking for the threshold value is deactivated, increasing the optical resolution by a maximum of 4 mm; switchable to active signal tracking
Switching voltage		max. 30 V DC
Switching current		max. 100 mA
Voltage drop	U_d	≤ 2 V DC
Switching frequency	f	see Table 1, max. 118 Hz
Response time		see Table 1, max. 20 ms
Timer function		Off-delay programmable from 0 ... 1.25 s in 5 ms steps (adjustment via IO-Link only)

Communication interface		IEC 61131-9
Product standard		EN 60947-5-2

Protection class		III ( IEC 61140 )
UL approval		cULus Listed
CCC approval		CCC approval / marking not required for products rated ≤36 V

Ambient temperature		-30 ... 60 °C (-22 ... 140 °F)
Storage temperature		-30 ... 70 °C (-22 ... 158 °F)

Conductor cross section

min. 0.25 mm²

Degree of protection

IP67

Connection

Emitter: connecting cable with 4-pin, M12 x 1 connector , 330 mm total length
Receiver: connecting cable with 8-pin, M12 x 1 connector , 350 mm total length

Material

Housing		extruded aluminum section , Silver anodized
Optical face		Plastic pane , Polycarbonate

Mass

see Table 1, max. 1200 g (per profile)

Dimensions

Width		20 mm
Depth		30.5 mm
Length		2260 mm see Table 1, max.

Cable length

max. 30 m

General Notes

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