» IFM Electronic » IFM O6H702 Diffuse reflection sensor with background suppression

IFM O6H702 Diffuse reflection sensor with background suppression


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  • Precise background suppression
  • Reliable transmission of the distance as linearised process value via IO-Link
  • Excellent price/performance ratio
  • Compact rectangular desig
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Product characteristics
Type of light red light
Laser protection class 1
Housing rectangular
Special feature Background suppression
Function principle Diffuse reflection sensor
Electrical data
Operating voltage [V] 10…30 DC
Current consumption [mA] 16; (24 V)
Protection class III
Reverse polarity protection yes
Type of light red light
Wave length [nm] 650
Electrical design PNP
Output function light-on/dark-on mode; (selectable)
Max. voltage drop switching output DC [V] 2.5
Permanent current rating of switching output DC [mA] 100
Switching frequency DC [Hz] 1000
Short-circuit protection yes
Type of short-circuit protection pulsed
Detection zone
Range [mm] 1…100; (white paper 200 x 200 mm)
Range on white object (90 % remission) [mm] 1…100
Range on grey object (18 % remission) [mm] 8…100
Range on black object (6 % remission) [mm] 12…100
Range adjustable yes
Max. light spot diameter [mm] 2
Light spot dimensions refer to at maximum range
Background suppression available yes
Communication interface IO-Link
Transmission type COM2 (38,4 kBaud)
IO-Link revision 1.1
SDCI standard IEC 61131-9
Profiles Smart Sensor: Device Identification; Device Diagnosis; Teach Channel; Switching Channel; Process Data Variable
SIO mode yes
Required master port type A
Min. process cycle time [ms] 10
IO-Link process data (cyclical)
function bit length
process value 32
device status 4
binary switching information 1
IO-Link functions (acyclical) application specific tag; operating hours counter; switch-on cycle counter
Supported DeviceIDs
Type of operation DeviceID
Default 526
Operating conditions
Ambient temperature [°C] -10…60
Protection IP 65; IP 67
Tests / approvals
EN 60947-5-2
Laser protection class 1
Notes on laser protection
Caution: laser light
laser class: 1
EN / IEC60825-1:2007
EN / IEC60825-1:2014
Complies with 21 CFR 1040 except for deviations pursuant to Laser Notice No. 50, dated June 2007.
MTTF [years] 513
Mechanical data
Weight [g] 19.5
Housing rectangular
Dimensions [mm] 46 x 13 x 21
Materials housing: ABS; PPSU; Sealing: EPDM
Lens material
Lens alignment side lens
Tightening torque [Nm] 0.5; (screws)
Displays / operating elements
switching status 1 x LED, yellow
operation 1 x LED, green
operating voltage “supply class 2” according to cULus
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M8; coding: A
Diagrams and graphs

x: distance sensor/object [mm]
y: min. distance object/background [mm]
1 = object black (6 % remission) , $Hintergrund_weiss_90_Remission
2 = object grey (18 % remission) , $Hintergrund_weiss_90_Remission
3 = object white (90 % remission) , $Hintergrund_weiss_90_Remission

a: sensor
b: object
c: background
x: distance sensor/object [mm]
y: min. distance object/background [mm]
Other data
Repeatability / precision: 6 σ
repeatability of the measured values
Abstandwhite (90 % remission)black (6 %…90 % remission)
20 mm0.1 mm0.5 mm
50 mm0.2 mm1.0 mm
100 mm05 mm2.0 mm
Abstandwhite (90 % remission)black (6 %…90 % remission)
20 mm± 0.6 mm± 0.9 mm
50 mm± 1.5 mm± 2.0 mm
100 mm± 3.0 mm± 4.0 mm
The values apply at
Extraneous light on the object< 10 klx
constant ambient conditions 23 °C / 960 hPa
minimum power-on time in minutes10
IO-Link – measuring mode

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