IFM O6H7 Series User manual

Operating instructions
Diffuse reflection sensor with background suppression
O6H7
1141532 / 0009 / 2021
GB

O6H7 Diffuse reflection sensor with background suppression
2
Contents
1 Preliminary note ............................................................. 3
1.1 Symbols used.......................................................... 3
1.2 Warnings used ......................................................... 3
2 Safety instructions............................................................ 4
3 Intended use................................................................ 5
4 Installation.................................................................. 6
5 Operating and display elements................................................. 7
5.1 Stability indication....................................................... 7
6 Electrical connection.......................................................... 8
6.1 PNP ................................................................. 8
6.2 NPN ................................................................. 8
7 Settings.................................................................... 9
7.1 Set via the sensor....................................................... 9
7.1.1 Sensor is to switch when the object is detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1.2 Sensor is not to switch when the object is detected . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1.3 Set maximum range ................................................. 9
7.1.4 Programming unsuccessful............................................ 9
7.1.5 Electronic lock...................................................... 10
7.2 Set via IO-Link ......................................................... 10
7.2.1 General information.................................................. 10
7.2.2 Device-specific information............................................ 10
7.2.3 Parameter setting tools............................................... 10
7.2.4 Functions ......................................................... 10
7.2.5 Adjustable parameters ............................................... 10
7.2.6 Set range by means of background and object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.2.7 Set range by means of background. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2.8 Read distance value................................................. 12
7.2.9 Set maximum range ................................................. 12
8 Operation .................................................................. 13
9 Maintenance, repair and disposal................................................ 14

Diffuse reflection sensor with background suppression O6H7
3
1 Preliminary note
You will find instructions, technical data, approvals and further information using the QR code on the
unit / packaging or at www.ifm.com.
1.1 Symbols used
Requirement
Instructions
Reaction, result
[...] Designation of keys, buttons or indications
Cross-reference
Important note
Non-compliance may result in malfunction or interference.
Information
Supplementary note
1.2 Warnings used
CAUTION
Warning of personal injury
wSlight reversible injuries may result.

O6H7 Diffuse reflection sensor with background suppression
4
2 Safety instructions
• The unit described is a subcomponent for integration into a system.
– The system architect is responsible for the safety of the system.
– The system architect undertakes to perform a risk assessment and to create documentation in
accordance with legal and normative requirements to be provided to the operator and user of
the system. This documentation must contain all necessary information and safety instructions
for the operator, the user and, if applicable, for any service personnel authorised by the
architect of the system.
• Read this document before setting up the product and keep it during the entire service life.
• The product must be suitable for the corresponding applications and environmental conditions
without any restrictions.
• Only use the product for its intended purpose (Ò → Intended use).
• If the operating instructions or the technical data are not adhered to, personal injury and/or damage
to property may occur.
• The manufacturer assumes no liability or warranty for any consequences caused by tampering with
the product or incorrect use by the operator.
• Installation, electrical connection, set-up, operation and maintenance of the product must be
carried out by qualified personnel authorised by the machine operator.
• Protect units and cables against damage.
CAUTION
Exposure to radiation
wInjury due to dangerous exposure to radiation
uOnly use the operating and adjusting devices indicated in the operating instructions.
CAUTION
Visible laser light; LASER CLASS 1.
EN/IEC 60825-1 : 2007 and EN/IEC 60825-1 : 2014 complies with 21 CFR Part 1040 except
for deviations pursuant to Laser Notice No. 50, dated June 2007.
Position of the product label Warning sign
LASER KLASSE 1
CLASS 1 LASER PRODUCT
APPAREIL Á LASER CLASSE 1

Diffuse reflection sensor with background suppression O6H7
5
3 Intended use
The diffuse reflection sensor detects objects and materials without contact and indicates their
presence by a switching signal.

O6H7 Diffuse reflection sensor with background suppression
6
4 Installation
uAlign the diffuse reflection sensor to the object to be detected.
uSecure it to a bracket.
The objects to be detected should move transversely to the lens of the sensor.
uIn case of other directions of movement it should be tested before whether safe switching is
guaranteed.
Object shiny
uIn case of shiny object surfaces and less shiny background surfaces the sensor should be
mounted at an angle of approx. 5 to 10°.
Background shiny
uIn case of shiny background surfaces and less shiny object surfaces the sensor should be
mounted vertically to the background surface.

Diffuse reflection sensor with background suppression O6H7
7
5 Operating and display elements
2
3
4
1
1: LED green - operation, stability indication 2: Button [OUT OFF]
3: LED yellow - switching output active 4: Button [OUT ON]
5.1 Stability indication
The green LED is lit when the supply voltage is applied and there is sufficient excess gain. Under
these conditions the sensor receives a stable signal.
Stable signal Switch point Stable signal
Light-on mode
LED green on off off on
LED yellow on on off off
Dark-on mode
LED green on off off on
LED yellow off off on on

O6H7 Diffuse reflection sensor with background suppression
8
6 Electrical connection
The device must be connected by a qualified electrician.
Observe the national and international regulations for the installation of electrical equipment.
Voltage supply according to EN50178, SELV, PELV.
uDisconnect power.
uConnect the unit as follows:
6.1 PNP
M12 pigtail plug Cable *
M8 connector, 3 poles M8 connector, 4 poles
2
1
4
3
* Core colours: BN = brown, BU = blue, BK = black
6.2 NPN
M12 pigtail plug Cable *
L+
L
1
4
3
L
BN
BK
BU
L+
M8 connector, 3 poles M8 connector, 4 poles
L+
L
1
4
3
L+
L
1
4
3
2
1
4
3
* Core colours: BN = brown, BU = blue, BK = black

Diffuse reflection sensor with background suppression O6H7
9
7 Settings
7.1 Set via the sensor
7.1.1 Sensor is to switch when the object is detected
Fig.1: Button [OUT ON]
uPosition the object.
uPress [OUT ON] > 2 s.
wThe yellow LED flashes.
wThe setting of the range with object is made by releasing [OUT ON].
Fig.2: Button [OUT OFF]
uRemove the object.
uPress [OUT OFF].
wThe setting of the range without object is made by releasing [OUT OFF].
wThe yellow LED goes out. Programming is completed.
7.1.2 Sensor is not to switch when the object is detected
uPosition the object (see figure 1) and press [OUT OFF] > 2 s.
uRemove the object (see fig. 2) and press [OUT ON].
The settings can also be carried out first without object and then with object.
7.1.3 Set maximum range
uAlign the sensor so that no light is reflected.
Sensor is to switch when the object is detected
uPress[OUT ON] > 2 s, then press [OUT OFF].
Sensor is not to switch when the object is detected
uPress[OUT OFF] > 2 s, then press [OUT ON].
7.1.4 Programming unsuccessful
Failed programming is signalled by the fast flashing LED (8 Hz).
Possible causes:

O6H7 Diffuse reflection sensor with background suppression
10
• Measured value difference too small
• Max. programming time (15 min.) exceeded.
7.1.5 Electronic lock
Lock or unlock the buttons
uPress [OUT ON] and [OUT OFF] simultaneously for 10 s.
wAcknowledgement is indicated by a brief change of the LED status.
7.2 Set via IO-Link
7.2.1 General information
This unit has an IO-Link communication interface that requires an IO-Link capable module (IO-Link
master) for operation.
The IO-Link interface enables direct access to the sensor values and parameters and provides the
possibility to set the parameters of the unit during operation.
In addition, communication is possible via a point-to-point connection with a USB adapter cable.
You will find more detailed information about IO-Link at www.ifm.com.
7.2.2 Device-specific information
You will find the IODDs required for the configuration of the IO-Link unit and detailed information about
sensor values, diagnostic information and parameters in the overview table at www.ifm.com.
7.2.3 Parameter setting tools
You will find all necessary information about the required IO-Link hardware and software at
www.ifm.com.
7.2.4 Functions
With IO-Link all functions and measured data are available that can also be accessed via the display
and pushbuttons on the unit.
All functions are described in detail in the IODD.
7.2.5 Adjustable parameters
Among others, the following parameters can be set via IO-Link.
You will find the IODDs necessary for the configuration of the IO-Link unit and detailed
information about sensor values, diagnostic information and parameters in the overview table at
www.ifm.com.
Parameter Values Description Default setting
[SSC1 Param.SP1] 17 mm ...100 mm Setting of switch point in 1
mm increments. After a teach
process the resulting value is
displayed.
Please refer to the data sheet
value "Range"

Diffuse reflection sensor with background suppression O6H7
11
Parameter Values Description Default setting
[Teach SP1 TP1] Teach sequence to set switch
point [SP1]. Part One [TP1]:
teach on object. Both parts of
the teach sequence for [TP1]
and [TP2] have to be execut-
ed in order to place switch
point [SP1] between the ob-
ject and the background ([TP]
= Teach point).
n.a.
[Teach SP1 TP2] Teach sequence to set switch
point [SP1]. Second part
[TP2]: teach on background.
Both parts of the teach se-
quence for [TP1] and [TP2]
have to be carried out ([TP] =
Teach point).
n.a.
[Teach Custom SP1 without
target]
Teaching on the background
only, the switch point is de-
fined just before the back-
ground. Select this setting as
alternative to teaching [SP1] if
no object is available.
n.a.
[TI Result.State] • [Idle]
• [SP1 Success]
• [Wait for command]
• [Busy]
• [Error]
• [Custom]
Teach-in status; after suc-
cessful teach the value "[SP1
Success]“ is displayed.
n.a.
[Sequence modulation] • [OFF]
• [AUTo]
[OFF]: anti-crosstalk function
off
[AUTo]: anti-crosstalk function
on
[OFF]
[SSC1 Config.Logic] [High active]
[Low active]
Switch point logic, status for
detected object (High: light-on
mode / normally open, Low:
dark-on mode / normally
closed)
Please refer to the data sheet
value [output function]
[SSC1 SwitchOn delay] 0 ... 2 Switch-on delay; step incre-
ment 0.1s
0
[SSC1 SwitchOff delay] 0 ... 2 Switch-off delay step incre-
ment 0.1s
0
[ModE] • [Switching]
• [Measuring]
[Switching]: Mode for switch-
ing signals
[Measuring]: Mode for dis-
tances
n.a.
[Transmitter configuration] • [On]
• [Off]
Configuration transmitted light
on / off
[On]
[Number of power cycles] 0 ... 65535 Number of switching opera-
tions (power up) of the sensor
n.a.
[Operating hours] 0 ... 65535 Operating hours n.a.
7.2.6 Set range by means of background and object
uStart the parameter setting software.
uAlign the diffuse reflection sensor to the object (fig. 3).
uClick the button [Teach SP1 TP1] in the parameter setting software.
uAlign the diffuse reflection sensor to the background (fig. 4).
uClick the button [Teach SP1 TP2] in the parameter setting software.

O6H7 Diffuse reflection sensor with background suppression
12
wThe switch point [SP1] is between object and background (fig. 5).
TP1
Fig.3: Sensor - object
TP1: teach point 1
TP2
Fig.4: Sensor - background
TP2: teach point 2
TP2TP1 SP1
1
Fig.5: Position switch point [SP1]
1: zone "object recognised"
Either the object can be set first and then the background, or the other way around.
7.2.7 Set range by means of background
If the object is not available, the range can be set using only the background.
The switching characteristics of the diffuse reflection sensor are most reliable if the range is set
using the background and the object. (Ò Set range by means of background and object/11)
uStart the parameter setting software.
uAlign the diffuse reflection sensor to the background (fig. 6).
uClick the button [Teach Custom - SP1 without target] in the parameter setting software.
wThe switch point [SP1] is just in front of the background (fig. 7).
Fig.6: Diffuse reflection sensor directed towards
background
SP1
1
Fig.7: Diffuse reflection sensor directed towards
background with [SP1]
1: zone "object recognised"
7.2.8 Read distance value
Distance values can also be determined via the IO-Link function.
uStart the parameter setting software.
uChange parameter [ModE] from [Switching] to [Measuring].
wThe sensor transmits distance values to the parameter setting software.
7.2.9 Set maximum range
uStart the parameter setting software.
uAlign the diffuse reflection sensor to an empty area without object or background.
wThe diffuse reflection sensor must not receive any light from the object or the background.
uClick the button [Teach Custom - SP1 without target] in the parameter setting software.

Diffuse reflection sensor with background suppression O6H7
13
8 Operation
uCheck whether the unit operates correctly.
wThe green LED is lit when the supply voltage is applied and there is sufficient excess gain.
wSetting the dark-on mode: The output is switched / the yellow LED is on when an object is
detected.
wSetting the light-on mode: The output is switched / the yellow LED is on when no object is detected.

O6H7 Diffuse reflection sensor with background suppression
14
9 Maintenance, repair and disposal
uKeep the lenses of the sensor free from soiling.
uFor cleaning do not use any solvents or cleaning agents which could damage the plastic parts.
uAfter use dispose of the unit in an environmentally friendly way in accordance with the applicable
national regulations.
Faulty sensors must only be repaired by the manufacturer.