IFM MK59 Series User manual

Operating instructions
Cylinder sensor with IO-Link
MK59xx
11463922 / 0012 / 2022
GB

MK59xx Cylinder sensor with IO-Link
2
Contents
1 Preliminary note ............................................................. 3
1.1 Symbols used.......................................................... 3
2 Safety instructions............................................................ 4
3 Items supplied............................................................... 5
4 Intended use................................................................ 6
4.1 Application area ........................................................ 6
4.2 Restriction of the application area........................................... 6
5 Function ................................................................... 7
5.1 Measuring principle...................................................... 7
5.2 Signal range........................................................... 7
5.3 Switching signal ........................................................ 8
5.4 Application examples for position monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.4.1 End position with setting aid........................................... 9
5.4.2 Detecting two end positions (short-stroke cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.4.3 Position detection................................................... 10
5.4.4 Inline material detection .............................................. 10
5.5 IO-Link ............................................................... 11
6 Installation.................................................................. 12
6.1 Geometric alignment..................................................... 12
7 Electrical connection.......................................................... 13
8 Operating and display elements................................................. 14
9 Parameter setting............................................................ 15
9.1 Setting switch points..................................................... 15
9.2 Teach functions......................................................... 16
9.2.1 Switch point teach................................................... 16
9.2.2 Section Teach...................................................... 17
9.2.3 Teach In Application................................................. 18
9.3 Switch point logic ....................................................... 19
9.4 Switching delay......................................................... 19
9.5 Signal direction......................................................... 19
9.6 Output polarity of the switching outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9.7 Output off ............................................................. 20
9.8 Diagnostics............................................................ 21
9.8.1 Stroke time monitoring ............................................... 21
9.8.2 Switching cycle monitoring ............................................ 23
9.8.3 Magnetic field monitoring ............................................. 24
9.8.4 Operating hours counter.............................................. 24
9.8.5 Power cycles....................................................... 24
9.8.6 Internal temperature................................................. 24
9.9 Parameter setting examples............................................... 25
9.9.1 Detecting two end positions (short-stroke cylinder) . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.9.2 Inline material detection .............................................. 26
9.9.3 Soiling indication.................................................... 27
9.10 Resetting the device..................................................... 28
9.11 Identification........................................................... 29
9.11.1 Device information .................................................. 29
9.11.2 Optical localisation .................................................. 29
10 Operation .................................................................. 30
11 Troubleshooting ............................................................. 31
12 Maintenance, repair and disposal................................................ 32
13 Factory settings.............................................................. 33

Cylinder sensor with IO-Link MK59xx
3
1 Preliminary note
You will find instructions, technical data, approvals, accessories 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

MK59xx Cylinder sensor with IO-Link
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.

Cylinder sensor with IO-Link MK59xx
5
3 Items supplied
• Cylinder sensor
• Cable clip
• Rubber placeholder
The following are additionally required for installation: hexagon socket 1.5 mm or slotted
screwdriver (not included).

MK59xx Cylinder sensor with IO-Link
6
4 Intended use
The device continuously monitors the position of a permanent magnet without contact.
The permanent magnet is detected through non-ferromagnetic cylinder housings.
4.1 Application area
The device is used to detect the position of the piston in pneumatic cylinders.
The device detects the ring magnet attached to a piston through a housing wall of non-magnetisable
material (aluminium, brass or stainless steel).
Special adapters for mounting on the following cylinder profiles are available as accessories:
• Clean line and tie rod cylinders
• Integrated profile cylinder
• Trapezoidal slot cylinder
4.2 Restriction of the application area
The device is not approved for use in potentially explosive atmospheres.
Incorrect measurements may be caused by the following environmental conditions:
• Ferromagnetic environment (elements made of iron)
• Alternating electromagnetic fields
• Rotation of magnets can lead to fluctuations in field strength.
uCheck the correct function by performing an application test.

Cylinder sensor with IO-Link MK59xx
7
5 Function
The device provides the following functions and signals them with a switching signal:
• monitoring the piston position in pneumatic cylinders.
• diagnostic functions:
–Stroke time monitoring (Ò/21)
–Switching cycle monitoring (Ò/23)
–Magnetic field monitoring (Ò/24)
Depending on the device type, one or two physical switching outputs are available:
T-slot sensors Number of switching outputs
MK5904, MK5907, MK5908, MK5909 2
MK5905, MK5906 1
5.1 Measuring principle
The device measures the magnetic field in 2 spatial directions (Bx and By) and calculates the absolute
magnetic field (Babs) and a position-dependent signal [PDV1].
The absolute magnetic field must be in the range of 1 mT...20 mT.
Bx
By
B
abs
Bx: Magnetic field in x-direction
By: Magnetic field in y-direction
Babs: Absolute magnetic field
If the magnetic system is designed accordingly, the calculated output signal is linear and proportional
to the position of an encoder magnet.
Ferromagnetic materials (iron), permanent magnets and magnetic fields in the vicinity of the
device or the encoder magnet can influence and falsify the signal.
5.2 Signal range
The device provides a measured value [PDV1] depending on the position of the encoder magnet in
the range of 0...4000. This value is dimensionless, but proportional to the position of the encoder
magnet.
The output signal corresponds to the value 2000 when the encoder magnet is centred under the target
marking "T" on the sensor. Due to the shape of the encoder magnet and the distance between the
device and the magnet, different slopes of the signal curve as well as different resolutions and
measuring ranges can be achieved.
The longer a magnet is, the lower the slope of the signal curve and the resolution and the larger
the measuring range becomes.
If the magnets are too weak or the distance between the device and the magnet is too great, the
signal range may be limited at the edges if the magnetic field is too weak.
If the magnets are too strong or the distance between the device and the magnet is too small,
the signal range may be interrupted in the middle if the magnetic field is too strong.

MK59xx Cylinder sensor with IO-Link
8
5.3 Switching signal
The device has 2 switching signal channels SSC1.1 and SSC1.2. Each switching signal channel has a
parameter set with which the switching behaviour can be adjusted.
Using the parameter setting software, the switching signal channels can be freely assigned to one of
the outputs OUT1 or OUT2.
For devices that have only one output, the switching signal channels SSC1.1 and SSC1.2 can
only be assigned to OUT1.
The switch points and the switch point logic are set when the switching signal channel parameters are
set. If the process data value (PDV) exceeds a switch point, the hardware output changes its switching
state (active or inactive). Depending on the setting of the switch point logic, the output is in the active
switching state [High active] or [Low active]:
• [High active]: Output in active state closed/ON (normally open/NO).
• [Low active]: Output in active state open/OFF (normally closed/NC).
You can choose between the following switch point modes according to the IO-Link smart sensor
profile - Function Class "Object Detection" - : [Deactivated], [Single Point], [Window], [Two Point].
Deactivated
If the [Deactivated] mode is set for a switching signal channel, the assigned hardware output will not
change its switching state depending on the process data value, but permanently assumes the
inactive state: If the deactivated switching signal channel is set to [High active], it is permanently "low",
if it is set to [Low active], it is permanently "high".
Single-point mode
Only one switch point (SP1) is manually set or taught. The switch-off point results from the switch point
and the set hysteresis (H).
The switch point SP2 will be ignored in Single Point Mode.
active inactive
PDV0SP1+H
SP1
H
Fig.1: Single-point mode
Two-point mode
A switch point and a reset point are manually set or taught.
It is possible to configure which of the two switch points is the larger one. The larger switch point is the
reset point. In the example shown, SP2 is the switch point and SP1 is the reset point.
The hysteresis will be ignored in Two Point Mode.
PDV0SP1
SP2
active inactive
Fig.2: TwoPoint Mode

Cylinder sensor with IO-Link MK59xx
9
Window mode
Two switch points (SP1) and (SP2) are manually set or taught. The two switch points delimit a window
area.
Switching back takes place when the hysteresis is exceeded after leaving the window area.
activeinactive inactive
PDV0
SP2SP1
H
H
Fig.3: Window mode
5.4 Application examples for position monitoring
5.4.1 End position with setting aid
The setting aid can be used to shut down a device or valve prematurely so that the cylinder moves
more smoothly into the end stop.
Cylinder shortly before the end position (e.g. at
80 % of the end position):
LED 1 is on. The output to which SSC1.1 has
been assigned switches.
Cylinder in the end position:
Both LEDs are on, both outputs switch.
5.4.2 Detecting two end positions (short-stroke cylinder)
If the stroke of the cylinder does not exceed the measuring range of the device, both end positions can
be displayed with one device.
Cylinder in end position 1:
LED 1 is on. The output to which SSC1.1 has
been assigned switches.

MK59xx Cylinder sensor with IO-Link
10
Cylinder in end position 2:
LED 2 is on. The output to which SSC1.2 has
been assigned switches.
See also application example (Ò Detecting two end positions (short-stroke cylinder)/25).
5.4.3 Position detection
When using the IO-Link interface, the magnet position can be evaluated exactly via a dimensionless
process data value between 0...4000. The process data value is linearly proportional to the magnet
position.
Thanks to accurate position detection, process deviations can be monitored, such as the drift of an
operation as well as wear and soiling. In this way, quality monitoring can be carried out independently
of switch points by the PLC.
Cylinder between the end positions.
2
1
1: Process data value [PDV1]
2: Magnet position
Accurate position detection through continuous
measurement.
5.4.4 Inline material detection
With inline material detection, objects can be recognised, compared and counted. This can be done
using accurate position detection via IO-Link or the physical switching outputs and the LED display.
Cylinder detects predefined object.

Cylinder sensor with IO-Link MK59xx
11
Cylinder detects no object.
See also application example (Ò Inline material detection/26).
5.5 IO-Link
IO-Link is a communication system for connecting intelligent sensors and actuators to automation
systems. IO-Link is standardised in the IEC 61131-9 standard.
General information on IO-Link at io-link.ifm
Input Output Device Description (IODD) with all parameters, process data and detailed
descriptions of the device at documentation.ifm.com
IO-Link offers the following advantages:
• Interference-free transmission of all data and process values
• Parameter setting in the running process or presetting outside the application
• Parameters for identifying the connected devices in the system
• Additional parameters and diagnostic functions
• Automatic backup and restore of parameter sets in case of device replacement (data storage)
• Logging of parameter sets, process values and events
• Device description file (IODD - Input Output Device Description) for easy project planning
• Standardised electrical connection
• Remote maintenance

MK59xx Cylinder sensor with IO-Link
12
6 Installation
To simplify installation, the two switching signal channels are set to [Window Mode] when delivered:
The larger window area of SSC1.1 indicates the entire switching range with LED1, the smaller window
area of SSC1.2. indicates the middle of the switching range with LED2.
2
3
1
SP1
0 4000
SSC1.2
SSC1.1
SP1
SP2 SP2
Fig.4: Installation with factory
setting
uInsert the device into the groove in the middle of the cylinder.
uPush the device in the groove in the direction of the end position
that is to be detected.
wLED1 goes on when the switch point SSC1.1 SP1 is reached (1).
uPush the device further towards the end position.
wLED2 goes on when the switch point SSC1.2 SP1 is reached.
When both LEDs are on, this indicates the middle of the
switching area (2).
uFix the device in this position using the fastening clamp if the end
position is to be roughly detected.
If the end position is to be detected as precisely as possible:
uPush the device further towards the end position until LED2 goes
out (3).
uFix the device in this position using the fastening clamp.
6.1 Geometric alignment
The magnetic axis of the encoder magnet should be parallel to the longitudinal axis of the device and
correspond to the direction of movement.
SN1
1: Magnetic axis
In the event of magnetisation errors (magnetic axis not parallel to the device) or an offset
between the magnetic axis and the sensor plane, the linearity of the output signal [PDV1] will be
impaired.

Cylinder sensor with IO-Link MK59xx
13
7 Electrical connection
The unit must be connected by a qualified electrician.
Observe the national and international regulations for the installation of electrical equipment.
Voltage supply according to SELV, PELV.
uDisconnect power.
uConnect the unit as follows:
L
1 BN
2 WH
4 BK
3 BU
OUT1/IO-Link
OUT2
L+
43
2 1
Fig.5: Wiring diagram (colours to DINEN60947-5-2)
BK: black BN: brown
BU: blue WH: white
Pin Connection
1 L+
3 L-
4 (OUT1) switching output or IO-Link
2 (OUT2) switching output (depending on device type (Ò Function/7))
L
1
BN
2
WH
4
BK
3
BU
L+
L
1
BN
2
WH
4
BK
3
BU
L+
2
1
Fig.6: Circuit examples
1: 2 x pnp
2: 2 x npn

MK59xx Cylinder sensor with IO-Link
14
8 Operating and display elements
2
3
45
1
1: Fastening clamp
2: LED green (ready for operation)
3: LED2 yellow (switching signal channel SSC1.2)
4: Sensing face
5: LED1 yellow (switching signal channel SSC1.1)
The two LEDs are permanently assigned to the switching signal channels: LED1 to SSC1.1 and LED2
to SSC1.2.
If the switching status LEDs are yellow, this signals the active status of the switching signal channel.
• If the switching signal channel is set to the switch point logic [High active], the LED goes on when
the output is closed.
• If the switching signal channel is set to the switch point logic [Low active], the LED goes on when
the output is open.
The two yellow switching status LEDs can be set to synchronous double flashing with the
command [Locator] in order to be able to identify the device in the installation (Ò Optical
localisation/29).
In the event of a short circuit or hardware error in the device, both yellow switching status LEDs
will flash until the error is eliminated (Ò Troubleshooting/31).

Cylinder sensor with IO-Link MK59xx
15
9 Parameter setting
The parameters are set via the IO-Link interface on pin 4 using the parameter setting software.
Parameters can be set before installation or during operation.
If you change parameters during operation, this will influence the function of the plant.
uEnsure that there will be no malfunctions in your plant.
During parameter setting the unit remains in the operating mode. It continues to monitor with the
existing parameter until the parameter setting has been completed.
Requirements for parameter setting via the IO-Link interface:
üA suitable parameter setting software, e.g. ifm moneo|configure
üThe Input Output Device Description (IODD) for the device, see documentation.ifm.com
üOne IO-Link master
uConnect the IO-Link master to a parameter setting software.
uSet the port of the master to the IO-Link operating mode.
uConnect the device to a free port of the IO-Link master.
wThe unit switches to IO-Link mode.
uChange parameter settings in the software.
uWrite parameter settings to the unit.
Notes on parameter setting Ò Manual of the parameter setting software
When the pneumatic cylinder is changed, it may also be necessary to adapt the device settings.
9.1 Setting switch points
uSelect [Parameter] > [Output configuration] > [oux] and set the switching signal channel for output
OUTx: [SSC1.1] or [SSC1.2].
uSelect [Parameter] > [SSC1.x].
Single point mode:
u[SSC1.x Config. ]Select [Mode] and set the switch point mode: [Single Point].
u[SSC1.x Param. ]Select [SP1] and set switch point 1.
u[SSC1.x Config. ]Select [Hyst] and set the hysteresis.
Two-point mode:
u[SSC1.x Config. ]Select [Mode] and set the switch point mode: [Two Point].
u[SSC1.x Param. ]Select [SP1] and set switch point 1.
u[SSC1.x Param. ]Select [SP2] and set switch point 2.
Window mode:
u[SSC1.x Config. ]Select [Mode] and set the switch point mode: [Window].
u[SSC1.x Param. ]Select [SP1] and set switch point 1.
u[SSC1.x Param. ]Select [SP2] and set switch point 2.
u[SSC1.x Config. ]Select [Hyst] and set the hysteresis.

MK59xx Cylinder sensor with IO-Link
16
The switch points SP1 and SP2 must have a minimum distance to the limits of the measuring
range (0 and 4000) in the size of the hysteresis. This restriction applies to each mode, so that it
is possible to switch between the switch point modes.
If the hysteresis is set to 0, the device adopts the [Auto] setting. This setting corresponds to a
hysteresis value of 100.
9.2 Teach functions
The three teach functions can be used to teach switch points for the switching signal channels SSC1.1
and SSC1.2 based on the current magnet position.
The application teach-in also allows automatic parameter setting of the stroke time monitoring (Ò
Stroke time monitoring parameter setting/21).
9.2.1 Switch point teach
In case of the switch point teach [Teach SPx], the switch points are taught individually for the selected
switch channel SSC1.x on the basis of the current magnet position. The switch point mode can be
freely selected.
In [Single Point] mode, the current measured value plus the set hysteresis is adopted as switch point
SP1, so that the switch point has a reserve when the cylinder is fully in the end position:
• SP1 = current measured value + hysteresis
In the [Window] mode and in the [Two Point] mode, the switch point SPx is set exactly to the current
measured value:
• SP1 = current measured value at end position 1
• SP2 = current measured value at end position 2
A switch point teach can also be carried out by means of manual configuration (Ò Setting
switch points/15).
Parameter setting:
uInstall the device in the groove.
uSelect [Parameter] > [Output configuration] > [oux] and set the switching signal channel [SSC1.x].
uSelect [Parameter] > [SSC1.x].
Single point mode:
u[SSC1.x Config. ]Select [Mode] and set the switch point mode: [Single Point].
uMove the cylinder to the required end position 1.
üCheck that the current measured value is within the limits of the measuring range.
uSelect [Parameter] > [Teach].
uSelect [TI Select] and set the switching signal channel [SSC1.x].
wThe following teach will be executed for the selected switching signal channel.
If [TI Select] = [all SSC] is selected, the teach is carried out for both switching signal channels
simultaneously.
uExecute command: [Teach SP1].
w[TI Result. State] shows the status of the teach process.
wThe switch point SP1 is set for the selected switching signal channel.
Window and Two Point Mode:
u[SSC1.x Config. ]Select [Mode] and set the switch point mode: [Window] or [Two Point].

Cylinder sensor with IO-Link MK59xx
17
uMove the cylinder to the required end position 1.
üCheck that the current measured value is within the limits of the measuring range.
uSelect [Parameter] > [Teach].
uSelect [TI Select] and set the switching signal channel [SSC1.x].
wThe following teach will be executed for the selected switching signal channel.
If [TI Select] = [all SSC] is selected, the switch point teach will be carried out for both switching
signal channels simultaneously.
uExecute command: [Teach SP1].
w[TI Result. State] shows the status of the teach process.
uMove the cylinder to the required end position 2.
üCheck that the current measured value is within the limits of the measuring range.
uExecute command: [Teach SP2].
w[TI Result. State] shows the status of the teach process.
wThe switch points SP1 and SP2 are set for the selected switching signal channel.
9.2.2 Section Teach
During [Section Teach], both switch points for the selected switching signal channel SSC1.x are taught
using the current magnet position in an end position and the switch point mode is automatically set to
[Window].
The switch points SP1 and SP2 are calculated with the current measured value and the set hysteresis:
• SP1 = current measured value - hysteresis
• SP2 = current measured value + hysteresis
Parameter setting:
uInstall the device in the groove.
uSelect [Parameter] > [Output configuration] > [oux] and set the switching signal channel [SSC1.x].
uMove the cylinder to the required end position.
üCheck that the current measured value is within the limits of the measuring range.
uSelect [Parameter] > [Teach].
uSelect [TI Select] and set the switching signal channel [SSC1.x].
wThe following teach will be executed for the selected switching signal channel.
If [TI Select] = [all SSC] is selected, the teach is carried out for both switching signal channels
simultaneously.
uSelect [Parameter] > [SSC1.x] > [SSC1.x Config. Hyst] and set the hysteresis.
uSelect [Parameter] > [Teach] > [Teach Custom].
uExecute command: [Section Teach].
w[TI Result. State] shows the status of the teach process.
wThe switch points SP1 and SP2 are set for the selected switching signal channel, the switch point
mode is [Window].

MK59xx Cylinder sensor with IO-Link
18
9.2.3 Teach In Application
During [Teach In Application], the switch point SP1 is automatically determined for the selected
switching signal channel SSC1.x: After moving the magnet back and forth three times, the sensor
detects the minimum and maximum measured value and thereby interprets the two end positions. The
switch point mode is automatically set to [Single Point] and the following settings are made:
• When teaching SSC1.1:
– [SSC1.1 SP1] = minimum measured value + hysteresis SSC1.1
– [SSC1.1 Config. Mode] = [High active]
– [ou1] = [SSC1.1]
– [Reference actuator runtime] and [tolerance actuator running time], see Stroke time monitoring
parameter setting (Ò/21).
• When teaching SSC1.2:
– [SSC1.2 SP1] = maximum measured value – 2x hysteresis SSC1.2
– [SSC1.2 Config. Mode] = [Low active]
– [ou2] = [SSC1.2]
– [Reference actuator runtime] and [ Tolerance actuator runtime], see Stroke time monitoring
parameter setting (Ò/21).
The minimum measured value and the maximum measured value must be at least twice the
value of hysteresis SSC1.1 and hysteresis SSC1.2 apart:
PDVmax - PDVmin ≥ (2x [SSC1.1 Config. Hyst] + 2x [SSC1.2 Config. Hyst]).
Parameter setting:
1x
2x
1x
2x
3x
PDV
04000
Min Max
3x
Fig.7: Example [all SSC]: LEDs signal
both end positions
uInstall the device in the groove.
üCheck that the current travel range of the cylinder is within the
limits of the measuring range.
uSelect [Parameter] > [Teach] > [Teach Single Value].
uSelect [TI Select] and set the switching signal channel
[SSC1.x].
wThe following teach will be executed for the selected
switching signal channel.
If [TI Select] = [all SSC] is selected, the teach is carried out
for both switching signal channels simultaneously.
uSelect [Parameter] > [SSC1.x] > [SSC1.x Config. Hyst] and set
the hysteresis.
uSelect [Parameter] > [Teach] > [Teach Custom].
uExecute command: [Teach In Application].
uMove the cylinder back and forth between the end positions
(min/max). The end positions must be reached alternately
three times each.
w[TI Result. State] shows the status of the teach process.
wThe switch point SP1 is set for the selected switching signal
channel, the switch point mode is [Single Point] and other
parameters are set automatically (see above).

Cylinder sensor with IO-Link MK59xx
19
If SSC1.1 is taught, only the minimum end position will be monitored.
If SSC1.2 is taught, only the maximum end position will be monitored.
If both switching signal channels are taught, both end positions will be monitored by opposite
switching behaviour and the display of both LEDs.
If the LEDs do not match the position of the cylinder after teaching, the signal direction must be
inverted before teaching (Ò Signal direction/19).
To increase the switching zones for the end positions, there are the following possibilities:
uIncrease the hysteresis before teaching or manually shift the switch points after teaching (Ò
Setting switch points/15). In both cases, the automatically set times [Reference actuator
runtime] and [Tolerance actuator runtime] are no longer correct and must be re-configured.
See Stroke time monitoring parameter setting (Ò/21).
9.3 Switch point logic
The switch point logic of the switching outputs can be set.
Selectable values:
• [High active] = normally open
• [Low active] = normally closed
uSelect [Parameter] > [SSC1.x].
uSelect [SSC1.x Config. Logic] and set the switch point logic for the switching signal channel
SSC1.x.
9.4 Switching delay
For both switching signal channels, a separate delay time can be set for the output to switch and to be
reset.
A switching delay can be useful in the following cases:
• The switch-on and switch-off delay can be used as a filter, for example, to block out magnetic
interference fields caused by short-time high currents.
• The switch-off delay can be used as a signal extension.
• With a switch-on delay, a signal can be faded out if the corresponding area is only passed over.
The signal will only be output when the application comes to a standstill in the corresponding area
or after a corresponding time.
Use in welding applications:
To suppress interference from high AC welding currents, the switch-on and switch-off delay
must be set to a value greater than 20 ms.
Parameter setting:
uSelect [Parameter] > [SSC1.x].
uSelect [SSC1.x Switch-On delay] and set the time for the switch-on delay.
uSelect [SSC1.x Switch-Off dela] and set the time for the switch-off delay.
9.5 Signal direction
Depending on the orientation of the magnet, the slope of the signal may vary.
With the following signal, the sensor behaves according to Function Class "Object Detection":
• The process data value (PDV) becomes smaller as the target approaches the sensor.

MK59xx Cylinder sensor with IO-Link
20
• The process data value (PDV) increases as the target moves away from the sensor.
uSet the signal direction so that the sensor behaves according to the specified function class
"Object Detection".
SN
Fig.8: Cylinder rod North Pole direction
The signal increases when the cylinder rod is
extended.
The sensor behaves according to the specified
function class "Object Detection".
NS
Fig.9: Cylinder rod South Pole direction
The signal decreases when the cylinder rod is
extended.
uInverting the signal direction.
1
2
Fig.10: Signal inversion
1: PDV
2: Magnet position
After a [Teach In Application], the LEDs for the switch point display may be inverted. By
inverting the signal direction before a [Teach In Application], the assignment of the LEDs can
also be changed.
Parameter setting:
uSelect [Parameter] > [Signal] > [Signal direction] to set the signal direction.
9.6 Output polarity of the switching outputs
The parameter [P-n] can be used to select whether the outputs are plus-switching or negative-
switching.
uSelect [Parameters] > [Setup].
uSelect [P-n] and set [PnP] or [nPn].
9.7 Output off
The output signal for output OUT1 or output OUT2 can be switched off in two ways:
• [OFF]: The physical output OUTx becomes highly resistive so that no signal can be output. The
status of the switching signal channels SSC1.x is still transmitted via the IO-Link interface.
• [Deactivated]: The switching signal channel is deactivated, i.e. the switching state is permanently in
the inactive state: With [High active] setting permanently "low", with [Low active] setting
permanently "high".
uCall up [Parameters] > [Output Configuration].
uSelect [oux] and set [OFF].