MFH221 - Industrial sensor IFM - Free user manual and instructions

USER MANUAL MFH221 IFM

Operating instructions

Pressure-resistant position sensor for hydraulic

cylinders

MFH2xx

Contents

1 Preliminary note.... 3

1.1 Symbols used.... 3

2 Safety instructions 4

2.1 Cybersecurity 4

3 Transport, handling and storage 5

4 Items supplied 6

5 Intended use 7

5.1 Application area 7

5.2 Restriction of the application area.... 7

6 Function 8

6.1 Measuring principle 8

6.2 Signal range 8

6.3 Switching signal 8

6.4 Application examples for position monitoring 11

6.4.1 Fine adjustment of the end position 11

6.4.2 Linear measurement with conical switching cam 11

6.4.3 Monitoring a high pressure valve 11

6.5 IO-Link 12

7 Installation.... 13

8 Electrical connection 14

9 Operating and display elements.... 15

10 Parameter setting 16

10.1 Output polarity of the switching outputs.... 16

10.2 Logic.... 16

10.3 Deactivating the output 17

10.4 Configuring switch points manually.... 17

10.5 Switching delay 17

10.6 Teach functions.... 18

10.6.1 Switch point teach.... 18

10.6.2 Window teach 19

10.7 Diagnostics 19

10.7.1 Switching cycle monitoring.... 20

10.7.2 Operating hours counter 21

10.7.3 Power cycles.... 21

10.7.4 Internal temperature.... 21

10.8 Resetting the device.... 22

10.9 Identification.... 22

10.9.1 Device information 22

10.10 Parameter setting examples 23

10.10.1 Setting the end position.... 23

10.10.2 Monitoring the end position 23

10.10.3 Displacement measurement in the end position.... 24

11 Operation.... 26

12 Troubleshooting.... 27

13 Maintenance, repair and disposal 28

14 Factory settings.... 29

1 Preliminary note

You will find instructions, technical data, approvals, accessories and further information using the QR code on the device / packaging or at documentation.ifm.com.

1.1 Symbols used

Requirement
Instruction
Reaction, result

bold Designation of keys, buttons or indications

→ Cross-reference without link

→ Cross-reference with link

Important note

Non-compliance may result in malfunction or interference

Information

Supplementary note

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 (→ 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.

2.1 Cybersecurity

Installation

The device is suitable for operation in a secure environment according to IEC 62443-1-1.

The device was designed for operation behind a firewall.

▶ Carry out a risk assessment of the system according to IEC 62443-1-1.
▶ Take measures to ensure physical security.

Operation

▶ Observe the security functions described in the product documentation and the recommendations for their use.

Maintenance

- ▶ Back up system configuration and system data in accordance with your company’s change management processes.

Decommissioning

▶ Ensure that no sensitive information can fall into unauthorised hands.
▶ Always reset the system settings to the factory settings before decommissioning the device.

3 Transport, handling and storage

▶ Store the device in its original packaging.
▶ When the device is to be stored again, use the original packaging.
▶ Otherwise, provide unused connections with either a mating connector or a protective cap and pack the device in suitable packaging.
▶ Observe the permissible ambient conditions for the device during storage (→ Technical data).

4 Items supplied

• Pressure-resistant position sensor for hydraulic cylinders
- Lock nut

The following are additionally required for installation and operation:

Open-end wrench with 10 mm across flats and open-end wrench with 17 mm across flats; not included in scope of supply.

5 Intended use

The device continuously monitors the position of a ferromagnetic target without contact.

The device uses the magnetic measuring principle, but does not require an external damping magnet.

5.1 Application area

The device is used to detect the position of the piston in hydraulic cylinders.

The device is installed in the wall of a hydraulic cylinder housing using a mounting bush, and its purpose is to detect the position of a switching cam on the piston rod.

5.2 Restriction of the application area

The device is not approved for use in hazardous areas.

Incorrect measurements may be caused by the following environmental conditions:

• Ferromagnetic environment (elements made of iron).
• Alternating electromagnetic fields.
• Permanent magnets or magnetised cylinder parts.

6 Function

The device provides the following functions and signals them with a switching signal:

• Monitoring the piston position in hydraulic cylinders
• Diagnostic functions:

• Switching cycles counter ➞ 20
• Operating hours counter ➕ 21
• Switch-on operations ➞ 21
• Internal temperature ➞ 21

Two physical switching outputs are available.

• The switching channel SSC1.1 is permanently assigned to the output OUT1.
• The switching channel SSC1.2 is permanently assigned to the output OUT2.

6.1 Measuring principle

The device detects a change in the magnetic field caused by the approach of a ferromagnetic or magnetic target.

Fig. 1: Measuring principle

1: Magnetic field without target
2: Ferromagnetic target
3: Magnetic field with target

When using a standard target made of iron (12x12x1 mm) and approaching along the axis, the calculated output signal is linear and proportional to the position of the target.

Ferromagnetic materials such as iron, permanent magnets and magnetic fields in the vicinity of the device and of the encoder magnet can influence and falsify the signal.

6.2 Signal range

The device outputs a measured value PDV1, which depends on the position of the target in the range from 0 to 200. This value is dimensionless, but proportional to the position of the target.

When using a standard target, the measuring range is 2 mm. The shape and material of the target can influence the size of the measuring range and its linearity.

6.3 Switching signal

The device provides digital switching signals via switching signal channels (SSC = Switching Signal Channel).

The device has 2 digital switching channels SSC1.1 and SSC1.2.

The switching channels can be analysed via the IO-Link interface and the hardware outputs.

The switching signal channels are permanently assigned to the physical hardware outputs:

• SSC1.1 to OUT1
• SSC1.2 to OUT2

The parameters for each switching signal channel can be set individually.

During parameter setting, the switch points, mode and logic of the switching signal channels are set.

Mode

You can choose between the following modes according to the IO-Link smart sensor profile – Function Class “Object Detection”:

• Deactivated
• Single Point Mode
• Two Point Mode
• Window Mode

Logic

By setting the logic High active or Low active, you can specify which value the switching signal channel has in the active state:

• High active: The switching signal channel is “high” in the active state (= ON = normally open = 1)
• Low active: The switching signal channel is "low" in the active state (= OFF = normally closed = 0)

The following figures show the status of the switching signal channels depending on the mode, logic and process data value (PDV).

Deactivated

If the Deactivated mode is set for a switching signal channel, the switching signal channel will permanently have the following value regardless of the process value:

• For logic High active: permanently “low”.
• For logic Low active: permanently "high".

Fig. 2: Deactivated / High active

Fig. 3: Deactivated / Low active

Single-point mode

Only one switch point SP1 is manually set or taught.

The reset point SP1+H results from the switch point and the set hysteresis.

When teaching, the switch point is set above the taught process value TP1 by the hysteresis.

Fig. 4: Single Point Mode / High active

Fig. 5: Single Point Mode / Low active

H: Hysteresis

SP1: Switch point

TP1: Teach point

TP1+H: Switch point during teach (= SP1)

SP1+H Reset point

H: Hysteresis

SP1: Switch point

TP1: Teach point

TP1+H: Switch point during teach (= SP1)

SP1+H Reset point

Two-point mode

A switch point SP1 and a switch point SP2 are manually set or taught.

The position of the switch points is freely selectable: SP1 can be below or above SP2. The higher switch point is the reset point. In the example shown, SP2 is the switch point (setpoint) and SP1 is the reset point.

When teaching, the switch point is set directly to the respective taught process value TPx.

The hysteresis will be ignored in Two Point Mode.

Fig. 6: Two Point Mode / High acitve

SP1: Switch point 1

SP2: Switch point 2

TP1: Teach point 1 (= SP1)

TP2: Teach point 2 (= SP2)

Fig. 7: Two Point Mode / Low active

SP1: Switch point 1

SP2: Switch point 2

TP1: Teach point 1 (= SP1)

TP2: Teach point 2 (= SP2)

Window mode

Two switch points SP1 and SP2 are manually set or taught.

The two switch points define a window area.

The position of the switch points is freely selectable: SP1 can be below or above SP2. The lower switch point is the lower limit value, the higher switch point is the upper limit value of the window area.

When teaching, the switch point is set directly to the respective taught process value TPx.

When the process data value enters the window area, the status of the switching signal channel changes when the switch points are exceeded/not reached.

When the process data value leaves the window area, the status of the switching signal channel changes when the switch point plus/minus the hysteresis is exceeded/not reached.

Fig. 8: Window Mode / High active

H: Hysteresis

SP1: Switch point 1

SP2: Switch point 2

TP1: Teach point 1 (= SP1)

TP2: Teach point 2 (= SP2)

Fig. 9: Window Mode / Low active

H: Hysteresis

SP1: Switch point 1

SP2: Switch point 2

TP1: Teach point 1 (= SP1)

TP2: Teach point 2 (= SP2)

6.4 Application examples for position monitoring

6.4.1 Fine adjustment of the end position

The signal strength of the device depends on how much of the sensing face is covered by the switching cam on the cylinder piston.

Fig. 10: Fine adjustment of the end position
A: Full coverage
B: Low coverage

C: No coverage

At full coverage (A), the measured value PDV1 is low, at low coverage (B), it is higher. The switch point for an end position can be set in the application based on the actual coverage. This means that installation-related tolerances etc. are not taken into account, resulting in a more precise switching signal in the end position.

To prevent a hard stop of the piston or application in the end position, the switch point can be set before the mechanical end position (C).

By monitoring the measured value PDV1, signs of wear or contamination in the application can be detected. For this purpose, the signals from (A) and (B) must be compared and the switching signals set accordingly.

6.4.2 Linear measurement with conical switching cam

The measuring range can be increased using a conical switching cam.

Due to the inclined geometry, the sensing face coverage or distance between the sensing face and the target changes less when the piston rod moves accordingly.

Fig. 11: Linear measurement with conical switching cam

When the device is used in a brake cylinder, the extended measuring range can be used to detect whether the brake is applied and how far the piston extends. This can be used to determine how worn the brake linings are.

6.4.3 Monitoring a high pressure valve

The device can be used in various high pressure applications. For example, on a high-pressure valve, the device can monitor the closing function and detect blockages or contamination.

6.5 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

7 Installation

1: Device
2: Welding bush

The device can be adjusted to the piston rod via the insertion depth.

Do not screw in the device too deeply to avoid mechanical damage to the device, piston rod and cylinder.

For installation with a fixed end stop, use devices from the M9H series.

1: Device
2: Piston rod
3: Piston with switching cam

▶ Make sure that the piston rod is in the end position to be detected.
▶ Screw the device up to the end stop.
▶ Unscrew the device half a turn ( 0.5 mm) to avoid mechanical damage.
▶ Tighten the fixing nut (tightening torque → data sheet).

For fine adjustment, also note the following: Fine adjustment of the end position ➕ 11.

8 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.

▶ Disconnect power.
▶ Connect the unit as follows:

Fig. 12: Wiring diagram

Pin	Assignment
1	L+
3	L-
4 (OUT1)	switching output or IO-Link
2 (OUT2)	Switching output

Fig. 13: Circuit examples

1: 2 x positive switching
2: 2 x negative switching

9 Operating and display elements

LED yel- Only for devices with cable outlet low:

The yellow light of the LED signals that the switching channel SSC1 is in the "high" state.

• If the switching channel is set to the logic High active, the LED lights up when the switching channel is in the active state.
• If the switching channel is set to the logic Low active, the LED goes out when the switching channel is in the active state.

The switching status LEDs can be set to double flashing with the command Locator in order to be able to identify the device in the system.

In the event of a short circuit or hardware error in the device, the switching status LED will flash with 5 Hz until the error is eliminated.

10 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.

▶ Ensure 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.

The device parameters can be set via the IO-Link interface in the following ways, for example:

• Parameter setting via a suitable parameter setting software, e.g. ifm moneo|configure
  • Parameter setting via a PLC
  • Parameter setting via an IIoT application

Requirements for parameter setting via the IO-Link interface:

√ The Input Output Device Description (IODD) for the device in case of parameter setting via a parameter setting software, see documentation.ifm.com
√ The IO-Link interface description (PDF) for the device in case of parameter setting via a PLC or IIoT application, see documentation.ifm.com

√ An IO-Link master

▶ Connect the IO-Link master to the parameter setting software, the PLC or the IIoT application.

▶ Connect the device to a suitable free port of the IO-Link master.

▶ Set the port of the IO-Link master to the IO-Link operating mode.

▷ The device changes to the IO-Link mode.

▶ Change the parameter settings in the software.

▶ Write the parameter settings to the device.

Support for system integration and parameter setting via IO-Link:

→ Manual of the parameter setting software (e.g. moneo)
Explanations and startup packages at ifm.com/cnt/io-link-system-integration.

When the hydraulic cylinder is replaced, it may also be necessary to adapt the device settings.

10.1 Output polarity of the switching outputs

The parameter P-n can be used to select whether the switching outputs are positive switching or negative switching.

▶ Select Parameters > Basic settings.
▶ Select P-n and set PnP or nPn.

10.2 Logic

The logic of the switching channels can be set.

Selectable values:

• High active = normally open

• Low active = normally closed
  ▶ Select Parameter > SSC1.x.
  ▶ Select SSC1.x Config. Logic and set the switch point logic for the switching signal channel SSC1.x.

10.3 Deactivating the output

The output signal for the output can be deactivated as follows:

Deactivated: The switching channel is deactivated, i.e. the switching status is permanently in the inactive state: With High active setting permanently “low”, with Low active setting permanently “high”.

▶ Select Parameter > SSC1.x.
▶ Select SSC1.x Config. Mode and set Deactivated.

10.4 Configuring switch points manually

▶ During configuration, set the mode before defining the other parameters such as switch point and hysteresis.

Single point mode:

▶ Select SSC1.x Config. Mode and set the Single Point mode.
▶ Select SSC1.x Param. SP1 and set switch point 1.
▶ Select SSC1.x Config. Hyst and set the hysteresis.

Two-point mode:

▶ Select SSC1.x Config. Mode and set the Two Point mode.
▶ Select SSC1.x Param. SP1 and set switch point 1.
▶ Select SSC1.x Param. SP2 and set switch point 2.

Window mode:

▶ Select SSC1.x Config. Mode and set the Window mode.
▶ Select SSC1.x Param. SP1 and set switch point 1.
▶ Select SSC1.x Param. SP2 and set switch point 2.
▶ Select SSC1.x Config. Hyst and set the hysteresis.
▶ Save the changed parameter settings on the device.

All setpoints and reset points, with or without hysteresis, must be within the setting range of 5 to 195. This restriction applies to each mode, so that it is possible to switch between the modes.

If the hysteresis is set to 0, the device adopts the Auto setting. This setting corresponds to a hysteresis value of 10.

10.5 Switching delay

For both switching channels, a separate delay time can be set.

Parameter setting:

▶ Select Parameter > SSC1.x.

▶ SSC1.x Delay. Select Switching delay and set the time for the switching delay.
▶ SSC1.x Delay. Select Reset delay and set the time for the reset delay.

10.6 Teach functions

The teach functions can be used to teach switch points for the switching channels SSC1.1 and SSC1.2 based on the current target position.

10.6.1 Switch point teach

In case of the switch point teach Teach SPx, the switch points are taught individually for the selected switching channel SSC1.x on the basis of the current target position. The 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 piston is fully in the end position:

- SP1 = current measured value + hysteresis → 9

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
• SP2 = current measured value

Keep the measured value PDV1 constant during the teach process to ensure a safe switch point.

The switch points can also be set manually without a teach command.

Parameter setting:

▶ Install the device in the cylinder.
▶ Select Parameter > SSC1.x.

Single point mode:

▶ Select SSC1.x Config. Mode and set the Single Point mode.
▶ Select SSC1.x Config. Hyst and set the hysteresis.
▶ Move the piston to the desired position for switch point 1.
▶ Ensure that the current measured value is within the limits of the measuring range.
▶ Select Parameter > Teach.
▶ Select Teach Select and set the switching output SSC1.x.
▶ Save the changed parameter settings on the device.
▶ Execute the command: Teach SP1.
▷ The current value plus hysteresis is adopted as switch point SP1.
▷ Teach Result. State shows the status of the teach process.
▷ The switch point SP1 is set for the selected switching channel.

Window and Two Point Mode:

▶ Select SSC1.x Config. Mode and set the mode: Two Point or Window.
▶ Move the piston to the desired position for switch point 1.
▶ Ensure that the current measured value is within the limits of the measuring range.

▶ Select Parameter > Teach.
▶ Select Teach Select and set the switching output SSC1.x.
▶ Save the changed parameter settings on the device.
▶ Execute the command: Teach SP1.
▷ Teach Result. State shows the status of the teach process.
▷ The switch point SP1 is set for the selected switching channel.
▶ Move the piston to the desired position for switch point 2.
▶ Ensure that the current measured value is within the limits of the measuring range.
▶ Execute the command: Teach SP2.
▷ Teach Result. State shows the status of the teach process.
▷ The switch point SP2 is set for the selected switching channel.

10.6.2 Window teach

In case of window teach Teach window, both switch points are taught for the selected switching channel SSC1.x on the basis of the current piston position.

In the Window mode, the switch point SPx is set exactly to the current measured value:

• SP1 = current measured value – teach window size/2
  • SP2 = current measured value + teach window size/2

The switch points for the window teach can also be set manually. Other window widths are possible with manual configuration.

Parameter setting:

▶ Install the device in the cylinder.
▶ Select Parameter > SSC1.x.
▶ Select SSC1.x Config. Mode and set the mode: Fenster.
▶ Move the piston to the desired position for switch point 1.
▶ Ensure that the current measured value is within the limits of the measuring range.
▶ Select Parameter > Teach.
▶ Select Teach Select and set the switching output SSC1.x.
▶ Save the changed parameter settings on the device.
▶ Execute the command: Teach Fenster.
▷ Teach Result. State shows the status of the teach process.
▷ The switch points SP1 and SP2 are set for the selected switching channel.

10.7 Diagnostics

The device provides the following diagnostic information via the IO-Link interface:

• Switching cycle monitoring ➞ 20
• Operating hours counter ➞ 21
- Switch-on operations ➞ 21
• Internal temperature ➞ 21

Diagnostic cases are:

• Overflow SCT1.1: The threshold value for the switching cycles counter SCT1.1 has been reached.
• Overflow SCT1.2: The threshold value for the switching cycles counter SCT1.2 has been reached.
- Overload
- Underload

10.7.1 Switching cycle monitoring

The device stores the number of switching cycles on the switching channels SSC1.1 (counter SCT1.1) and SSC1.2 (counter SCT1.2). Depending on the set counting condition, individual switching edges or piston strokes (two switching edges) will be counted.

The counter value can be read via the IO-Link interface.

When using the IO-Link interface, a data bit is set when a set switching cycle threshold is reached. This change of state applies for a defined hold time or until the counter is reset.

10.7.1.1 Configuring counters

The switching cycle counters SC1 and SC2 are configured separately.

Parameter	Explanation
SC-EnhCtr_HoldTime. S1CTSC-EnhCtr_HoldTime. S2CT	Hold time:Duration of the changed switching status when reaching the switching cycle threshold in milliseconds. Requirement: SC-EnhCtr_AutoReload. SCx = On.
SC-EnhCtr_AutoReload. SC1SC-EnhCtr_AutoReload. SC2	Counter reset:OFF: The output switches when the switching cycle threshold is reached. The counter continues counting until it is reset: Reset counter to zero ➔ 21. On: The output switches when the switching cycle threshold is reached. The switching status remains active for the set hold time SC-EnhCtr_HoldTime. SCx. Then the switching output is reset. The counter continues to count during the hold time.
SC-EnhCtr_Count Condition. SC1SC-EnhCtr_Count Condition. SC2	Count condition:Rising: The counter only adds up switching cycles when changing from low to high (0 → 1). Falling: The counter only adds up switching cycles when changing from high to low (1 → 0). Both: The counter adds up the switching cycles on both edges.► Note the logic.
SC-EnhCtr_Threshold. SC1SC-EnhCtr_Threshold. SC2	Switching cycle threshold:Number of switching cycles at counter SCx at which a switching signal is triggered or the SCx bit is set.

Tab. 1: Parameters for switching cycle monitoring

Parameter setting:

▶ Select Parameters > Counter configuration.
▶ Select SC-EnhCtr_HoldTime. SCx and set the hold time for counter SCx.
▶ Select SC-EnhCtr_AutoReload. SCx and set the counter reset for counter SCx.
▶ Select SC-EnhCtr_Count
Condition. SCx and set the counting condition for counter SCx.
▶ Select SC-EnhCtr_Threshold. SCx and set the switching cycle threshold for counter SCx.

▶ Save the parameter set on the device.

10.7.1.2 Read counter values

▶ Select Parameters > Counter configuration.
▶ Select SC-EnhCtr. SC1 and read the current value for counter SC1.
▶ Select SC-EnhCtr. SC2 and read the current value for counter SC2.

10.7.1.3 Reset counters

Reset both counters:

▶ Select Parameters > Counter configuration.
▶ Execute the command: Reset SSC counter.
▷ Both switching cycles counters are set to 0.

10.7.2 Operating hours counter

The operating hours since the first set-up are stored by the unit.

The operating hours counter is stored retentively every hour. If the operating voltage is interrupted, the time since the last full hour will be lost.

The maximum counter reading of 2,000,000 h will be retained when it has been reached (no overflow).

The current value can be read via the IO-Link interface.

▶ Select Diagnosis.
▶ Select Operating hours and read value.

10.7.3 Power cycles

The device stores the switch-on operations since the first set-up.

The maximum counter reading of 2,000,000 will be retained when it has been reached (no overflow).

▶ Select Diagnosis.
▶ Select Power cycles and read value.

10.7.4 Internal temperature

The sensor measures the internal temperature.

The internal temperature may be higher than the actual temperature due to self-heating of the processor.

Due to the installation in a metallic cylinder, the temperature of the device is strongly coupled to the temperature of the cylinder housing. If the cylinder becomes excessively hot due to wear or overload, this trend can be detected with the device.

▶ Select Diagnosis > Temperature.
▶ Select Internal temperature and read value.

The Internal_Temperature_HiLo. Lo and Internal_Temperature_HiLo. Hi parameters display extreme values, showing the lowest and highest internal temperatures detected by the device, respectively. In case of voltage failures and resets, these extreme values are retained.

10.8 Resetting the device

The unit can be reset in 2 ways:

- Application Reset: reset of the parameter settings. The following is reset:

– All changed application-specific parameters and teaches.

- Back-to-box: reset to factory settings. The following is reset:

– All changed application-specific parameters and teaches.

- All writeable unit identification parameters such as Application Specific Tag, Function Tag or Location Tag.

– Diagnostic parameters, status parameters, events.

After the back-to-box reset, the device suspends communication and measurement operation until the voltage is interrupted. The IO-Link data storage is not triggered.

We recommend documenting your own settings in the chapter Factory setting before carrying out a reset.

Parameter setting:

▶ Select Parameters > Basic settings.
▶ Execute command: Application reset or Back-to-Box.
▶ Disconnect and reconnect the power supply.
▷ The device carries out a reboot.

10.9 Identification

10.9.1 Device information

Unalterable device information is stored on the unit. This includes:

• Product name
• Product family
• Manufacturer
• Manufacturer ID
• Device ID
• Serial number
  • Hardware / firmware revision
• Description

In addition, further freely definable tags with a maximum length of 32 characters can be assigned to the unit via the IO-Link interface using suitable parameter setting software. This includes:

• application-specific tag
• function tag
• location tag

Read/edit device information:

▶ Select Identification.
▶ Read device information or edit editable parameters.

10.10 Parameter setting examples

10.10.1 Setting the end position

When installed, the device offers the option of electronic final adjustment. This compensates for tolerances and enables precise setting of the switch point in the end position.

A

B

Fig. 14: Setting the end position

A switching channel is used to roughly detect the end position, enabling the machine or system to operate robustly and reliably using this switching signal.

The second switching channel is precisely adjusted to the end position so that any soiling or wear can be detected.

In the following example, switching channel SSC1.1 is set for rough detection of the end position. Switching channel SSC1.2 is used for exact detection.

Fig. 15: Example: Setting the end position

Parameter setting:

▶ Install and connect the device.
▶ Move the piston to the end position to be detected.
▶ Read the current process data value PDV and write it down (100 in the example).
▶ Select SSC1.1 Config Mode and set Single Point.
▶ Manually set the switch point SP1 for switching channel SSC1.1: SSC1.1 Param. SP1 = 100 (PDV) + 30 (tolerance for a robust switch point) = 130.
▶ Select SSC1.2 Config Mode and set Window.
▶ Manually set the switch point SP1 for switching channel SSC1.2: SSC1.2 Param. SP1 = 100 (PDV) - 10 (tolerance) = 90.
▶ Manually set the switch point SP2 for switching channel SSC1.2: SSC1.2 Param. SP2 = 100 (PDV) + 10 (tolerance) = 110.
▶ Save the parameter set and write it to the device.

10.10.2 Monitoring the end position

The device can be used to detect the spool in a hydraulic valve. This allows you to check whether the valve is actually in the corresponding position.

Fig. 16: Monitoring the end position of the hydraulic valve

In the example, the plunger covers the sensing face of the device when the valve is closed. This state is indicated via SSC1.1. SSC1.2 indicates when the valve is not securely closed.

Moreover, SSC1.2 is not to flicker every time the plunger passes over the sensing face. It is only to be activated when the valve remains in the corresponding area for more than 500 ms.

Fig. 17: Example: Monitoring the end position

▶ Install and connect the device.
▶ Set the valve to its closed position.
▶ Read the current process data value PDV1 and write it down (30 in the example).
▶ SSC1.1 Config. Select Mode and set Window.
▶ Set the switch point SP1 manually: SSC1.1 Param. SP1 = 30 (PDV) - 10 (tolerance) = 20.
▶ Set the switch point SP2 manually: SSC1.1 Param. SP2 = 30 (PDV) + 10 (tolerance) = 40.
▶ SSC1.2 Config. Select Mode and set Single point.
▶ SSC1.2 Config. Select Logic and set Low active.
▷ SSC1.1 switches when the plunger is detected.
▷ SSC1.2 switches when the plunger is not detected.
▶ Calculate and set switch point 1: SSC1.1 Param. SP1 = 30 (PDV) + 10 (tolerance) = 40
▶ SSC1.2 Delay. Select Switching delay and set 500.
▷ The device only switches after 500 ms.

10.10.3 Displacement measurement in the end position

The measuring range of the device can be extended using a chamfered switching cam. The chamfer acts as a transmission from a transverse to a longitudinal movement. The transmission ratio is set by the angle of the chamfer.

In case of installation in the vicinity of brakes, pay attention to the maximum permissible temperature of the device.

A

B

Fig. 18: Brake pad wear measurement

In the example, the device is installed at the end of a brake cylinder.

The cylinder has a chamfer of 2x10 mm. This results in a transmission ratio of 5, meaning that when the cylinder moves by 1 mm, the sensor signal changes by approx. 20 inc.

The device is configured in its new condition or after the brake pads have been replaced.

SSC1.1 issues a warning when the brake pads are worn by 3 mm, SSC1.2 issues a warning when the brake pads are worn by 5 mm.

Fig. 19: Example: Displacement measurement in the end position

Parameter setting:

▶ Install and connect the device.
▶ Actuate the brake with the new brake pads.
▶ Read the current process data value PDV and write it down (40 in the example).
▶ SSC1.1 Config. Select Mode and set Single point.
▶ Select SSC1.1 Config. Logic and set Low active. The output switches when the brake cylinder moves too far away.
▶ Manually set the switch point SP1 for switching channel SSC1.1: SSC1.1 Param. SP1 = 40 (PDV) + 60 (wear limit 1 = 3 mm x 20inc/mm) - 10 (hysteresis) = 90.
▶ SSC1.2 Config. Select Mode and set Single point.
▶ Select SSC1.2 Config. Logic and set Low active. The device switches when the brake cylinder is not detected.
▶ Manually set the switch point SP1 for switching channel SSC1.2: SSC1.2 Param. SP1 = 40 (PDV) + 100 (wear limit 2 = 5 mm x 20inc/mm) - 10 (hysteresis) = 130.
▶ Save the parameter set and write it to the device.

The reset point is taught according to the “Object Detection” function class and the Low active logic.

11 Operation

After power-on and the required parameter setting the device is in the operating mode. It carries out its measurement and evaluation functions and generates output signals according to the set parameters.

▶ Check whether the device operates correctly.

12 Troubleshooting

Display / problem	Cause / remedy
The yellow switching status LED flashes at 5 Hz.	Short circuit or overload at OUT1 and/or OUT2. ► ▶ Remove the short circuit.
Error after switch point Teach SPx: The piston is in the end position and a switch point teach has been carried out. When the piston returns to the end position, the device will not switch.	With the switch point teach, the switch point is shifted by the hysteresis to the teach point. Depending on the signal direction, the teach point is therefore outside the operating range. ► ▶ Manually reduce the switch point by 2 times the hysteresis.
IO-Link event “block parameter setting error”: The device does not accept the values for configuring a switching channel.	The switch points SP1 and/or SP2 were set outside the setting range. However, in modes with hysteresis, the switch points must be further within the limits of the setting range by at least the value of the hysteresis. ► ▶ Reduce hysteresis. ► ▶ Shift the switch points further inwards.

13 Maintenance, repair and disposal

The unit is maintenance-free.

Only the manufacturer is allowed to repair the unit.

▶ In case of return shipment, ensure that the unit is free from soiling, especially from dangerous and toxic substances.
▶ For transport only use appropriate packaging to avoid damage of the unit.
▶ After use, dispose of the unit in an environmentally friendly way in accordance with the applicable national regulations.

14 Factory settings

Parameter	Factory setting	User settings
Output polarity	PnP
SSC1.1 Param. SP1	165
SSC1.1 Param. SP2	50
SSC1.1 Config. Logic	High active
SSC1.1 Config. Mode	Single point
SSC1.1 Config. Hyst1)	10
SSC1.1 Switching delay	0 ms
SSC1.1 Reset delay	0 ms
SSC1.2 Param. SP1	100
SSC1.2 Param. SP2	50
SSC1.2 Config. Logic	High active
SSC1.2 Config. Mode	Single point
SSC1.2 Config. Hyst	10
SSC1.2 Switching delay	0 ms
SSC1.2 Reset delay	0 ms
SC EnhCtr_AutoReload. SCx	OFF
SC EnhCtr_HoldTime. SCx	10000 ms
SC EnhCtr_Threshold. SCx	100
SC EnhCtr_Count Condition. SCx	Rising