SBN233 - Flow sensor IFM - Free user manual and instructions

USER MANUAL SBN233 IFM

Operating instructions

Mechatronic flow meter

SBY2xx

SBG2xx

SBN2xx

Contents

1 Preliminary note.... 4

1.1 Symbols used.... 4
1.2 Warnings.... 4

2 Safety instructions 5

2.1 Cybersecurity 5

3 Transport, handling and storage 6

4 Intended use 7

4.1 Application area 7

5 Function 8

5.1 Output OUT1 selection options 8
5.2 Output OUT2 selection options 8
5.3 IO-Link 8

6 Mounting 9

6.1 Process connection.... 9
6.2 Interference.... 9
6.3 Mounting accessories 10
6.4 Installation in case of medium containing dirt 10

7 Electrical connection 11
8 Operating and display elements.... 12
9 Menu.... 13

9.1 Menu overview 13
9.2 Main menu and submenus 13

10 Set-up 17

11 Parameter setting 18

11.1 Parameter setting via IO-Link 18
11.2 Parameter setting via the unit keys 19
11.3 Output functions.... 20

11.3.1 Switching signal 20
11.3.2 Analogue signal.... 21
11.3.3 Frequency signal.... 23

11.4 User settings.... 24

11.4.1 Standard unit of measurement 25
11.4.2 Process value for OUT1 and OUT2 25
11.4.3 Medium 25
11.4.4 Output polarity 25
11.4.5 Damping 26
11.4.6 Error behaviour of the outputs 26
11.4.7 Memory 27
11.4.8 Device reset 27
11.4.9 Lock/unlock 28

11.5 Display 28

11.5.1 Display standard process value 28
11.5.2 Display colour setting 28
11.5.3 Display update rate 29
11.5.4 Display orientation.... 29
11.5.5 Switch off the display.... 30

12 Operation.... 31

12.1 Process value display 31
12.2 Reading the parameter setting.... 31

13 Troubleshooting.... 32

13.1 Error messages.... 32

14 Maintenance, repair and disposal 34
14.1 Cleaning the device.... 34
15 Factory settings.... 35

1 Preliminary note

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

Warnings indicate the possibility of personal injury and damage to property. This enables safe product handling. Warnings are graded as follows:

WARNING

Warning of serious personal injury

▷ If the warning is not observed, fatal and serious injuries are possible.

CAUTION

Warning of minor to moderate personal injury

▷ If the warning is not observed, minor to moderate injuries are possible.

ATTENTION

Warning of damage to property

▷ If the warning is not observed, damage to property is possible.

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).
• Only use the product for permissible media.
• 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 Intended use

The unit monitors liquid media.

The unit detects the process categories volume flow (volumetric flow quantity/time) and medium temperature.

4.1 Application area

• Water
• Glycol solutions
• Industrial oils
• Cooling lubricants

ATTENTION

Frost formation of the medium.

▷ The sensor may be damaged.
▶ Ensure that the medium in the sensor does not freeze during operation and transport.

5 Function

• The unit detects the flow rate according to the principle of differential pressure by means of a permanent magnet and a measuring cell.
• As additional process value the unit detects the medium temperature.
• The unit can be operated in SIO mode (standard input-output) or in IO-Link mode.
• The unit displays the current process values.
• The unit generates two output signals according to the parameter setting.

5.1 Output OUT1 selection options

• Switching signal flow
• Switching signal temperature
  • Frequency signal flow
  • Frequency signal temperature
• IO-Link

5.2 Output OUT2 selection options

• Switching signal flow
• Switching signal temperature
• Analogue signal flow
  • Analogue signal temperature

5.3 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

6 Mounting

CAUTION

During installation or in case of a fault (e.g. housing damage) media under high pressure or hot media can leak from the system.

▷ Risk of injury caused by pressure or burns.
▶ Ensure that the system is free of pressure during installation.
▶ Ensure that no media can leak at the mounting location during installation.
▶ Equip the unit with suitable protection (e.g. cover) to avoid hazard to personnel from leaking media.

6.1 Process connection

▶ Avoid major changes of cross section on the inlet side.
▶ Fit the unit in the pipe in accordance with the flow direction (arrow) and tighten at the spanner flats.

Do not clamp the housing in a vice.

Fig. 1: Process connection

IN: Inlet

OUT: Outlet

Calming sections on the sensor's inlet or outlet side are not necessary.

The sensor can also prevent backflow.

The sensor head can be rotated by 360° .

6.2 Interference

▶ The following minimum distances must be adhered to:

Distance between the sensor and ferromagnetic materials	≥ 30 mm *
Distance between the sensor and constant / alternating fields	≥ 500 mm
Distance between the sensor axes for side-by-side installation	≥ 50 mm

* The pipe may consist of ferromagnetic material.

6.3 Mounting accessories

▶ If necessary, fasten the device on a mounting plate (not supplied) from underneath:

Fig. 2: Installation with mounting plate
1: threaded hole M8 (depth 6 mm) on the bottom side of the unit

6.4 Installation in case of medium containing dirt

▶ Use a 200-micron filter in front of the inlet (IN).
▶ Install sensor horizontally.
▶ Adhere to the inclination angle to the horizontal axis:

Fig. 3: Alignment in case of medium containing dirt

In clean medium, installation in vertical pipes is also possible.

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.

▶ Disconnect power.
▶ Connect the unit as follows:

Fig. 4: Wiring diagram

Pin	Assignment
1	L+
3	L-
4 (OUT1)	Switching signal flow Switching signal temperature Frequency signal flow Frequency signal temperatureIO-Link
2 (OUT2)	Switching signal flow Switching signal temperature Analogue signal flow Analogue signal temperature

Fig. 5: Circuit examples

1: 2 x positive switching
2: 2 x negative switching
3: 1 x positive switching / 1 x analogue
4: 1 x negative switching / 1 x analogue

8 Operating and display elements

Fig. 6: Operating and display elements

* l/min, m³/h, °C; SBN2xx: gpm, gph, °F

1: Switching status LED for OUT1
2: Switching status LED for OUT2
3: LEDs indicating the unit of measurement of the displayed process value *
4: 4-digit alphanumeric display
5: Keys for changing views and parameter setting

9 Menu

9.1 Menu overview

The figures in which the menus are displayed show the parameters that can be set on the unit by key input. These parameters and other functions are also available via the IO-Link interface.

Use the operating keys to navigate from the process value display to the main menu and from there to the submenus.

Fig. 7: Menu overview

9.2 Main menu and submenus

The figures in which the menus are displayed show the parameters that can be set on the unit by key input. These parameters and other functions are also available via the IO-Link interface.

The displayed parameters change when the factory setting is changed. The following menu displays show the maximum available parameters.

Main menu:

Parameter	Explanation
SPx	Switch point for switching output OUTx with hysteresis function
rPx	Reset point for switching output OUTx with hysteresis function
FHx	Upper limit for switching signal OUTx with window function
FLx	Lower limit for switching signal OUTx with window function
FSP1	Frequency start point for OUT1 = Lower measured value from which a frequency signal is provided (only for temperature measurement).
FEP1	Frequency end point for OUT1 = Upper measured value at which the frequency signal set under FrP1 is provided.
FrP1	Frequency signal which is provided when the upper measured value (MEW or FEP1) is reached.

Basic settings menu CFG:

* For SBN2xx devices

Parameter	Explanation
oux	Output function for hardware output OUTx
uni	Standard unit of measurement for flow
P-n	Output polarity for the switching outputs
dAP	Damping time in seconds for switching signal flow
dAA	Damping time in seconds for analogue signal flow
MEdi	Selection of the medium to be monitored
FOUx	Behaviour of output OUTx in case of an error
SELx	Process value for output OUTx

Memory MEM and display DIS menus:

Parameter	Explanation
Lo. T	Minimum measured temperature value
Hi. T	Maximum temperature value measured
colr	Colour configuration of the display
diS	Update rate and orientation of the display
SELd	Standard process value of the display

10 Set-up

After power on and expiry of the power-on delay time, the unit is in the normal operating mode. It carries out its measurement and evaluation functions and generates output signals according to the set parameters.

During the power-on delay time the outputs are switched as programmed:

• OFF with normally open function (Hno / Fno)
• OFF with normally closed function (Hnc / Fnc)
• OFF for frequency output (FRQ)
• 0 mA for current output (I)

When an IO-Link master is connected, the unit automatically switches from SIO mode (standard input-output) to IO-Link mode.

11 Parameter setting

Parameter setting can be carried out via the IO-Link interface or via the operating elements on the unit.

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.

Depending on the parameter setting, the parameters available in the menu may change.

11.1 Parameter setting via IO-Link

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.

Impact of the frequency output on the IO-Link connection:

If output OUT1 has been configured as a frequency output, IO-Link connection to the device is not possible.

▶ Corrective measures: Use the device keys to deselect the output function FRQ / frequency output.

Via IO-Link, all parameters can be set that are also accessible via the keys on the device. In addition, the functions described below are available.

Device information:

Unalterable device information is stored on the device. In addition, an application-specific tag can be assigned to the device.

Electronic lock:

The unit can be locked electronically to prevent unauthorised setting.

This lock prevents the settings from being changed via the keys on the unit.

If the device is locked via the IO-Link interface, it can only be unlocked via IO-Link.

11.2 Parameter setting via the unit keys

CAUTION

If the medium temperature is above 50\ °C ( 122\ °F ), parts of the housing can increase in temperature to over 65\ °C ( 149\ °F ).

▷ Risk of burns
▶ Do not touch the device with your hands.
▶ Use another object (e.g. a ballpoint pen) to carry out settings on the unit.

Parameter setting process in general:

Intention	Action
Change from the process value display to the main menu	●
Change to the submenu	Use ▼ to navigate to the submenu, e.g. EF, then ●
Select the required parameter	▲ or ▼
Change to the setting mode	●
Modify the parameter value	▲ or ▼ > 1 s
Apply the set parameter	●
Exit parameter setting without saving	▲ + ▼
Return to the next higher menu level (repeat several times to reach process value display)	▲ + ▼
Return to the process value display	>30 seconds (timeout)

If Loc is displayed when attempting to change a parameter value, the device keys are locked → Lock / Unlock.

If S. Loc is displayed, the sensor is permanently locked via software. This locking can only be removed with a parameter setting software.

11.3 Output functions

11.3.1 Switching signal

A switching signal can be output for process value monitoring. OUTx changes its switching state when the set switching limits are exceeded or not reached. You can choose between hysteresis and window function.

Hysteresis function:

1: Process value

t: Time

SP: Set point

rP: Reset point

HY: Hysteresis

Hno: Hysteresis function NO (normally open)

Hnc: Hysteresis function NC (normally closed)

Fig. 8: Hysteresis function

When the hysteresis function is set, the set point SP and the reset point rP are defined. The rP value must be lower than the SP value. The distance between SP and rP is at least 0.6 % of the final value of the measuring range (= hysteresis). If only the set point is changed, the reset point is changed automatically; the difference remains constant.

Window function:

1: Process value

t: Time

FH: Upper limit value

FL: Lower limit value

HY: Hysteresis

FE: Window area

Fno: Window function NO (normally open)

Fnc: Window function NC (normally closed)

Fig. 9: Window function

When set to the window function the upper limit value FH and the lower limit value FL are defined. The distance between FH and FL is at least 0.6 % of the final value of the measuring range. FH and FL have a fixed hysteresis of 0.25 % of the final value of the measuring range. This helps keep the switching status of the output stable if the flow rate varies slightly.

11.3.1.1 Parameter setting via unit keys: Switching signal

√ The standard unit of measurement is selected: EF > CFG > uni.
√ The process value for OUTx is selected: EF > CFG > SELx.
▶ Set the hysteresis function or window function.

Hysteresis function:

▶ Call up the menu EF > CFG.
▶ Select oux and set the switching signal: Hno or Hnc.
▶ Call up the main menu.
▶ Select SPx and set the measured value at which the output switches.
▶ Select rPx and set the measured value at which the output switches back.

Window function:

▶ Call up the menu EF > CFG.
▶ Select oux and set the switching signal: Fno or Fnc.
▶ Call up the main menu.
▶ Select FHx and set the upper limit of the window.
▶ Select FLx and set the lower limit of the window.

11.3.2 Analogue signal

The unit provides an analogue signal of 4...20 mA proportional to the process value.

If the measured value is outside the measuring range or in the event of an internal error, the current signal indicated in the following figure is provided.

For measured values outside the display range or in case of a fault, messages are displayed (UL, OL, Err).

Fig. 10: Output characteristics of the analogue output, flow

1: Analogue signal
MAW: Initial value of the measuring range
2: Flow
MEW: Final value of the measuring range
3: Measuring range
OL: Above the display range
4: Display range
Err: Error state
5: Detection zone

Fig. 11: Output characteristics of the analogue output, temperature

1: Analogue signal

MAW: Initial value of the measuring range

2: Temperature

MEW: Final value of the measuring range

3: Measuring range

OL: Above the display range

4: Display range

UL: Below the display range

5: Detection zone

Err: Error state

11.3.2.1 Parameter setting via unit keys: Analogue signal

√ The standard unit of measurement is selected: EF > CFG > uni.
√ The process value for OUT2 is selected: EF > CFG > SEL2.
▶ Select EF > CFG.
▶ Select ou2 and set the function: I (analogue signal 4...20 mA.).

11.3.3 Frequency signal

The device provides a frequency signal proportional to the process value.

The frequency signal is scalable:

• FrPx defines the frequency signal in kHz that is provided when the upper measured value is reached.
  The measuring range is scalable:
• FSPx defines the lower measured value from which a frequency signal is provided.
• FEPx defines the upper measured value at which the output signal has the frequency set under FrPx.

FSPx is only available for temperature measurement. Minimum difference between FSPx and FEPx = 20 % of the final value of the measuring range.

If the measured value is outside the measuring range or in the event of an internal error, the frequency signal indicated in the following figure is provided.

For measured values outside the display range or in case of a fault, messages are displayed (UL, OL, Err).

Fig. 12: Output characteristic of the frequency output, flow

1: Frequency signal
MAW: Initial value of the measuring range
2: Flow
MEW: Final value of the measuring range
3: Display range
FEP1: Frequency end point
4: Measuring range
FrP1: Frequency signal (kHz) for the upper measured value
5: Scaled measuring range
OL: Above the display range
Err: Error

Fig. 13: Output characteristic of the frequency output, temperature

1:	Frequency signal	FSP1:	Frequency start point
2:	Temperature	FEP1:	Frequency end point
3:	Display range	FrP1:	Frequency signal (kHz) for the upper measured value
4:	Measuring range	MAW:	Initial value of the measuring range
5:	Scaled measuring range	MEW:	Final value of the measuring range
Err:	Error	OL:	Above the display range

11.3.3.1 Parameter setting via unit keys: Frequency signal

√ The standard unit of measurement is selected: EF > CFG > uni.
√ The process value for OUT1 is selected: EF > CFG > SEL1.
▶ Select EF > CFG.
▶ Select ou1 and set FRQ.
▶ Call up the main menu.
▶ Select FSP1 and set the lower measured value at which 0 kHz is provided.

FSP1 is only available for temperature measurement.

▶ Select FEP1 and set the upper measured value at which the frequency set at FrP1 (= 100 %) is output.
▶ Select FrP1 and set the frequency for the upper measured value in kHz.

11.4 User settings

The chapter describes setting options for adaptation to the customer-specific application.

11.4.1 Standard unit of measurement

A unit of measurement can be selected with which the process value is shown in the display by default. All further parameter settings are based on this unit.

Selectable values:

• uni for flow: l/min, m³/h (SBN2xx: gpm, gph)

▶ Set the unit of measurement before configuring further parameters.

11.4.1.1 Parameter setting via the device keys: Standard unit of measurement

▶ Call up the menu EF > CFG.
▶ Select uni and set the unit of measurement.

11.4.2 Process value for OUT1 and OUT2

For both outputs, you can select which process value is to be monitored. All further parameter settings are based on this selection.

Selectable values:

• FLOW: Flow
  • TEMP: Temperature

11.4.2.1 Parameter setting via unit keys: Process value OUT1 and OUT2

▶ Call up the menu EF > CFG.
▶ Select SELx and set process value for output OUTx.

11.4.3 Medium

The sensor provides various characteristic curves for the respective media. They can be selected via the MEdl parameter.

Selectable values:

• H2O: Water
• OIL: ➕ Technical data at ifm.com.
• OIL2: ➕ Technical data at ifm.com.

11.4.3.1 Parameter setting via the device keys: Medium

▶ Call up the menu EF > CFG.
▶ Select MEdl and set the medium.

11.4.4 Output polarity

The output polarity is set via the parameter P-n.

The setting affects both switching outputs.

• PnP: The switching output is positive switching.
• nPn: The switching output is negative switching.

11.4.4.1 Parameter setting via unit keys: Output polarity

▶ Call up the menu EF > CFG.
▶ Select P-n and set PnP or nPn.

11.4.5 Damping

Damping can be used to set a delay time during which the unit does not output erratically occurring measured value changes.

The set delay time stabilises the output signals.

This concerns the outputs, the display and the process value transmission via the IO-Link interface.

Selectable values:

• dAP = damping time for switching signal, display and IO-Link signal (63 % rise time)
• dAA = damping time for the analogue signal (10...90 % rise time).

The damping time is added to the response time of the sensor (→ Technical data).

The signals UL and OL are defined under consideration of the damping time.

Measured value damping only has an effect on the measured variable flow.

11.4.5.1 Parameter setting via unit keys: Measured value damping

▶ Call up the menu EF > CFG.
▶ Select dAP and set the damping time in seconds ( τ -value 63 %).
▶ Select dAA and set a damping time in seconds.

11.4.6 Error behaviour of the outputs

The response of the OUTx output in case of a fault can be set via the parameter FOUx. Depending on the selected output function, the following signals are provided in case of a fault:

• Switching signal:
• On: the output switches ON in case of a fault.
  – OFF: the output switches OFF in case of a fault.
• OU: the output switches irrespective of the fault as defined with the parameters.

- Analogue signal:

• On: The analogue signal goes to 22 mA.
• OFF: The analogue signal goes to 3.5 mA.
• OU: the analogue signal still corresponds to the measured value.

- Frequency signal:

• On: the frequency signal goes to 130% of FrPx.
  – OFF: the frequency signal goes to 0 kHz.
• OU: the frequency signal still corresponds to the measured value.

11.4.6.1 Parameter setting via unit keys: Error behaviour of the outputs

▶ Call up the menu EF > CFG.
▶ Select FOUx and set the error behaviour for OUTx: On, OFF, OU.

11.4.7 Memory

The unit stores the maximum and minimum measured process values.

Selectable values:

• Lo. T: Minimum value memory for temperature
• Hi. T: Maximum value memory for temperature

It makes sense to delete the memories as soon as the unit operates under normal operating conditions for the first time.

11.4.7.1 Parameter setting via unit keys: Memory

Show memory:

▶ Go to the EF > MEM menu.
▶ Select Lo. T or Hi. T to read the highest or lowest process value measured.

Clear memory:

▶ Go to the EF > MEM menu.
▶ Select Lo. T or Hi. T.
▶ Briefly press ●.
▶ Keep ▲ or ▼ pressed. ▷ ---- is displayed.
▶ Briefly press ●.

11.4.8 Device reset

The unit can be reset to factory settings.

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

11.4.8.1 Parameter setting via unit keys: Device reset

▶ Select the EF menu.
▶ Select rES.
▶ Briefly press ●.
▶ Keep ▲ or ▼ pressed. ▷ ---- is displayed.
▶ Briefly press ●. ▷ The unit carries out a reboot.

11.4.9 Lock / unlock

The unit can be locked electronically to prevent unauthorised setting.

This lock prevents the settings from being changed via the keys on the unit.

Factory setting: not locked.

11.4.9.1 Parameter setting via unit keys: lock / unlock

Lock:

▶ Make sure that the unit is in the normal operating mode.
▶ Press ▲ and ▼ simultaneously for 10 s until Loc is displayed.

Unlock:

▶ Make sure that the unit is in the normal operating mode.
▶ Press ▲ and ▼ simultaneously for 10 s until uLoc is displayed.

11.5 Display

11.5.1 Display standard process value

Use the SELd parameter to choose which process value is shown in the display by default.

Selectable values:

• FLOW: the display shows the current process value for flow.
  • TEMP: the display shows the current process value for temperature.

11.5.1.1 Parameter setting via unit keys: Display standard process value

▶ Call up the menu EF > DIS.
▶ Select SELd and set the standard process value.

11.5.2 Display colour setting

The colour of the characters in the display can be set via the parameter coLr.

With the set parameters rED (red) and GrEn (green), the display is permanently set to one colour. If the parameters rxou and Gxou are set, the colour of the characters changes depending on the process value:

	OUT1	OUT2	Colour change to...
Parameter setting	r1ou	r2ou	red
	G1ou	G2ou	green

When the hysteresis function is set, the colour changes if the process value is above the set point:

Fig. 14: Hysteresis function, coLr = rxou

MAW: Initial value of the measuring range

MEW: Final value of the measuring range

SPx: Switch point

When the window function is set, the colour changes if the process value is within the window section:

Fig. 15: Window function, coLr = Gxou

MAW: Initial value of the measuring range

MEW: Final value of the measuring range

FLx: Lower limit of the window section

FHx: Upper limit of the window section

11.5.2.1 Parameter setting via unit keys: Display colour setting

▶ Call up the menu EF > DIS.
▶ Select coLr and define the colour of the characters in the process value display.

11.5.3 Display update rate

The refresh rate of the display can be set via the parameter diS.

Selectable values:

• d1: fast (every 50 ms)
• d2: medium (every 200 ms)
• d3: slow (every 600 ms)

11.5.3.1 Parameter setting via unit keys: Display update rate

▶ Call up the menu EF > DIS.
▶ Select diS and set the update rate.

11.5.4 Display orientation

The text in the display can be rotated for better readability.

11.5.4.1 Parameter setting via unit keys: Display orientation

▶ Call up the menu EF > DIS.
▶ Select diS and set the display rotation simultaneously with the update rate:
• rd1: every 50 ms and rotated by 180°
• rd2: every 200 ms and rotated by 180°

• rd3: every 600 ms and rotated by 180°

11.5.5 Switch off the display

The process value display can be permanently switched off in the operating mode.

Pressing a key switches the display on. In case of inactivity, the display switches off again after a few seconds.

The LEDs remain active even if the display is deactivated. Error messages are displayed even if the display is deactivated.

11.5.5.1 Parameter setting via unit keys: Display off

▶ Call up the menu EF > DIS.
▶ Select diS and set OFF.

12 Operation

12.1 Process value display

It is possible to switch between different process value indications during operation:

▶ Press ▲ or ▼.
▷ The display changes between the standard indication with set standard unit of measurement and other views.
▷ After 30 s, the unit returns to the standard display.

Fig. 16: Process value display

1: Standard display as set under SELd and uni.

Example: SELd = FLOW and uni = m³/h

2: Further view. The LED indicates in which unit the current process value is displayed.

Example: temperature in ° C.

12.2 Reading the parameter setting

▶ Briefly press ●.
▶ Press ▼ to select the parameter.
▶ Briefly press ●.
▷ The currently set value is displayed for 30 s. Then the unit returns to the process value display.

13 Troubleshooting

The unit has many self-diagnostic options. It monitors itself automatically during operation.

Warnings and error states are displayed even if the display is switched off. Error indications are also available via IO-Link.

The status signals are classified according to NAMUR recommendation NE107.

If several diagnostic events occur simultaneously, only the diagnostic message of the event with the highest priority is displayed.

If the measured temperature value fails, the process value for flow rate is still available.

Additional diagnostic functions are available via IO-Link ➕ IO-Link interface description at documentation.ifm.com.

Impact of the frequency output on the IO-Link connection:

If output OUT1 has been configured as a frequency output, IO-Link connection to the device is not possible.

▶ Corrective measures: Use the device keys to deselect the output function FRQ / frequency output.

13.1 Error messages

Display	Problem/remedy
Err	Unit faulty / malfunction▶ Replace the unit.
None Display	• Supply voltage too low▶ Check the supply voltage.• Display switched off▶ Check whether setting diS = OFF and change setting if necessary.
Loc	Setting keys on the unit locked, parameter change rejected. ▶ Unlock the unit using the unit keys.
C. Loc	Setting buttons on the unit temporarily locked, parameter setting via IO-Link communication active. ▶ Finish parameter setting via IO-Link communication.
S. Loc	Setting keys locked via parameter setting software, parameter change rejected. ▶ Unlock the unit via IO-Link interface using the parameter setting software.
UL	• Value below the minimum value of the temperature display range: temperature value between -32...-43 °C (-26...-46 °F). ▶ Check the temperature range.
OL	• Temperature display range exceeded: temperature value between 122...133 °C (252...272 °F). ▶ Check the temperature range.• Flow display range exceeded: flow rate between 120...130 % of the final value of the measuring range. ▶ Adjust the flow range.
SC1	Switching status LED for OUT1 flashing: short circuit OUT1. ▶ Check switching output OU1 for short circuit or excessive current.
SC2	Switching status LED for OUT2 flashing: short circuit OUT2. ▶ Check switching output OUT2 for short circuit or excessive current.
SC	Switching status LEDs for OUT1 and OUT2 flashing: short circuit OUT1 and OUT2. ▶ Check switching outputs OUT1 and OUT2 for short-circuit or excessive current.

14 Maintenance, repair and disposal

The operation of the unit is maintenance-free.

Only the manufacturer is allowed to repair the unit.

▶ After use dispose of the device in an environmentally friendly way in accordance with the applicable national regulations.

14.1 Cleaning the device

If measurement errors occur because of an insufficient filtration cleaning may be required:

▶ Unscrew sensor head.
▶ Remove float and spring.
▶ Clean the inside of the float, spring and housing, e.g. by means of compressed air.
▶ Before re-assembly check O-ring for damage. If necessary, replace and grease.

▶ After cleaning install components again.

▶ Tighten sensor head with a tightening torque of 20 Nm.

▶ To restore the measurement accuracy, press the float until you feel a mechanical stop using something non-magnetic, e.g. a finger and hold for at least 2 seconds.

Fig. 17: Cleaning the sensor

1: Sensor head

3: Spring

5: Non-magnetic tool

2: Float

4: O-ring

6: Mechanical stop

15 Factory settings

Parameter	Factory setting	User setting
SP1 / FH1 (FLOW)	20 %
rP1 / FL1 (FLOW)	19 %
SP1 / FH1 (TEMP)	12 °C (54 °F)
rP1 / FL1 (TEMP)	11 °C (52 °F)
FrP1 (FLOW)	10 %
FrP1 (TEMP)	10 %
FSP1 (TEMP)	-10 °C (14 °F)
FEP1 (TEMP)	100 °C (212 °F)
FEP1 (FLOW)	100 %
SP2 / FH2 (FLOW)	40 %
rP2 / FL2 (FLOW)	39 %
SP2 / FH2 (TEMP)	34 °C (94 °F)
rP2 / FL2 (TEMP)	33 °C (92 °F)
ou1	Hno
ou2	I
uni	l/min (gal/min)
P-n	PnP
dAP (FLOW)	0.1
dAA (FLOW)	0
Medl	H2O
FOU1	ou
FOU2	ou
SEL1	FLOW
SEL2	FLOW
coLr	rEd
diS	d2
SELd	FLOW