Festo SOPA User manual

SOPA
Air gap sensor
Festo SE & Co. KG
Ruiter Straße 82
73734 Esslingen
Deutschland
[phone]
www.festo.com
Operating instructions
8163013
2021-08d
[8163015]
Translation of the original instructions
© 2021 all rights reserved to Festo SE & Co. KG
1About this document
1.1 Purpose of the document
This document describes the use of the above-mentioned product. Certain
aspects of use are described in other documents and must be observed è 1.2
Applicable documents.
1.2 Applicable documents
All available documents for the product è www.festo.com/sp.
Document Table of contents
Description of air gap sensor SOPA Functional description, installation, commis-
sioning, servicing, description of the IO-Link
parameters, technical data
Tab. 1: Applicable documents
2 Safety
2.1 General safety instructions
–Only use the product in its original condition without unauthorised modifica-
tions.
–Only use the product if it is in perfect technical condition.
–Only use media in accordance with the specifications è Technical data.
–Observe labelling on the product.
–Note that changes to the switching status (EDIT mode) become effective imme-
diately.
2.2 Intended Use
The air gap sensor SOPA is intended for distance monitoring in a range of
20 … 200 µm. The distance measurement is performed using a non-contact pneu-
matic measuring process. This enables it to be used in harsh ambient conditions.
2.3 Training of qualified personnel
Work on the product may only be carried out by qualified personnel who can
evaluate the work and detect dangers. The qualified personnel have skills and
experience in dealing with electrical (open-loop) control technology.
2.4 UL/CSA certification
In combination with the UL inspection mark on the product, the information in this
section must also be observed in order to comply with the certification conditions
of Underwriters Laboratories Inc. (UL) for USA and Canada.
UL/CSA certification information
Product category code NRNT2/NRNT8
File number E253738
Considered standards UL 508
CSA22.2 No. 14
UL mark
Tab. 2: UL/CSA certification information
This device is intended to be used with a Class 2 power source or Class 2 trans-
former in accordance with UL1310 or UL1585.
As an alternative a LV/C (Limited Voltage/Current) power source with one of the
following properties can be used:
–This device shall be used with a suitable isolating source such that the max-
imum open circuit voltage potential available to the product is not more than
30 V DC and the current is limited to a value not exceeding 8 amperes meas-
ured after 1 minute of operation.
–This device shall be used with a suitable isolating source in conjunction with
a fuse in accordance with UL248. The fuse shall be rated max. 3.3 A and
be installed in the 30 V DC power supply to the device in order to limit the
available current.
3 Additional information
–Contact the regional Festo contact if you have technical problems
è www.festo.com.
–Accessories and spare parts è www.festo.com/catalogue.
–Device description file IODD è www.festo.com/sp.
4Product overview
4.1 Structure
4.1.1 Product design
12 3 4
5
6
7
8
9
10
11
121314
13
3
15
16
17
18 19 20
Fig. 1: Product design
1Supply port for supply pressure
2Sensor module (max. 4 modules
permitted in combination with
control module)
3Plug for electrical connection
4Display
5Edit button
6B pushbutton
7A pushbutton
8Label holder
9Pneumatic port for measuring
nozzle (outlet)
10 Supply port for operating pres-
sure
11 Vent screw (width across flats 14)
12 Mounting slides
13 Threaded sleeve (M4)
14 Blanking plug (M7)
15 Control module (optional)
16 Manual LED (green) – ready
indication for manual override
(SOPA-C..-H only)
17 Clean pushbutton (blow-out air)
(SOPA-C..-H only)
18 Status LED (yellow) – clean (blow-
out air)
19 Sense pushbutton (measuring air)
(SOPA-C..-H only)
20 Status LED (yellow) – sense
(measuring air)
4.1.2 Display components
1 2
3
4
5
6
Fig. 2: LCD display
1
Display of binary output OutA
2
Display of binary output OutB
3
Display of binary output OutC
4
4-digit alphanumeric display
5
Toolbar for functions
6
Bar graph

4.1.2.1 Symbols on the display
Symbol Description
Display for binary signals set/not set (in the example A, B: set - C: not set)1)
Threshold value comparator
Window comparator
[SP] Switching point
[SP][min] lower switching point
[SP][max] upper switching point
[HY] Hysteresis
[NO] Switching characteristic of N/O contact (normally open)
[NC] Switching characteristic of N/C contact (normally closed)
[min]/[max] minimum/maximum input value (in A/B/C)
[Delay] Switch-off delay for the numerical display
[Analogue] Settings for analogue output
[TeachIn] Teach mode active
[Option] Options for spurious pulse suppression (Off, 1, 2)
[Lock] Security code active (block to prevent unauthorised parameterisation)
[Spec] Special menu (SPEC) active
[di.] Activation/deactivation of the numerical display
Switching off the display backlight
[PnP]/[nPn] Switching the switching output
[P2-] Allocation of the switching output for Pin 2 with the binary signal OutB or OutC
[P4-] Allocation of the switching output Pin 4 with the binary signal OutA or OutC
[rP.] Replicate settings to another device
[F.] Set Analog output filter time τ for analogue output
[0..10]/[1.. 5] Switching the voltage output
[H.] Scaling the analogue output end value
[L.] Scaling the analogue output start value
[----] Numerical display is switched off
[IOL] Flashes 3x when Edit mode is blocked by IO-Link
[SUP.P] Error message: supply pressure is outside the set limits (SPmin/SPmax)
[CLER] Device has been reset to factory settings
Graphic display of the current distance-correlated value for InA and InB in relation
to the set switching point
–The bar graph for InA is always active.
–The bar graph for InB is only active if the binary signal OutB is assigned to the
switching output at Pin 2.
1) "A" flashes when IO-Link communication is active
Tab. 3: Symbols on the display
4.1.2.2 Bar graph on the display
Display Description
Segment at the bottom left and
[A] flash
–INFO mode active.
–7-segment display shows the input value InA.
Segment at the bottom left and
[A] light, [min] or [max] flash.
–SHOW mode active.
–7-segment display shows the minimum or
maximum value InA.
Segment at the bottom right
and [B] flash.
–INFO mode active.
–7-segment display shows the input value InB.
Segment at the bottom right
and [B] light, [min] or [max]
flash.
–SHOW mode active.
–7-segment display shows the minimum or
maximum value InB.
Segments at the bottom right
and left and [C] flash.
–INFO mode active.
–7-segment display shows the input value InC.
Segments at the bottom left
and right and [C] light, [min] or
[max] flash.
–SHOW mode active.
–7-segment display shows the minimum or
maximum value InC.
Marked segments light and
[Option] flashes.
–EDIT mode active.
–Special menu opens.
–7-segment display shows the set option.
Marked segments light and
[Lock] flashes.
–EDIT mode active.
–Special menu opens.
–7-segment display shows the security code.
Tab. 4: Special bar graphs on the display
4.2 Function
4.2.1 Functional Principle
The system consists of two sub-components. The control module provides a
compressed air preparation that is adapted to the supply pressure of the sensor
module, as well as the functionality for switching measuring and exhaust air. Up
to 4 sensor modules contain the sensory functions. The sensor modules can be
operated both individually and in combination with the control module.
12 3 4 5 6
7
8
910
Fig. 3: Configuration with a control module and two sensor modules
13/2-way valve (instrument air)
2Pressure regulator
33/2-way valve (exhaust air)
4Supply pressure
5Sensor modules (pneumatically
linked)
6Object (example)
7Air gap
8Measuring nozzles (1 per sensor
module)
9Vent screw
10 Supply port for operating pres-
sure
The compressed air flows from the sensor modules to the measuring nozzles. If
the object is very close to a measuring nozzle, the air gap is very small and only
a small amount of air flows through. As the object gets further away, the air gap
becomes larger and more air flows through. The change in flow rate is detected
by the sensor modules, converted into a distance-correlated value and displayed
(speed measuring method with ejector).
4.2.2 Operating statuses
Operating status Function
RUN mode –Basic status after the operating voltage is applied
–Numerical and graphic display of distance-correlated values (bar
graph)
–Display of measured values for supply pressure (in bar)
–Display of the signal statuses of the binary signals OutA, OutB, OutC
INFO mode –Display of input variables in the display
–Switch the display by pressing the A-pushbutton, B-pushbutton or A
and B-pushbuttons simultaneously.
SHOW mode –Display of current settings for the binary signals,
–Display and reset of the min/max values for the correlating distance
value and the supply pressure
EDIT mode –Setting or alteration of the parameters for the air gap sensor (switching
outputs, display)
TEACH mode –Teaching of the switching points for the correlating distance values
(transfer of the current value as switching threshold)
Tab. 5: Operating statuses
4.2.3 Switching outputs
4.2.3.1 Switching signals
12 3 4
Fig. 4: Binary signals and switching signals SOPA-...-2P/2N-...
1Sensing variable
2Input signal
3Binary signal
4Switching signal at sensor module
plug

1 2 3 4
Fig. 5: Binary signal, switching signal and analogue signal SOPA -...- PNLK -...
1Sensing variable
2Input signal
3Binary signal
4Switching signal at sensor module
plug
Switching output for OutA or OutB, analogue output
The switching outputs OutA and OutB and the analogue output are permanently
assigned to the distance input variable. The setting is made via teach-in, display
and buttons or via IO-Link (SOPA-...-PNLK-...).
Switching output for OutC
The switching output OutC is permanently assigned to monitoring the supply
pressure. The setting is made via the display and buttons or via IO-Link (SOPA-...-
PNLK-...). The binary signal at OutC acts as an enable signal for OutA and OutB.
If the supply pressure is outside the switching window of OutC, [SUP.P] appears
in the display. The sensor module is then unable to conduct a correct distance
monitoring procedure. It is not possible to teach the binary signals in this case.
4.2.3.2 Switching functions
The binary signals OutA and OutB can be configured independently of one
another. The threshold value switching function is assigned to the binary signal
OutA and OutB (distance input variable). The window comparator switching func-
tion is assigned to the binary signal OutC (supply pressure input variable).
–The switching element function 'normally closed contact' (N/C) or 'normally
open contact' (N/O) can be assigned to each binary signal.
–The switching point (SP) and hysteresis (HY) can be set for the binary signals
OutA and OutB. Only the switching points can be adjusted for OutC.
Threshold value comparator for distance monitoring (OutA and OutB)
Function N/O (normally open) N/C (normally closed)
In: Distance
Switching function:
–1 switching point (SP)
TEACH mode:
–1 teach-in point (TP = SP)
Tab. 6: Threshold value comparator with switching point (SP) and hysteresis (HY)
Window comparator for supply pressure monitoring (OutC)
Function N/O (normally open) N/C (normally closed)
In: supply pressure
Switching function:
–2 switching points (SPmin,
SPmax)
–IO-Link:
–SP1 = SPmin
–SP2 = SPmax
no TEACH mode
Tab. 7: Window comparator with switching point (SP) and hysteresis (HY)
Hysteresis
Hysteresis serves to suppress switching signals in the event of fluctuations
around the switching point (both sides in this case). The reset points function
as long as the value is within the hysteresis range.
–Upper reset point = switching point (SP) + hysteresis (HY)
–Lower reset point = switching point (SP) - hysteresis (HY)
12
3
4
Fig. 6: Sensing range with switching points
1
Range in which the switching
signals are suppressed in the
event of fluctuations around the
switching point (SP)
2
Object
3
Sensing distance
4
Measuring nozzle
5 Assembly
5.1 Assembling sensor module with control module
One control module can be connected to a maximum of 4 sensor modules.
1
2
Fig. 7: Mounting the sensor module
1
Blanking plug
2
Threaded sleeve
1. Loosen the blanking plugs with an internal hexagon key.
–Spanner size (A/F): 3 mm
2. Make sure the sealing ring on the sensor module is seated properly.
3. Press the sensor module lightly and tighten the threaded sleeve with an
internal hexagon key.
–A/F: 2.5 mm
–Tightening torque: 0.5 Nm
4. Tighten the blanking plugs on the last sensor module by hand.
–A/F: 3 mm
5.2 Mounting the sensor module
NOTICE
Damage due to Ingress of Foreign Matter or Liquids
In the event of an inappropriate measuring nozzle configuration or inappropriate
routing of the compressed air lines, foreign matter or liquids (e.g. condensation)
can enter the product and cause a malfunction or damage the product.
• Prevent the entry of foreign matter and liquids through design measures,
for example through a suitable configuration of the measuring nozzles.
Arrange the measuring nozzles
1. Place sensor module above the measuring nozzles è Fig. 3.
2. Use suitable tubing length: 0.5 … 8 m
5.2.1 H-rail mounting
1
Fig. 8: H-rail mounting
1
H-rail
1. Attach H-rail mounting to the H-rail.
2. Press the H-rail mounting in the direction of the arrow until the mounting slide
catches.
5.2.2 Plate mounting
Fig. 9: Plate mounting
1. Prepare threaded holes M5 è 12.3 Hole patterns.
2. Guide screws through the sensor and tighten. Use washers.
–Tightening torque: 0.8 Nm

5.2.3 Wall mounting
1 2 2
Fig.10
1
Adapter plate for wall mounting
2
Adapter plate
1. Mount the adapter plates on the wall.
–Hole patterns and dimensions è 12.3 Hole patterns.
2. Attach the sensor to the adapter plates and press until the fastening slide
locks.
5.3 Using sensor module without control module
The supply pressure can be fed from the left and the right-hand side.
1
1
Fig. 11: Attach the sensor modules
1
Connection for supply pressure
1. Mount the fitting on the supply pressure port.
–Thread M7, thread length: max. 5.5 mm
2. Seal the exposed port with a blanking plug.
–A/F: 3 mm
5.4 Accessories
Identifier Type
Connecting cable Straight socket NEBU-M12G5-K-...
Angled socket NEBU-M12W5-K-...
Differential pressure regulator LRLL-1/8-QS-6
Adapter plate for wall mounting1) SXE3-...-W...
Blanking plug B-M7
Push-in fitting QSM-M7-6-I
1) Included in the scope of delivery for SOPA-...-W-...
Tab. 8: SOPA accessories
6 Installation
6.1 Pneumatic Installation
12 2
Fig. 12: Pneumatic Installation
1Control module 2Sensor module
1. Insert tubing into push-in fitting.
–Outside diameter: 6 mm
2. Connect the supply port for the measuring nozzle to the corresponding meas-
uring nozzle è Fig. 3.
3. For operation with a control module: connect supply port for operating
medium to the compressed air source.
For operation without a control module: connect the supply port for the
supply pressure to the precision pressure regulator.
4. Ensure adequate exhaust at the vent screw connection (via vent screw or
differential pressure regulator (LRLL-1/8-QS-6) è Fig. 1.
Tubing at Standstill
• To avoid contamination of the measuring nozzles, remove the vent screw and
use this connection to supply purge air.
6.2 Electrical installation
WARNING
Risk of injury due to electric shock.
• For the electrical power supply, use only PELV circuits in accordance with IEC
60204-1/EN 60204-1 (Protective Extra-Low Voltage, PELV).
•Observe the general requirements of IEC 60204-1/EN 60204-1 for PELV circuits.
• Only use voltage sources that ensure a reliable electric separation from the
mains network in accordance with IEC 60204-1/EN 60204-1.
1. Use signal lines that are shorter than 30 m.
2. Configure binary outputs according to the wiring (only with PNLK sensor
modules).
–Tightening torque for the union nut at the plug connector: 0.3 Nm
6.2.1 PIN allocation and control module circuit diagrams
Pin Wire colour1) Allocation Plug
1 Brown (BN) Operating voltage +24 V DC M12, 5-pin
2 White (WH) Switch on signal input exhaust air (Clean)
3 Blue (BU) Operating voltage 0 V
4 Black (BK) Switch on measuring air signal input
(Sense)
5 Grey (GY) n.c = free (not connected)
1) When using the connecting cable from the accessories.
Tab. 9: Pin allocation for control module
SOPA-C..-H-...-2P-...1) SOPA-C..-H-...-2N-...
BN
BK
BU
+24 V
0 V
WH
PNP
1
4
3
2
5
Sense
Clean
BN
BK
BU
+24 V
0 V
WH
NPN
1
4
3
2
5
Sense
Clean
1) in combination with PNLK sensor modules
Tab. 10: Circuit diagrams for control module with manual override
SOPA-C-...-2P-...1) SOPA-C-...-2N-...
BK
BU
+24 V
0 V
WH
PNP
1
4
3
2
5
SenseClean
BN
BK
+24 V
0 V
WH
NPN
1
4
3
2
5
Sense
Clean
1) in combination with PNLK sensor modules
Tab. 11: Circuit diagrams for control module without manual override
6.2.2 PIN allocation and sensor module circuit diagrams
SOPA-...-2P/-2N
Pin Wire colour1) Allocation Plug
1 Brown (BN) Operating voltage +24 V DC M12, 5-pin
2 White (WH) Switching output for OutB or OutC (factory
setting)
3 Blue (BU) Operating voltage 0 V
4 Black (BK) Switching output for OutA
5 Grey (GY) n.c = free (not connected)
1) When using the connecting cable from the accessories.
Tab. 12: Pin allocation for sensor module
SOPA-...-2P-M12-... SOPA-...-2N-M12-...
BN
BK
BU
RL
+24 V
0 V
WH
P
RL
PNP
1
4
3
2
5
BN
BK
BU
+24 V
0 V
WH
P
NPN
1
4
3
2
5
RL
RL
Tab. 13: Circuit diagrams for sensor module
SOPA-...-PNLK
Pin Wire colour1) Allocation Plug
1 Brown (BN) Operating voltage +24 V DC M12, 5-pin
2 White (WH) Analogue output
3 Blue (BU) Operating voltage 0 V
4 Black (BK) Switching output for OutA or OutC (C/Q
line with IO-Link)
5 Grey (GY) n.c = free (not connected)
1) When using the connecting cable from the accessories.
Tab. 14: Pin allocation for sensor module

Ä
Ä
SOPA-...-PNLK-VB-... SOPA-...-PNLK-A-...
Tab. 15: Circuit diagrams for sensor module
7 Commissioning
7.1 Commissioning the sensor
• Switch on operating voltage.
ÄRUN mode is active.
To activate the RUN mode at any time, press and hold the Edit button for 3
seconds.
7.2 Setting switching point A
Switching output OutA is preset for distance monitoring. The switching point for
OutA must be set or taught manually.
Option 1: manually setting the switching point for OutA
1. Press the Edit button.
ÄEDIT mode is active. [OutA] flashes. Lock flashes with active security
blocking.
2. Enter the set security code using the A or B pushbutton.
3. Press the Edit button to confirm the selection.
Ä[SP] flashes.
4. Set switching point with the A or B pushbutton.
5. Press and hold the EDIT button for 3 seconds.
ÄRUN mode is active.
Option 2: teaching-in the switching point for OutA
1. Establish the desired switching distance between the object and the meas-
uring nozzle.
2. Press and hold the A pushbutton.
3. Also press the Edit button.
–[OutA] and [TeachIn] flash. The value is adopted as the switching
point.
–[Lock] flashes: security lock active. The value is buffered.
4. Enter the set security code using the A or B pushbutton.
5. Press the Edit button.
–[OutA] and [TeachIn] flash. The cached value is accepted as the
switching point.
–RUN mode is active.
7.3 Menu structure (EDIT mode)
Some menu options or setting values are not applicable depending on the product
variant and the selected switching function.
Fig. 13: EDIT mode menu structure
Key Meaning
Edit button
A or B pushbutton
bold Factory setting
1) Menu column only for PNLK-VB/A
2) Menu item only with PNLK-VB
3) Menu item only for PNLK-VB/A
4) Menu column and menu item only for 2P/2N
Tab. 16: Legend for menu structure EDIT mode

Ä
7.4 Displaying parameters (INFO/SHOW mode)
Requirement: the sensor is ready for operation (RUN mode).
1. Press A button, B button or A and B button.
ÄDisplay shows the relevant input value or an error number.
2. To display each of the following parameters, press the A button, B button or A
and B button .
3. At the end of the SHOW mode, the relevant minimum and maximum values
are displayed. To reset the display of the minimum and maximum values,
press the Edit button.
ÄRUN mode is active.
Fig. 14: Measured value indicator for SHOW mode
Key Meaning
Edit button
A button, B button or A and B button
Tab. 17: Legend for measured value indicator (RUN mode)
8Operation and use
8.1 Notes on operation
Type SOPA-C..
•To prevent contamination of the sensor modules and the measuring nozzles,
switch on the measuring air.
•Activate the exhaust air to clean contaminated measuring nozzles.
The switching status of the valves, which are integrated in the control module and
used for activating the measuring and exhaust air, is indicated by the status LED
[Sense] and [Clean].
Type SOPA-C..-H
•The electric manual override function for the measuring and exhaust air on
the control module can be deactivated by switching off the supply voltage for
the manual override.
ÄThe LED which indicates the ready status of the manual override is then
switched off.
8.2 Restoring Factory Settings (Restore)
By resetting to the factory settings, the current settings are lost. Note down
current settings before resetting.
1. Switch off operating voltage.
2. Press and hold the A pushbutton, B pushbutton and Edit button.
3. Switch on the operating voltage.
–[CLER] is displayed.
–The factory settings are restored . RUN mode is active.
8.3 Using the differential pressure regulator
In order to enable faster response times with low measuring distances or com-
pletely sealed measuring nozzles, a differential pressure regulator (LRLL-1/8-
QS-6) can be used instead of the vent screw. The valve function enables the
pressure to be exhausted significantly quicker than via the vent screw.
Connecting and checking the differential pressure regulator
1. Remove the vent screw (SW 14).
2. Mount the differential pressure regulator (LRLL-1/8-QS-6) n the connection
for the vent screw (è Fig. 3).
3. Press the CLEAN pushbutton (CLEAN = OFF) and then the SENSE pushbutton
(SENSE = ON) on the control module.
4. Make sure that there is not an object in the area of the measuring nozzles .
5. Turn the adjusting screw on the differential pressure regulator clockwise
(towards LOW) until air stops flowing from the differential pressure regulator.
6. Turn the adjusting screw on the differential pressure regulator anticlockwise
(towards HIGH) until air starts to flow from the differential pressure regulator.
Checking the settings of the differential pressure regulator
1. Seal the measuring nozzle (e.g. workpiece inserted).
2. Press the CLEAN key (CLEAN = OFF) on the control module.
ÄSensor module is supplied with operating pressure. [SUP.P] is displayed.
3. Press and hold the SENSE pushbutton (SENSE = ON) on the control module
until [SUP.P] is no longer displayed.
4. If the delay ([SUP.P] in the display) is too great, reduce the time by turning the
control valve (towards HIGH).
9 Maintenance and Care
1. Switch off the energy sources (operating voltage, compressed air).
2. Clean sensor with non-abrasive cleaning agents.
10 Malfunctions
10.1 Error messages
Indica-
tion on
display
Event
code
[hex]
G1) E2) S3) Error Remedy
[Er01] 0x5000 4 3 4 Sensor module defective Replace sensor module
[Er14] 0x180E 2 2 1 Supply pressure (InC)
outside the measuring
range (> 2 bar,
> 0.2 MPa); signal cannot
be evaluated
Observe the measuring
range è 12.1 Technical
data, general.
[Er17] 0x5111 4 3 3 Undervoltage in supply
voltage
Observe the voltage
range è 12.1 Technical
data, general.
[Er21] 0x1815 4 3 4 Short circuit/overload at
switching output OutA
(only for SOPA-...-PNLK)
Rectify short circuit/over-
load.
[SUP.P] 0x1815 2 2 1 Supply pressure
switched off
Apply supply pressure
è 12.1 Technical data,
general.
Exhaust air in the system Wait until the exhaust
air has completely dissi-
pated from the system.
Use/set differential pres-
sure regulator.
[Er.Co] IO-Link communication
errors
Check line OutA.
Check settings of the
device sensor.
[Er.Id] IO-Link device ID error,
devices are not identical
When replicating, use
sensors with the same
pressure range/type
(same device ID).
1) device status
2) IO-Link event type
3) diagnostic level
Tab. 18: Error messages, error codes, diagnostic levels and error description
10.2 Fault clearance
Fault description Cause Remedy
No indication on display Supply voltage not applied or
permitted operating voltage not
present
Switch on the supply voltage;
maintain the voltage range.
Electrical connections swapped
(incorrect polarity)
Connect the sensor module in
accordance with the plug pat-
tern.
Sensor module defective Replace sensor module.
Incomplete display Display faulty Replace sensor module.
Incorrect pressure indicator
for supply pressure (InC)
Sensor module contaminated Replace the sensor module and
operate the sensor only with fil-
tered compressed air è 12.1
Technical data, general.
Measured value indicator
(7-segment) flashes
Value InC (supply pressure)
outside the measuring range
(> 2 bar)
Maintain pressure range è 12.1
Technical data, general.
Overpressure above permitted
overload pressure (device dam-
aged)
Replace sensor module.
Outputs do not switch in
accordance with the set-
tings
Short circuit or overload at output Correct short circuit or overload.
Sensor module defective Replace sensor module.
Settings cannot be edited
(Lock)
Access protection active Enter security code or reset
device to factory setting.
Long response times after
the CLEAN function with vir-
tually closed or completely
closed measuring nozzles
Pressure reduction for the meas-
uring nozzle too slow
Replace the vent screw with a
differential pressure regulator
è 8.3 Using the differential
pressure regulator.
"Sensor ready for opera-
tion" display not showing
when using a differential
pressure regulator.
No pressure reduction for the
measuring nozzle
Adjust the differential pressure
regulator è 8.3 Using the differ-
ential pressure regulator.
Tab. 19
11 Disassembly
1. Switch off the energy sources (operating voltage, compressed air).
2. Disconnect the connections for the control module and the sensor modules.
3. Remove device.

Wall mounting/H-rail mounting
Fig. 15: Disassembly from the H-rail
• Lift the sensor and tilt it forward.
Plate mounting
Fig. 16: Disassembly from the wall
•Loosen the screws and remove the sensor.
12 Technical data
12.1 Technical data, general
SOPA-… -M-…-2P -M-…-2N -M-…-
PNLK
-C
General
Certification RCM Mark, c UL us - Recognized (OL) 1)1)
CE marking Declaration of Conformity è www.festo.com/sp
Input signal/measuring element
Detected variable Distance –
Measurement principle pneumatic –
Sensing range [µm] 20 … 2002)
Operating pressure [MPa] – 0.4 … 0.7
[psi] – 58 … 101.5
[bar] – 4 … 7
Supply pressure [MPa] 0.08 … 0.16 –
[psi] 11.6 … 23.2 –
[bar] 0.8 … 1.6 –
Nominal pressure [MPa] 0.12 0.5
[psi] 17.4 72.5
[bar] 1.2 5
Operating medium Compressed air in accordance with
ISO 8573-1:2010 [7:4:4]
Temperature of medium [°C] 0 … +50
Ambient temperature [°C] 0 … +50
Output, general
Repetition accuracy of switching point
–Sensing range
30 µm … 150 µm
[µm] ± 2.5 –
–Sensing range
20 µm … 200 µm
[µm] ± 5 –
Switching output
Switching output 2 x PNP 2 x NPN PNP/NPN,
switchable
–
Switching function
–OutA Threshold value comparator with vari-
able hysteresis
–
–OutB Threshold value compa-
rator with variable hyste-
resis
– –
–OutC Window comparator –
Switching element function N/C contact or N/O contact, switchable –
Temperature coefficient of
the switching point per 10 K
[%] typ. 2 –
Switch-on time è Fig. 17 and è Fig. 18 –
Output current [mA] £ 100 –
Voltage drop [V] £ 1.5 –
SOPA-… -M-…-2P -M-…-2N -M-…-
PNLK
-C
Analogue output
Analogue output
–SOPA-…-V – – 0 … 10 V –
–SOPA-…-B – – 1 … 5 V –
–SOPA-…-A – – 4 … 20 mA –
Distance characteristic curve
start value
– – 0 –
Distance characteristic curve
end value
– – 300 –
Rise time [ms] – – £ 22 –
Load resistance of current output
–SOPA-…-A [Ω] – – £ 500 –
Min. load resistance of voltage output
–SOPA-…-V [kΩ] ³ 20 –
Output, additional data
Short circuit current rating yes
Overload protection present
Electronic
Rated operating voltage [V DC] 24
Operating voltage [V DC] 15.0 … 30.0 20.0 … 30.0 22.8 … 26.4
No-load supply current [mA] £ 50 £ 10
Reverse-polarity protection for all electrical connections
Electromechanics
Connection type Plug
Connection technology M12x1 A-coded
Number of pins/wires 5
Tightening torque [Nm] 0.3
Cable length [m] £ 30
[m] £ 20 (for IO-Link)
Mechanical system
Mounting position any3)
Nominal diameter of meas-
uring nozzle
[mm] 2
Specified measuring nozzle
diameter
[mm] 1.5/2/2.5
Pneumatic port QS-6
Tube length [m] 0.5 … 8
Materials
Housing Reinforced PA Reinforced
PA/
anodised
aluminium
Keypad PA6 PET
Inspection window PA –
Sealing ring HNBR, FPM, NBR HNBR, NBR
Adapter plate SXE3-W – – – Chromated
steel
Display, operation
Display range InA/InB
(distance)
0 … 500, dimensionless
Display range InC
(supply pressure)4)
[bar] 0 … 2
Setting range threshold value
OutA/OutB (distance)
20 … 300, dimensionless
Setting range threshold value
OutC (supply pressure)4)
[bar] 0.5 … 1.9
Setting range hysteresis
OutA/OutB (distance)
3 … 20, dimensionless
Hysteresis OutC
(supply pressure)4)
[bar] 0.05
Immission, emission
Storage temperature [°C] –20 … +80
Degree of protection IP65 (in accordance with EN 60529)
Internal air consumption [Nl/min] – – – typ. 4.5
Measuring air consumption
(sense)
[Nl/min] typ. 15 (per measuring module) –
Exhaust air consumption
(clean)
[Nl/min] typ. 35 (per measuring module) –
Protection class III (in accordance with DIN VDE 0106-1)
Shock resistance 30 g acceleration with 11 ms duration (half-sine)
(in accordance with DIN EN 60068 Part 2-27)
Vibration resistance 5 g acceleration at 10 … 150 Hz / 35 mm
(in accordance with DIN EN 60068 Part 2-6)
1) type-specific è Identification on the product
2) When using a single sensor module with precision pressure regulator (0.12MPa/18psi/1.2bar), a sensing
range of up to 400 µm is possible.
3) Condensate must not accumulate in the sensor module.
4) Value is only shown in bar in the display.
Tab. 20: Technical data, general

IO-Link
Protocol version Device V1.1
Device V1.1 Smart sensor profile
Function classes Switching signal channel (SSC)
Process data variable (PDV)
Identification
Diagnostics
Teach channel
Communication mode COM2 (38.4 kbaud)
SIO mode support yes
Port class A
Process data width IN 2 bytes
Process data content IN 2 bit SSC (distance monitoring)
1 bit SSC (supply pressure monitoring)
10 bit PDV (distance)
Service data IN 14 bit (supply pressure)
Cycle time ³ 3 ms
Device ID
–SOPA-…-PNLK-VB 0xC0 (192)
–SOPA-…-PNLK-A 0xC1 (193)
IODD, IO-Link device description è www.festo.com/sp
Tab. 21: IO-Link
12.2 Diagrams
Response times for different tube lengths
Fig. 17: Typical response time t as a function of distance x after switching on the
instrument air (measuring nozzle: 2 mm)
Fig. 18: Typical response time t as a function of distance x after switching off the
exhaust air (measuring nozzle: 2 mm)
Displays for different tube lengths
Fig. 19: Influence of the tube length on the dimensionless display value
(measuring nozzle 2 mm)
Repetition accuracy of the switching point
Fig. 20: Repetition accuracy of the switching point [±µm] as a function of the
switching point distance x (measuring nozzle: 2 mm)
12.3 Hole patterns
Fig. 21: Hole patterns