Festo SOPA User manual

8118612
SOPA
Air gap sensor
8118612
2020-04
[8118614]
Manual

Translation of the original instructions
2 Festo — SOPA — 2020-04

3Festo — SOPA — 2020-04
1 About this document................................................................................................... 6
1.1 Applicable documents.................................................................................................. 6
2 Safety........................................................................................................................... 6
2.1 General Safety Instructions.......................................................................................... 6
2.2 Intended Use................................................................................................................ 6
2.3 Training of qualified personnel..................................................................................... 6
2.4 UL/CSA Certification..................................................................................................... 6
3 Further information..................................................................................................... 7
4 Service..........................................................................................................................7
5 Product overview......................................................................................................... 8
5.1 Configuration................................................................................................................ 8
5.1.1 Product design........................................................................................................8
5.1.2 Display components............................................................................................... 9
5.1.2.1 Symbols on the display...........................................................................................9
5.1.2.2 Bar graph on the display.........................................................................................11
5.2 Function....................................................................................................................... 11
5.2.1 Operating statuses................................................................................................. 11
5.2.2 Switching outputs...................................................................................................12
5.2.2.1 Switching signals....................................................................................................12
5.2.2.2 Switching functions................................................................................................ 13
5.2.3 Functional Principle................................................................................................ 14
5.2.4 Analogue output..................................................................................................... 15
5.2.5 Filter....................................................................................................................... 16
5.2.6 Replicating parameters...........................................................................................16
5.2.7 Minimum/maximum value......................................................................................16
5.2.8 Security code..........................................................................................................16
5.2.9 Graphic distance monitoring...................................................................................16
6 Assembly..................................................................................................................... 17
6.1 Measuring Nozzles....................................................................................................... 17
6.2 Assembling sensor module with control module.......................................................... 19
6.3 Mounting the sensor module........................................................................................ 19
6.3.1 H-rail Mounting.......................................................................................................20
6.3.2 Plate mounting....................................................................................................... 20
6.3.3 Wall Mounting........................................................................................................ 21
6.4 Use sensor module without control module................................................................. 21
6.5 Accessories.................................................................................................................. 22
7 Installation.................................................................................................................. 22
7.1 Pneumatic Installation.................................................................................................. 22
7.2 Electrical installation.................................................................................................... 23
7.2.1 PIN allocation and control module circuit diagrams................................................ 23
Table of contents

7.2.2 PIN allocation and sensor module circuit diagrams................................................ 24
8 Commissioning.............................................................................................................25
8.1 Displaying parameters (INFO/SHOW mode).................................................................. 25
8.2 Menu structure (EDIT mode)..........................................................................................27
8.3 Setting the switching characteristics of the binary signals (EDIT mode)........................ 28
8.4 Setting analogue output with…-PNLK-A (EDIT mode).................................................. 29
8.5 Setting analogue output with…-PNLK-VB (EDIT mode)................................................29
8.6 Teaching the switching points (TEACH mode)................................................................30
8.7 Setting the spurious pulse suppression (EDIT mode).................................................... 30
8.8 Switch off display (EDIT mode)......................................................................................31
8.9 Changeover of binary output OutA (EDIT mode)............................................................ 31
8.10 Setting the allocation of the switching output at Pin 2 (EDIT mode).............................. 31
8.11 Setting the allocation of the switching output at Pin 4 (EDIT mode).............................. 32
8.12 Setting security code (EDIT mode).................................................................................32
8.13 Replicating parameters (EDIT mode)............................................................................. 32
9 IO-Link interface description........................................................................................33
9.1 General information, IO-Link..........................................................................................33
9.2 Identification parameters.............................................................................................. 34
9.3 IO-Link default parameters............................................................................................35
9.4 IO-Link default commands.............................................................................................36
9.5 Smart sensor profile parameters................................................................................... 36
9.6 Device-specific parameters............................................................................................39
9.7 IO-Link teach-in............................................................................................................. 40
9.8 Block parameterisation................................................................................................. 42
9.8.1 Block parameterisation for Distance monitoring SSC1 (OutA).................................42
9.8.2 Block parameterisation for Distance monitoring SSC2 (OutB)................................ 43
9.8.3 Block parameterisation for Supply pressure monitoringSSC3 (OutC)..................... 43
9.8.4 Block parameterisation for analogue output.......................................................... 43
9.9 Process data IN..............................................................................................................43
9.10 Correction factors.......................................................................................................... 44
9.11 Diagnostics IO-Link........................................................................................................44
9.11.1 Status messages.................................................................................................... 44
9.11.2 Diagnostic levels.................................................................................................... 44
10 Operation and use........................................................................................................ 45
10.1 Notes on operation........................................................................................................45
10.2 Restoring Factory Settings (Restore)............................................................................. 45
10.3 Using the differential pressure regulator....................................................................... 46
11 Maintenance and Care..................................................................................................46
12 Malfunctions................................................................................................................ 46
12.1 Error messages..............................................................................................................46
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12.2 Fault clearance............................................................................................................. 47
13 Disassembly................................................................................................................ 48
14 Disposal........................................................................................................................49
15 Technical data............................................................................................................. 50
15.1 Technical data, general................................................................................................. 50
15.2 Diagrams...................................................................................................................... 54
15.3 Hole patterns................................................................................................................ 56
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1 About this document
1.1 Applicable documents
All available documents for the product èwww.festo.com/sp.
2 Safety
2.1 General Safety Instructions
– Only use the product in original status without unauthorised modifications.
– 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 immediately.
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 pneumatic measuring process. This enables it to be
used in harsh ambient conditions.
2.3 Training of qualified personnel
Installation, commissioning, maintenance and disassembly should only be conducted by qualified per-
sonnel.
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 (USA)
NRNT8 (Canada)
File number E253738
Considered standards UL 508, 17th edition
C22.2 No. 14-2005
UL mark
Tab. 1 UL/CSA Certification Information
This device is intended to be used with a Class 2 power source or Class 2 transformer in accordance
with UL1310 or UL1585.
About this document
Festo — SOPA — 2020-046

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 maximum 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 measured 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 Further information
– Accessories èwww.festo.com/catalogue.
– Spare parts èwww.festo.com/spareparts.
4 Service
Contact your regional Festo contact person if you have technical questions èwww.festo.com.
Further information
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5 Product overview
5.1 Configuration
5.1.1 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 pressure
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)
Fig. 1 Product design
Product overview
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5.1.2 Display components
1Display of binary output OutA
2Display of binary output OutB
3Display of binary output OutC
44-digit alphanumeric display
5Toolbar for functions
6Bar graph
Fig. 2 LCD display
5.1.2.1 Symbols on the display
Symbol Description
Display of binary signals set/not set (in 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 contact (normally open)
[NC] Switching characteristic of 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
Product overview
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Symbol Description
[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. 2 Symbols on the display
Product overview
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5.1.2.2 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. 3 Special bar graphs on the display
5.2 Function
5.2.1 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
Product overview
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Operating status Function
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 (switch-
ing outputs, display)
TEACH mode – Teaching of the switching points for the correlating distance values
(transfer of the current value as switching threshold)
Tab. 4 Operating statuses
5.2.2 Switching outputs
5.2.2.1 Switching signals
1Sensing variable
2Input signal
3Binary signal
4Switching signal at sensor module plug
Fig. 3 Binary signals and switching signals SOPA-...-2P/2N-...
Product overview
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1Sensing variable
2Input signal
3Binary signal
4Switching signal at sensor module plug
Fig. 4 Binary signal, switching signal and analogue signal SOPA -...- PNLK -...
Switching output for OutA or OutB, analogue output
The switching outputs OutA and OutB and the analogue output are permanently assigned to the dis-
tance input variable. The setting is made via teach-in, display and pushbuttons 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 pushbuttons 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.
5.2.2.2 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 function is assigned to the binary signal OutC (supply pressure input
variable).
– The switching element function 'normally closed contact' (NC) or 'normally open contact' (NO) 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.
Product overview
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Threshold value comparator for distance monitoring (OutA and OutB)
Function NO (normally open) NC (normally closed)
In: Distance
Switching function:
– 1 switching point (SP)
TEACH mode:
– 1 teach-in point (TP = SP)
Tab. 5 Threshold value comparator with switching point (SP) and hysteresis (HY)
Window comparator for supply pressure monitoring (OutC)
Function NO (normally open) NC (normally closed)
In: supply pressure
Switching function:
– 2 switching points (SPmin,
SPmax)
– IO-Link:
– SP1 = SPmin
– SP2 = SPmax
no TEACH mode
Tab. 6 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)
1Range in which switching signals are suppressed in
the event of fluctuations around the switching point
(SP)
2Object
3Sensing distance
4Measuring nozzle
Fig. 5 Sensing range with switching points
5.2.3 Functional Principle
The system consists of two sub-components. The control module provides a compressed air prepara-
tion that is adapted to the supply pressure of the sensor module, as well as the functionality for
Product overview
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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.
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 pressure
Fig. 6 Configuration with a control module and two sensor modules
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).
5.2.4 Analogue output
Analogue output
The analogue output (distance monitoring) is available as voltage output 0…10V or 1…5V or as
current output 4…20mA.
Scaling of the analogue output
The analogue output at pin 2 of the electrical connection can be scaled. In the delivery status the out-
put characteristic curve at its end points (0…10V or 1…5V or 4…20mA) is allocated to the value
0…300 displayed correlated to the distance.
To scale the output characteristic curve, the effective range can be adapted for the distance input vari-
able è Tab. 7. The scaling of the analogue signal means that only a limited sensing range affects the
entire stroke of the analogue output (zoom function). This zoom function can be used to improve the
resolution of the analogue output.
Product overview
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Function Parameter Value range
Scaling of the analogue output to an upper end
value of the display range
[H.] 50…400
Scaling of the analogue output to a lower start
value of the display range
[L.] 0…200
Minimum distance between [H.] and [L.] 50
Tab. 7
5.2.5 Filter
The analogue signal can be smoothed with the low-pass filter. Smoothing also changes the rise and
fall time. Filtering only affects the analogue output. The filter time corresponds to the time constant ô
of a low-pass filter. If there is a sudden change in flow, the system reacts with a delay. According to
the set time constant ô the signal at the output of the filter has risen to 63.2%of the end value.
5.2.6 Replicating parameters
This function enables all settings that have been carried out on one sensor (master) to be transferred
to other identical sensors (device).
Parameters are transferred with the IO-Link functions. The previously configured sensor (master) is set
to a master mode, which enables it to transfer its parameters to an identical device (same device ID).
5.2.7 Minimum/maximum value
The minimum values and the maximum values for the flow measurement are displayed and reset in
the SHOW mode.
Switching off the operating voltage resets the minimum and maximum values.
5.2.8 Security code
The settings can be protected from unauthorised access by setting a numerical code of up to 4 digits
è 8.12 Setting security code (EDIT mode). The security code must be entered every time a setting is
changed (EDIT mode and TEACH mode).
5.2.9 Graphic distance monitoring
Function of the bar graph in RUN mode
The “distance” input variable is assigned to the two bar graphs. The bar graphs show the current posi-
tion of the object proportional to the value of the relevant switching point.
– Object outside the sensing range: all segments lit (maximum distance).
– Object approaches the switching point: the red segments switch off one after the other.
– Object has reached the switching point: all red segments are switched off, all green segments are
on.
– Object approaches the measuring nozzle: the green segments switch off one after the other.
Product overview
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Both sets of bars are only active if the switching output at Pin 2 is assigned to the binary signal Out B.
The bars run synchronously if OutA and OutB have the same switching point.
If different switching points have been set, the bars are asynchronous to one another.
No.1) Bar graph Switches off if Description
9 Distance £ 1.6 x switching point
8 Distance £ 1.4 x switching point
7 Distance £ 1.2 x switching point
6
Display red
Distance £ 1.0 x switching point
Object outside the specified
switching range2)
5 Distance £ 0.8 x switching point
4 Distance £ 0.6 x switching point
3 Distance £ 0.4 x switching point
2 Distance £ 0.2 x switching point
Object within the specified
switching range2)
1
Display green
always on Sensor ready for operation
1) Segment number
2) The switching point of OutA and OutB is between segments 5 and 6
Tab. 8 Bar graph in the RUN mode
6 Assembly
6.1 Measuring Nozzles
Measuring Nozzle Geometry
NOTICE!
Damage due to Ingress of Foreign Matter or Liquids
In the event of an inappropriate measuring nozzle configuration or inappropriate routing of the com-
pressed air lines, foreign matter or liquids (e.g.condensation) can enter the product and cause a mal-
function 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.
Assembly
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1Measuring nozzle
Fig. 7 Measuring Nozzle Geometry
1. Take the measuring nozzle geometry into account.
– Diameter: 1.5mm / 2.0mm (nominal diameter) / 2.5mm
2. Execute the outlet of the nozzle with sharp edges. Sharp edges at the outlet opening are permiss-
ible.
Measuring Nozzle Configuration
1. Ensure air outlet.
In the event of gap distance queries of < 30μm, it may be necessary to reset the outlet openings
of the nozzles by 30…60μm after the bearing surface in order to permit air discharge. The bear-
ing surface, in which the measuring nozzles are mounted, must be provided with ducts that permit
exhaust to the outside.
2. Comply with permissible tube lengths between the sensor module and measuring nozzle .
dDistance 30… 60 μm
1Air duct (example)
2Measuring nozzle
Fig. 8 Recessed measuring nozzle
1Air duct (example)
2Measuring nozzle
Fig. 9 Exhausting
Assembly
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Fig. 10 Impermissible measuring nozzle configuration
6.2 Assembling sensor module with control module
One control module can be connected to a maximum of 4 sensor modules.
1Blanking plug
2Threaded sleeve
Fig. 11 Mounting the Sensor Module
1. Loosen the blanking plugs with an Allen key.
– Width across flats (SW): 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 Allen key.
– SW: 2.5mm
– Tightening torque: 0.5Nm
4. Tighten the blanking plugs on the last sensor module by hand.
– SW: 3mm
6.3 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 com-
pressed air lines, foreign matter or liquids (e.g.condensation) can enter the product and cause a mal-
function 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.
Assembly
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Arrange the measuring nozzles
1. Place sensor module above the measuring nozzles è Fig.6.
2. Use suitable tubing length: 0.5…8m
6.3.1 H-rail Mounting
Fig. 12 H-rail Mounting
1. Hang H-rail mounting in the H-rail 1.
2. Press the H-rail mounting in the direction of the arrow until the mounting slide catches 2.
6.3.2 Plate mounting
Fig. 13 Plate mounting
1. Prepare threaded holes M5 è 15.3 Hole patterns.
2. Guide screws through the sensor and tighten. Use washers.
– Tightening torque: 0.6Nm
Assembly
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