Festo SOPA-C series User manual

en Operating
instructions
8078142
2017-09b
[8068125]
Air gap sensor
SOPA-...

SOPA-...
2Festo – SOPA-... – 2017-09b
Original instructions
SOPA-EN
Identification of hazards and instructions on how to prevent them:
Danger
Immediate dangers which can lead to death or serious injuries
Warning
Hazards that can cause death or serious injuries
Caution
Hazards that can cause minor injuries
Other symbols:
Note
Material damage or loss of function
Recommendations, tips, references to other documentation
Essential or useful accessories
Information on environmentally sound usage
Text designations:
 Activities that may be carried out in any order
1. Activities that should be carried out in the order stated
– General lists
èResult of an action/References to more detailed information

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English – Air gap sensor SOPA-...
Table of contents
1 Product description 5.......................................................
1.1 Overview 5................................................................
1.2 Features 7................................................................
1.3 Factory settings 8...........................................................
2 Function and application 9...................................................
2.1 Design 9..................................................................
2.2 Operating statuses 10........................................................
2.3 Function range 11...........................................................
2.3.1 Binary signals and switching signals 11..................................
2.3.2 Graphic distance monitoring 13........................................
2.3.3 Spurious pulse suppression – parameter options 14........................
2.3.4 Switching off the display 14...........................................
2.3.5 Security code 14....................................................
2.3.6 Min/max values 14..................................................
3 Requirements for product use 15...............................................
4 Installation 18..............................................................
4.1 Mechanical system 18........................................................
4.2 Pneumatic system 20.........................................................
4.3 Electrical connection 21.......................................................
5 Commissioning 23...........................................................
5.1 Symbols on the display 23.....................................................
5.2 Bar graph on the display 24....................................................
5.3 Symbols for representing the menu structure 25...................................
5.4 RUN mode 25...............................................................
5.5 INFO/SHOW mode 26........................................................
5.6 Edit mode 28...............................................................
5.6.1 Start EDIT mode 28..................................................
5.6.2 Setting the switching characteristic of binary signals 29.....................
5.6.3 Setting special menu [SPEC] 31........................................
5.7 TEACH mode 32.............................................................

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6 Operation 33...............................................................
6.1 Resetting the sensor module to its factory settings 33...............................
6.2 Using the differential pressure regulator 34.......................................
7 Maintenance and care 34.....................................................
8 Disassembly 35.............................................................
9 Fault clearance 36...........................................................
10 Accessories 37..............................................................
11 Technical data 37............................................................
12 Quick commissioning 43......................................................

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1 Product description
For all available product documentation èwww.festo.com/pk
1.1 Overview
6
123
4
5
78 69
aJ
1Control module (optional)
2Sensor module (max. 4 modules permitted
incombination with control module)
3Plug for electrical connection
4Display
5Fastening slides
6Threaded sleeve (M4)
7Blanking plug (M7)
8Label holder
9Adapter plate for wall mounting
aJ Plug for electrical connection
Fig. 1 Mechanical and electrical connections

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1
23
4
5
6
7
8
9aJaAaB
1Manual LED (green) – Ready indication for
manual override1)
2Pushbutton – Clean (exhaust air)1)
3Pushbutton – Sense (instrumentair)1)
4EDIT button
5B pushbutton
6A pushbutton
7Pneumatic connection for measuring nozzle
(output)
8Supply port for operating pressure
9Vent screw (width across flats 14)
aJ Supply port for supply pressure
aA Status LED (yellow) – Sense(instrument air)
aB Status LED (yellow) – Clean(exhaust air)
1) Only for product variants with manual override (SOPA-C-...-H)
Fig. 2 Operating elements and pneumatic connections

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1.2 Features
Feature Order
code
Type
Air gap sensor SOPA Air gap sensor for contact and distance monitoring with LCD
Modules CM1- Control module with one sensor module
CM2- Control module with two sensor modules, pneumatically
interlinked
CM3- Control module with three sensor modules, pneumatically
interlinked
CM4- Control module with four sensor modules, pneumatically
interlinked
M1- Single sensor module 1)
Manual override of
control module
H- Control module with electrically activatable manual override
Sensing range R1- 20…200 µm
Type of mounting HH-rail mounting/through-hole
WAdditional wall mounting
Pneumatic connection Q6- Push-in connector 6 mm
Electrical inputs/
outputs
2P- 2x PNP
2N- 2x NPN
Electrical connection M12- Plug connector; M12x1, 4-pin; A-coded
Electrical accessories E1 Connecting cable with straight socket, cablelength 2.5 m2)
E2 Connecting cable with straight socket, cablelength 5 m2)
E3 Connecting cable with angled socket, cablelength 2.5 m2)
E4 Connecting cable with angled socket, cablelength 5 m2)
1) Optional manual override not selectable
2) Number of connecting cables dependent on the number of modules
Tab. 1 Overview of variants

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1.3 Factory settings
Settings Menu option Value/function
[SPEC]
Spurious pulse suppression [Option] Off
Signal assignment Out x to Pin 2 [P 2] c
Display timeout [di.] ON
Security code [lock] OFF
[OutA]
Switching point [SP] 100
Hysteresis [Hy] 5
Switching characteristic NO (normally open contact)
[OutB]
Switching point [SP] 150
Hysteresis [Hy] 5
Switching characteristic NO (normally open contact)
[OutC]
Lower switching point [SP min] 0.6 bar (60 kPa)
Upper switching point [SP max] 1.8 bar (180 kPa)
Switching characteristic NO (normally open contact)
Tab. 2

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2 Function and application
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.
2.1 Design
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.
123 45
6
7
8
9aJ
13/2-way valve (instrument air)
2Pressure regulator
33/2-way valve (exhaust air)
4Supply pressure
5Sensor modules (pneumaticallylinked)
6Object (example)
7Measuring nozzles
(1 per sensor module)
8Air gap
9Vent screw
aJ Supply port for operating pressure
Fig. 3 Configuration – with a control module and two sensor modules here
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).

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2.2 Operating statuses
INFO mode EDIT mode TEACH mode
SHOW mode
RUN mode
Fig. 4 Overview of the SOPA operating statuses
Operating status Function
RUN mode – Basic status after the operating voltage is applied
– Numerical and graphical display of distance-correlated values (bar graph)
– Display of measured values for supply pressure (in bar)
– Display of signal statuses for binary signals Out A, Out B, Out C
INFO mode – Display of input variables in the display.
– Switching of the display by pressing the A and/or B pushbutton.
SHOW mode – Display of current settings for the binary signals,
– Display and reset of the min/max values for the distance-correlated value
and supply pressure.
EDIT mode – Setting or alteration of the parameters for the air gap sensor
(switchingoutputs, display).
TEACH mode – Teaching-in of the switching points for the distance-correlated values
(transfer of the current value as the trigger level).
Tab. 3 SOPA operating statuses