PRÜFTECHNIK EDDYSENSOR User manual
Operating manual
EDDYSENSOR
Doc. no. LAB 5329 Release 26.8.97 Release 4
EDDYCHEK®isaregisteredtrademarkofPRÜFTECHNIK
AG. The information contained in this leaflet is subject to
change without further notice due to the PRÜFTECHNIK
policy of continuous product development.
© 1997 PRÜFTECHNIK AG. No copying of this informa-
tion, in any form whatsoever, may be undertaken without
express written permission of PRÜFTECHNIK.
PRÜFTECHNIK NDT GmbH
Fischerfleck 8
D-85737 Ismaning, Germany
Telephone: +49 (0) 89/9 96 16-0
Telefax: +49 (0) 89/96 79 90
eMail: [email protected]
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EDDYSENSOR Operating Manual
EDDYSENSOR Operating Manual
Contents Page
Safety instructions iv - vi
System diagram 1
Backplate connections of the EDDYSENSOR 2
1030 Front End Unit 3
Front module 3
Setting the gain 3
LED monitoring function 3
Filtering 4
Filter setting 4
F3 filter 4
F1 and F2 filters 5
Filter-to-speed relationship for filters F1 and F2 5
Graph of the F1 and F2 filter settings for normal applications 6
Graph of the F1 and F2 filter settings for slow applications 7
Graph of the F1 and F2 filter settings for fast applications 8
Back module 9
Connection of display device 9
Digital I/O 9
Test signal suppression 9
Connection of PLC or similar 10
Example of use 10
1031 Front End Unit 11
Front module 11
Setting the gain 11
LED monitoring function 11
Functions of the Gain switch 12
Summary of the displays 12
Manual gain setting 12
Filtering 13
Filter settings for F1 and F2 13
High pass filter settings for F1 and F2 14
Low pass filter settings for F1 and F2 14
Filter settings for F3 15
How to establish the filter settings 15
Filter settings for FI 1031 F1 and F2 16
ii EDDYSENSOR Operating Manual
1031 Back module 17
Connection of display device 17
Digital I/O 17
Test signal suppression 17
Connection of PLC or similar 18
Example of use 18
Delay unit 19
Front module 19
Switch settings 20
Front module -upper PCB 20
Delay 20
Duration 20
Prescaler 21
Activating the outputs 21
Line mode 22
Back module 22
PCB (showing modification status d) 22
System error (from modification status e onwards) 22
Encoder switch up to modification status d 22
Encoder switch from modification status e onwards 22
Encoder socket pin assignment 23
Output sockets 24
Fuses up to modification status d 25
Fuses from modification status e onwards 25
Changing a fuse 25
LAB 1110 connection box 26
Power unit 27
Function 27
Front module 27
Fuses for mains and operating voltages 27
Changing fuses 28
Back module 28
Example: WICU line with encoder 29-31
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EDDYSENSOR Operating Manual
Pin allocation of the I/O sockets 32
Analog signal output socket 32
Digital signal output socket 32
Encoder socket on DI1050BA 32
Potential-free output socket 33
Examples of connections using Digital I/O socket output 3434
3434
34
Alarm unit via a PLC 34
Alarm unit via a time-lag relay 34
Alarm unit via a time-lag relay using the internal current supply 34
Locating and changing fuses 35
Delay unit 35
PCB of the back module 35
Fuses up to modification status d 35
Fuses from modification status e onwards 35
Replacing the fuses 35
Power unit 36
Fuses 36
PCB of the front module 36
Replacing the fuses 36
Appendix - Filter tables 37
Technical data
iv EDDYSENSOR Operating Manual
General information
Due to the nature of eddycurrent testing, strong
electro-magnetic fields could affect the test results.
Areas of use This equipment is intended for use exclusively in collecting
and processing eddycurrent test data in areas where there
is no danger of explosion.
Electro-magnetic
compatibility
This equipment was tested for electro-magnetic compatibil-
ity according to EN 55011 Group 1, Class A and EN 50082-
2.
Operative restrictions Using this equipment in a residential area can lead to electro-
magnetic interference and therefore requires special authori-
zation from the national regulatory agency for post and tel-
ecommunications (BAPT).
Installation site
requirements
Installation instructions
•Temperature range: see "Technical Data"
•Flat, level installation surface
•Equipment must be far enough away from the wall to open
the rear door easily and access the interior
(For actual dimensions, see "Technical Data" at the back of
the operating manual.)
Technical data
The technical data relevant to this equipment is listed at the
back of the Operating Manual.
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EDDYSENSOR Operating Manual
Safety information
ESD instructions
•Ensure that the power is off and disconnected from the
equipment (pull out the plug) before opening it
• Do not use the equipment with the housing open
•Repair work must only be carried out by authorized
specialists
•Use only original spare parts and accessories
•Only trained personnel may carry out service and
maintenance
•Any modification carried out without the agreement of the
manufacturer invalidates the guarantee
Safety instructions
vi EDDYSENSOR Operating Manual
Exchanging the plug-in modules
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EDDYSENSOR Operating Manual
The EDDYSENSOR is a simple eddycurrent detection
device which senses the presence of a defect to
activate subsequent activities, e.g. shutting off the
cooling water in a welding line with annealing. The
minimum configuration consists of two units in a table-
top housing. A third unit is optional.
The minimum configuration is made up of the Front
End Unit in the left-hand position and the Power Unit in
the right-hand position. For safety reasons, the back
module of the Power Unit is supplied immovably as-
sembled in the table-top housing, LAB 1004. The op-
tional unit is the Delay Unit in the middle position. The
modules and their positions are shown in the diagram
above.
EDDYSENSOR System Diagram
Output signal
to peripherals
Input signal from test coil
Front End Unit
Front module
FM103xF
Optional
Power Unit
Delay Unit
Back module
FI103xBAfff
Front module
DM1050F
Back module
DI1050BA
Front module
PM1040F
Back module
PI1040BA
2EDDYSENSOR Operating Manual
The diagram shows the backplate of the EDDYSENSOR. The inputs and outputs are also shown. The output
signal for the configuration without the Delay Unit is taken from the backplate of the Front End Unit whereas for
the configuration with the Delay Unit, the delayed output signal is taken from the potential-free output on the
backplate of the Delay Unit.
EDDYSENSOR with Delay Unit
Backplate connections of the EDDYSENSOR
IMPORTANT
Whenever a module is removed or inserted
ensure that the power is OFF and the mains plug pulled OUT.
Also, the ESD instructions given on the separate sheet
at the front of this handbook must be observed
when any work is carried out on the equipment.
Voltage switch
between 115V/230V
Socket for
power supply
Delayed and undelayed
signal outputs for the
configuration with the
Delay Unit
Analog signal to
display the defect,
e.g. on a recorder, bar
graph or oscillo-
scope
Defect output of an
undelayed digital
signal for switching
peripherals such as
PLC, warning units,
etc.
Input signal from the
line encoder Coil
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