Pepperl+Fuchs VDM18-100/20/122/151 User manual

HANDBUCH / MANUAL / MANUEL
FACTORY AUTOMATION
VDM18-100/20/122/151
VDM18-100/20/88/122/151
VDM18-300/20/122/151
VDM18-300/20/88/122/151
VDM18-300/21/122/151

Copyright (Deutsch)
Die Wiedergabe bzw. der Nachdruck dieses Dokuments, sowie die entsprechende Speicherung in Datenbanken
und Abrufsystemen bzw. die Veröffentlichung, in jeglicher Form, auch auszugsweise, oder die Nachahmung
der Abbildungen, Zeichnungen und Gestaltung ist nur auf Grundlage einer vorherigen, in schriftlicher Form vor-
liegenden Genehmigung seitens Pepperl+Fuchs GmbH, zulässig.
Für Druckfehler und Irrtümer, die bei der Erstellung der Betriebsanleitung unterlaufen sind, ist jede Haftung
ausgeschlossen. Liefermöglichkeiten und technische Änderungen vorbehalten.
Erstveröffentlichung August 2004.
Copyright (Englisch)
No part of this document may be reproduced, published or stored in information retrieval systems or data bases
in any manner whatsoever, nor may illustrations, drawings and the layout be copied without prior written permis-
sion from Pepperl+Fuchs GmbH.
We accept no responsibility for printing errors and mistakes which occurred in drafting this manual. Subject to
delivery and technical alterations.
First publication August 2004
Copyright (Français)
Toute reproduction de ce document, ainsi que son enregistrement dans une base ou système de données ou
sa publication, sous quelque forme que ce soit, même par extraits, ainsi que la contrefaçon des dessins et de la
mise en page ne sont pas permises sans l’autorisation explicite et écrite de Pepperl+Fuchs GmbH.
Nous déclinons toute responsabilité concernent les fautes éventuelles d’impression et autres erreurs qui
auraient pu intervenir lors du montage de cette brochure. Sous réserve de modifications techniques et de
disponibilité pour livraison.
Première publication Août 2004

3
Maßzeichnung / Dimensional drawing / Plan coté
Abb. 1 / Illustr. 1 / Fig. 1
Anschluss / Wiring / Raccordement
Typ / Type / Ref. Pin 1 Pin 5
VDM18 .../88 RS485 Y/A RS485 Z/B
Abb. 2 / Illustr. 2 / Fig. 2
Emitter
Receiver
Version X (mm)
VDM18-100 18.4
VDM18-300 21.5
4.3
4.3
13.5
17
4
50
X11
4
50
4
M12 x 1
40
44
18
44
46
Analog +
Analog -
1
2
3
4
5
6
7
8
n.c.
n.c.
+UB
0 V
Q1
Q2
Option /20 - 2 x PNP Option /21 - 2 x NPN
Analog +
Analog -
1
2
3
4
5
6
7
8
n.c.
n.c.
+UB
0 V
Q1
Q2

4
Inhalt / Content / Contenu
Deutsch ................................................................................................................... 5
English................................................................................................................... 26
Français................................................................................................................. 47

Date of issue: 08/08/2011 Partnummer: 194551
Mounting and
operating instructions
26
Content
Signs and Symbols......................................................................................................................................26
Safety information .......................................................................................................................................26
Appropriate use ...........................................................................................................................................27
Performance characteristics........................................................................................................................27
Mode of function..........................................................................................................................................27
Mounting......................................................................................................................................................28
Electrical installation ...................................................................................................................................29
Instructions of use .......................................................................................................................................30
General use.................................................................................................................................................30
Settings........................................................................................................................................................32
Functions.....................................................................................................................................................32
Reset ...........................................................................................................................................................34
Unlocking keys ............................................................................................................................................34
Averaging ....................................................................................................................................................35
Automatic zero mode...................................................................................................................................35
Automatic centre mode................................................................................................................................36
Maximum hold mode ...................................................................................................................................36
Difference hold mode ..................................................................................................................................37
Measured value hold mode .........................................................................................................................37
Differential measurement mode ..................................................................................................................38
Transmission protocol .................................................................................................................................40
Bus commands............................................................................................................................................41
Explanations on bus commands..................................................................................................................42
Optical data (typ.) ........................................................................................................................................43
Electrical data (typ.),....................................................................................................................................43
Mechanical data ..........................................................................................................................................43
Order information.........................................................................................................................................44

Date of issue: 08/08/2011 Partnummer: 194551
Mounting and
operating instructions
27
Signs and Symbols
Safety information
Warning
This symbol signals passages in the manual which must be observed at all times. Non-compliance can
cause injuries or material damage.
Warning Laser
This symbol appears in front of warning passages concerning the danger of laser beams.
Information
This symbol signals passages with useful information.
It is essential that this manual, and the safety information in particular, is read, thoroughly un-
derstood and observed before setting the VDM18 sensor into operation.
The VDM18 sensor may only be connected, mounted and adjusted by qualified personnel.
Interventions and alterations to the device are not permissible!
The VDM18 sensor is not a safety component as described by EU machine directives and must
never be used in applications where human safety is at risk.
The VDM18 sensor complies with laser protection class 2 according to DIN EN 60825-1, status
2008-05. The technical requirements comply with EN 60947-5-2, 2000 edition.
Never look into the path of the laser. Do not suppress the reflex to close the eyelids.
Gazing into the beam path for longer periods can damage the retina of the eye.
When mounting the sensor, ensure if possible that the beam path is sealed off at the end. The
laser must not be directed at people (head height). When aligning VDM18, ensure that there are
no reflections on reflective surfaces.
Should the safety label on the VDM18 sensor be partly covered due to its installation position,
other safety labels are to be positioned on visible parts of the sensor. When applying the new
safety label, make sure that you cannot look into the laser beam whilst reading it.

Date of issue: 08/08/2011 Partnummer: 194551
Mounting and
operating instructions
28
Appropriate use
The VDM18 sensor is not authorised for use in protecting human safety on machines and during
technical applications.
The VDM18 is an optical sensor and measures distances without contact. When combined with another VDM18
sensor, the thickness of objects can also be measured.
Performance characteristics
• Operating range VDM18-100: 30 – 100 mm
• Operating range VDM18-300: 80 – 300 mm
• 2 digital outputs
• Analogue output 4-20 mA
• Compact design 50 x 50 x 17 mm
• High resolution (0.1 % of measuring range)
• Option /88 with serial bus interface (RS 485 half-duplex)
• “Teach-in” settings also possible per software
• Wide functional range
Mode of function
The VDM18 sensor measures according to the principle of triangulation. The distance between the object and sensor
is determined on the basis of the position of the light spot on the detector.
Operating range (Factory setting)
30 mm
80 mm
100 mm
300 mm
Illustr. 3
On
Off
20 mA
OK LED (green)
(Good Target)
Analogue
output
(invertible) 4 mA
VDM18-100 ...
VDM18-300 ...

Date of issue: 08/08/2011 Partnummer: 194551
Mounting and
operating instructions
29
Mounting
Sensor alignment
Position VDM18 in a way that the distance to the object is within the working range of the sensor.
Screw the VDM18 sensor to the mounting bracket, e.g. type OMH-VDM18 (not included in delivery) or a suitable
device. Only use the holes provided in the housing (see dimensioned drawing) for this purpose.
If steps, moving or striped objects are to be detected, the front panel of the sensor should be mounted at a right
angle to the direction of movement or stripes (Illustr. 5 + 6).
With very reflective objects, the sensor must be mounted at an angle of approx. 5° (Illustr. 7).
To optimise measurements, the VDM18 sensor is to be given constructive protection from vibra-
tions.
The VDM18 sensor is now mounted.

Z Z
 
Illustr. 5 Linear movement Illustr. 6 Rotating movement Illustr. 7 Reflective object
Illustr. 4
Light spot representation
Emitter
Receiver
C
E11
A
B
D
VDM18-100 VDM18-300
30A (mm) 80
100B (mm) 300
C (mm)
D (mm)
E (mm)
8.5
1.5 x 3 1.5 x 3.5
1.5 x 3.25 2 x 4.5
29.4 32.5

Date of issue: 08/08/2011 Partnummer: 194551
Mounting and
operating instructions
30
Electrical installation
Warning: Pin 1 and pin 5 must not be connected to operational voltage as this will destroy the
VDM18 sensor.
Turn the sensor connector plug according to the installation position (Illustr. 1) so that the connection cable can be
freely connected without being bent.
Insert the socket of the connection cable into the VDM18 connector and screw tight
For example, secure the connection cable from sliding with a cable tie .
Connect VDM18 as shown in Illustr. 8
Connection Colour Use Comments
1 (WH) White RS485 Y/A /88 option only
2 (BN) Brown + UB
3 (GN) Green As signal output Q1or input with optional input functions (see
“Settings” page 32)
Q1
4 (YE) Yellow As signal output Q2or switching function “good target” (detec-
table object in measuring range)
Q2or good target
5 (GY) Grey RS 485 Z/B /88 option only
6 (PK) Pink QA + analogue measurement
7 (BU) Blue - UB
8 (RD) Red QA - analogue mass
Once power supply has been connected, the VDM18 is ready for operation after a short stand-by delay
(< 300 ms).
For maximum precision, please allow for a heating period (approx. 5 minutes).
Illustr. 8 Connection diagram
Type Pin 1 Pin 5
VDM18 .../88 RS485 Y/A RS485 Z/B
Analog +
Analog -
1
2
3
4
5
6
7
8
n.c.
n.c.
+UB
0 V
Q1
Q2
Option /20 - 2 x PNP Option /21 - 2 x NPN
Analog +
Analog -
1
2
3
4
5
6
7
8
n.c.
n.c.
+UB
0 V
Q1
Q2

Date of issue: 08/08/2011 Partnummer: 194551
Mounting and
operating instructions
31
Instructions of use
Control panel
The VDM18 has various modes and is configured using the S and T buttons.
Button
S
Set button: Change / confirm a setting or set a switching point
T
Toggle button: Select a function (proceed to the next function)
The selected settings and signal condition are indicated by LEDs.
LED Colour Use/Description
BA Green Power supply indicator
On: ready (run mode)
Flashing: setting mode is active
ZA Red Status indicator
Function activated/not activated, or confirmation signal
Q1Yellow Q1 input/output
Q2Yellow Q2 input/output
H Green Q1trigger input or Q1enable input function active
OK Green Good target (object detected and in measuring range)
T Green Pulse stretching function is active
Z Green Q1automatic centre or Q1automatic zero function is active
The table of functions on page 32 explains the further significance of the LEDs: Q1, Q2, H, OK, T and Z
General use
The following four steps are used to configure the VDM18 sensor:
1. Activate setting mode
Press the S and T buttons simultaneously for 3 seconds
After this period, the power supply indicator BA flashes
set VDM18, see Illustr. 9. The LEDs show the status of function no. 1 (page 32)
When all the LEDs start immediately flashing
 Unlock VDM18, see paragraph “Unlocking keys” on page 34
2. Select functions (see page 32)
Press the T button to select the next function in the function table.
The function number is indicated by a clear LED pattern and the function status is indicated by the status indicator ZA
(LED on = active, LED off = not active).
The sensor only switches to the next function when the T button is released.
Illustr. 9
BA ZA
Q1Q2
H OK
T Z
S
T