Leuze DB 12 B Operating Instructions
DB 12 B
Double Sheet Testing Unit
en 04-2014/06 50126538
We reserve the right to
make technical changes
TECHNICAL DESCRIPTION
© 2014
Leuze electronic GmbH + Co. KG
In der Braike 1
D-73277 Owen / Germany
Phone: +49 7021 573-0
Fax: +49 7021 573-199
http://www.leuze.com
Leuze electronic DB 12 B
Table of contents
1 General information ........................................................................................................... 2
1.1 Explanation of symbols ........................................................................................................ 2
1.2 Declaration of conformity ..................................................................................................... 2
2 Safety notices..................................................................................................................... 3
2.1 Safety standards ..................................................................................................................3
2.2 Intended use ........................................................................................................................ 3
2.3 Areas of application ............................................................................................................. 3
2.4 Organisational measures .....................................................................................................3
3 Device overview .................................................................................................................4
4 Specifications..................................................................................................................... 6
5 Mounting the transmitter and receiver............................................................................. 8
6 Electrical connection ......................................................................................................... 9
7 Commissioning ................................................................................................................10
8 Operation - inputs and outputs....................................................................................... 14
9 Diagnosis in the case of error ........................................................................................ 15
10 Application-specific extension types............................................................................. 16
10.1 VDB 12 B/6.10P - Detection of splices on blister material ................................................. 16
10.2 VDB 12 B/6.11N - Automatic teach on first sheet .............................................................. 16
10.3 VDB 12B/6.12P - without teach button in the cover ........................................................... 16
Leuze electronic DB 12 B 1
General information
For UL applications:
only for use in "Class 2" circuits according to NEC.
1 General information
1.1 Explanation of symbols
The symbols used in this technical description are explained below.
Attention!
This symbol appears before text passages which must absolutely be observed. Failure to
heed this information can lead to injuries to personnel or damage to the equipment.
Notice!
This symbol indicates text passages containing important information.
1.2 Declaration of conformity
The DB 12 B double sheet testing unit sensor system has been developed and manufactured in adherence with the applicable European standards and directives.
Notice!
The corresponding declaration of conformity can be requested from the manufacturer.
The manufacturer of the product, Leuze electronic GmbH + Co. KG in D-73277 Owen/Teck,
possesses a certified quality assurance system in accordance with ISO 9001.
2 DB 12 B Leuze electronic
2 Safety notices
2.1 Safety standards
The DB 12 B double sheet testing unit has been developed subject to the applicable safety
standard EN 60947-5-2 (IEC 60947-5-2).
2.2 Intended use
The DB 12 B double sheet testing unit has been conceived as a monitoring device mainly
for paper working machines. It monitors incoming paper sheets at machines designed to
process single sheets. It is used to detect and signal double sheets in the sheet feeder
during operation.
Attention!
The DB 12 B is not a safety module acc. to EU machine guidelines.
The protection of machine and the device cannot be guaranteed if the device is operated in
a manner not corresponding to its intended use.
Access to or changes on the device, except where expressly described in this manual, are
not authorised.
2.3 Areas of application
Safety notices
Double sheets made of the following materials can be reliably detected by the DB 12 B:
• Paper
• Plastic
• Metal foils
For paper, the measurement range is 20g/m
cardboard).
2
(airmail paper) to 1200g/m2 (homogeneous
2.4 Organisational measures
All entries in this operating manual must be heeded, in particular those in the section "Safety
notices" and "Commissioning".
Keep this technical description in a safe place. It should be accessible at all times.
Safety regulations
Observe the locally applicable safety regulations.
Qualified personnel
Mounting, commissioning and maintenance of the device may only be carried out by qualified personnel.
Leuze electronic DB 12 B 3
TNT 35/7-24V
Device overview
A M8 connector for transmitter DB 18 UP.1. …
B M8 connector for receiver DB 18 UP.1. …
C Indicator diodes
D Push button TEACH IN
E Alternative 42mm housing length (DB 18 UP.1-40, 2500)
3 Device overview
The ultrasonic double sheet testing system consists of a VDB 12 B… analysis amplifier and
a pair of DB 18 UP ultrasonic sensors.
It detects and checks primarily paper, plastic and metal foils which are guided in by feeders.
The device functions as a presence monitor by constantly applying a signal at the single
sheet output when an object is located between the sensors. It functions as a double sheet
testing unit by comparing each sheet with the stored reference value. A detected double
sheet is signalled at the double sheet output.
Figure 3.1: Device overview - dimensions
4 DB 12 B Leuze electronic
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