
SCAN
Measuring Light Curtain
Connecting and Operating Instructions
601520 -02/06 Subject to change without prior notice

Notes on using these connecting and operating instructions
DEUTSCH ENGLISCH FRANZÖSISCH ITALIENISCH SPANISCH
These connecting and operating instructions contain information regarding the proper
and effective use of SCAN light curtains. It is included in the scope of delivery.
Safety notes and warnings are designated by the symbol .
Leuze lumiflex GmbH + Co. KG is not liable for damage resulting from improper
use of its equipment. Familiarity with these instructions constitutes part of the
knowledge required for proper use.
© Reprint and reproduction, in whole or in part, only with the explicit permission of
Leuze lumiflex GmbH + Co. KG
Liebigstraße 4
D-82256 Fürstenfeldbruck
Tel. +49 8141 5350-0
Fax +49 8141 5350-190
E-Mail: lumiflex@leuze.com
http://www.leuze.de
2SCAN

Table of Contents
1 System Overview and Range of Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Range of Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Configuration and Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Display Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Switch Output Measurement Field Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 RS 485 Data Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6 Driver Program for the PLC Control (e.g. Siemens S7-200) . . . . . . . . . . . . . . . . . . . . . . . 9
3.7 Contamination and Error Signal Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Standard Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Mounting SCAN with the Protective Mounting Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 Electrical Connections and Terminal Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Technical Data and Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9 Selection and Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.1 Device Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9.2 Order Numbers and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
10 Declaration of Confirmity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SCAN 3
SPANISCH ITALIENISCH FRANZÖSISCH ENGLISCH DEUTSCH

1 System Overview and Range of Applications
DEUTSCH ENGLISCH FRANZÖSISCH ITALIENISCH SPANISCH
1.1 System Overview
SCAN light curtains consist of a transmitter and a receiver. Like a light barrier, they
work with modulated infrared light and stand out due to the following features:
• Measurement field up to 6 m wide, from 900 to 3000 mm high
• 30 mm resolution at every position of the measurement field
• Can be connected directly to an PLC control (such as the Siemens S7-200)
• PNP switch output for measurement field status free/occupied
• Simple connection due to M12 connector
• Contamination and error signal output to the PLC
• Extremely small design (cross-section 17 mm x 33 mm)
4SCAN

1.2 Range of Applications
The scope of SCAN applications ranges from simple detection or measuring tasks,
such as controlling projection or the presence of an object, to contour or shape
recognition.
Overhang control
Customer
machine
control
Loop control
S7-200
Hole detection
Measuring of widths
S7-200
Measuring of heights
S7-200
S7-200
Measuring of distance
Shape evaluation
S7-200
S7-200
Fig. 1: Examples of Applications Using the Measuring Light Curtain SCAN
SCAN 5
SPANISCH ITALIENISCH FRANZÖSISCH ENGLISCH DEUTSCH

2 Safety Notes
DEUTSCH ENGLISCH FRANZÖSISCH ITALIENISCH SPANISCH
SCAN light curtains are not active optoelectronic protective devices (AOPD) in
accordance with IEC 61496-1, -2 and are thus not suited for personnel protection.
3 Configuration and Function
3.1 System Configuration
SCAN light curtains consist of a transmitter equipped with a number of sequentially
controlled IR radiation elements aligned in a row, and a receiver equipped with a
number of sequentially controlled receiver elements, likewise aligned in a row. The
parallel light axes projected between the transmitter and receiver create a measure
ment field with a resolution of 30 mm. In order to achieve linked measurement fields for
different geometric planes, SCAN master and slave units can be switched in succes
sion by means of a plug-in connector cable. The receiver has a switch output for
performing simple detection tasks as well as a serial data interface for transmitting
measurement values to a control system for further processing. A driver program is
available that enables SCAN to be connected directly to the Siemens S7-200. Drivers
for controls from other manufacturers can be produced upon request.
Figure 3 shows the system configuration of SCAN in both its standard design and its
master/slave version.
c
d
a b
e
f
g
c
d
h
-
-
e
f
g
i
a = SCAN transmitter
b = SCAN receiver
c = +24V DC
d=0 V
f=0 V
g = RS 485
h = SCAN transmitter master
i = SCAN transmitter slave
e = +24V DC
Fig. 2: SCAN Standard Configuration or Master/Slave Version
6SCAN

3.2 Function
After the supply voltage is applied, the infrared light axes are controlled and evaluated
individually in quick succession. The measurement value of each light axis (“light path
unobstructed” or “light path interrupted”) is output either as an aggregate signal at the
switch output or as a single measurement value within a serial data stream via the RS
485 interface of the receiver.
3.3 Display Elements
SCAN
receiver
Vor Anschluß
Betriebsanleitung
beachten!
Pay attention to
manual prior to
installation!
a
b
c
failure
SCAN
transmitter
Vor Anschluss
Betriebsanleitung
beachten!
Pay attention to
manual prior to
installation!
power
failure
d
e
a = Object in the measurement field or device out of alignment
b = Measurement field unobstructed
c = Failure in the receiver
d = Supply voltage / Transmitter on
e = Failure in the transmitter
Fig. 3: Display Elements
3.4 Switch Output Measurement Field Status
The short-circuit-proof +24V DC pnp switch output on the receiver is able to switch
earthed loads of up to 0.1 A. Contactors or relays must be wired parallel to the coil with
suitable components for suppressing interference.
SCAN 7
SPANISCH ITALIENISCH FRANZÖSISCH ENGLISCH DEUTSCH