Leuze electronic GS 754B User manual

GS 754B
CCD Forked Photoelectric Sensors
EN 04-2017/01 50112717 We reserve the right to make technical changes
Original operating instructions

Leuze electronic GS 754B
©2017
Leuze electronic GmbH + Co. KG
In der Braike 1
D-73277 Owen / Germany
Phone: [phone]
Fax: [phone]
http://www.leuze.com
[email protected]m

Leuze electronic GS 754B 1
Table of contents
1 About this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Foreseeable misuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Competent persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Disclaimer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Controls and indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.2 Optical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.3 LED indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1 Diameter determination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1.1 ASCII representation via RS 232 (P and M12 interfaces) . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1.2 Binary representation via RS 232 (P and M12 interfaces) . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Edge measurement and height verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.3 Width measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Device configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2 Terminal program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2.1 Basic configuration of the terminal program (interface P) . . . . . . . . . . . . . . . . . . . . . . . . 14
6.3 Configuration of the measurement, analysis and output procedures over interface P 15
6.3.1 Configuration table for GS 754B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.4 Special configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.4.1 Edge measurement for perforated objects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.4.2 Changeover of the edge assignment for single-object measurement . . . . . . . . . . . . . . . 18
6.4.3 PIN 2 as a teach input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.4.3.1 Teach-in in the middle of the measurement field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.4.3.2 Teach-in at the end of the measurement field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.4.3.3 Teach-in at the start of the measurement field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4.4 PIN 2 as a synchronization / trigger input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4.5 PIN 2 as an activation input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2 GS 754B Leuze electronic
Table of contents
6.4.6 PIN 2 as a switching output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.4.6.1 Standard function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
6.4.6.2 Standard function, inverted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
6.4.6.3 Photoelectric sensor function, dark switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
6.4.6.4 Photoelectric sensor function, light switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7 Measurement range and resolution . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1 Analog measurement value output (interface M12) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.2 Digital measurement value output (P and M 12 interfaces) . . . . . . . . . . . . . . . . . . . . . . 24
7.2.1 ASCII format for P and M12 interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2.2 Binary format for the P and M12 interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8 Error messages (P and M12 interfaces). . . . . . . . . . . . . . . . . . . . . 29
9 Service and support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10.1 Optical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10.2 Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10.3 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10.4 Output signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
10.5 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
10.6 Environmental data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
11 Order guide and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.1 Order guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.2 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.2.1 Connection cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.2.2 Configuration cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
12 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

About this document
Leuze electronic GS 754B 3
TNT 35/7-24V
1 About this document
This technical description contains information regarding the proper use of the GS 754B
measuring CCD forked photoelectric sensors.
1.1 Explanation of symbols
The symbols used in this technical description are explained below.
Attention
This symbol precedes text messages which must strictly be observed. Failure to comply with
this information results in injuries to personnel or damage to the equipment.
Notice
This symbol indicates text passages containing important information.

Safety
4 GS 754B Leuze electronic
2 Safety
This sensor was developed, manufactured and tested in line with the applicable safety stan-
dards. It corresponds to the state of the art.
2.1 Intended use
In connection with a connected control system or evaluation unit, GS 754B CCD forked
photoelectric sensors are used to detect and measure small objects in industrial production
processes.
Areas of application
The GS 754B CCD forked photoelectric sensor is designed especially for the following fields
of application:
• Diameter determination
• Edge measurement and height verification
• Width measurement
Attention
For UL applications, use is only permitted in class 2 circuits in accordance with the NEC
(National Electric Code).
CAUTION
Observe intended use!
Only operate the device in accordance with its intended use.
The protection of personnel and the device cannot be guaranteed if the device is oper-
ated in a manner not complying with its intended use.
Leuze electronic GmbH + Co. KG is not liable for damages caused by improper use.
Read the technical description before commissioning the device.
Knowledge of this technical description is an element of proper use.
NOTICE
Comply with conditions and regulations!
Observe the locally applicable legal regulations and the rules of the employer's liability
insurance association.

Safety
Leuze electronic GS 754B 5
TNT 35/7-24V
2.2 Foreseeable misuse
Any use other than that defined under "Intended use" or which goes beyond that use is
considered improper use.
In particular, use of the device is not permitted in the following cases:
• Rooms with explosive atmospheres
• As stand-alone safety component in accordance with the machinery directive 1)
• Operation for medical purposes
2.3 Competent persons
Connection, mounting, commissioning and adjustment of the device must only be carried
out by competent persons.
Prerequisites for competent persons:
• They have a suitable technical education.
• They are familiar with the rules and regulations for occupational safety and safety at
work.
• They are familiar with the technical description of the device.
• They have been instructed by the responsible person on the mounting and operation
of the device.
Certified electricians
Electrical work must be carried out by a certified electrician.
Due to their technical training, knowledge and experience as well as their familiarity with
relevant standards and regulations, certified electricians are able to perform work on elec-
trical systems and independently detect possible dangers.
In Germany, certified electricians must fulfill the requirements of accident-prevention regu-
lations BGV A3 (e.g. electrician foreman). In other countries, there are respective regula-
tions that must be observed.
1) Use as safety-related component within the safety function is possible, if the component combi-
nation is designed correspondingly by the machine manufacturer.
NOTICE
Do not modify or otherwise interfere with the device.
Do not carry out modifications or otherwise interfere with the device.
The device must not be tampered with and must not be changed in any way.
The device must not be opened. There are no user-serviceable parts inside.
Repairs must only be performed by Leuze electronic GmbH + Co. KG.

Safety
6 GS 754B Leuze electronic
2.4 Disclaimer
Leuze electronic GmbH + Co. KG is not liable in the following cases:
• The device is not being used properly.
• Reasonably foreseeable misuse is not taken into account.
• Mounting and electrical connection are not properly performed.
• Changes (e.g., constructional) are made to the device.

Controls and indicators
Leuze electronic GS 754B 7
TNT 35/7-24V
3 Controls and indicators
Figure 3.1: Positioning of the controls and indicators
AInterface P
BLED indicators
CMeasurement range

Device description
8 GS 754B Leuze electronic
4 Device description
4.1 General information
The central part of the unit is an optical sensor that generates a horizontal band of light
(figure 3.1). The band of light illuminates a CCD line array camera. This CCD array produces
an output signal that depends on the number of illuminated pixels.
The system has a permanent calibration and guarantees maximum precision and stability
at all times.
Every sensor features two interfaces (see figure 3.1).
1. Interface P (RS 232):
programming interface for configuring the measurement modes and for visualizing the
measurement values.
2. Interface M12 (process interface):
data for the control system are transmitted via this interface. Depending on the device
model used, the measurement values are output either as an analog current/voltage
signal or as digital, serial information (RS 232, RS 422).
Depending on the device model used, not all measurement values are available at the P and
M12 interfaces:
• The analog interface can only output one measurement value at a time.
• The digital interface can transmit any number of measurement values.
4.2 Optical data
Table 4.1: Optical data
GS 754B
Output modes 1 … 5 Output mode 7 (default)
Measurement range 25mm 25mm
Mouth width 27mm/98mm 27mm/98mm
Mouth depth 42mm 42mm
Resolution ≤0.1mm over the entire measurement range ≥0.014mm per measurement level
Smallest object ≥0.5mm ≥0.5mm
Light source infrared LED infrared LED
Wavelength 850nm 850nm

Device description
Leuze electronic GS 754B 9
TNT 35/7-24V
4.3 LED indicators
Table 4.2: LED indicators
LED Meaning
green, continuous light Ready
green, flashing Interference

Applications
10 GS 754B Leuze electronic
5 Applications
5.1 Diameter determination
Depending on which interface is used, data for up to three objects can be output. Data for
more than one object can only be transmitted via the serial interface. The analog value is
always based on the edge or diameter information.
Figure 5.1: Diameter determination application example
3 2 1

Applications
Leuze electronic GS 754B 11
TNT 35/7-24V
5.1.1 ASCII representation via RS 232 (P and M12 interfaces)
Figure 5.2: Diameter determination - Detection of 1, 2 or 3 objects
)
Table 5.1: ASCII representation, output modes 1 … 5
Example for xxx: 123 (12.3mm)
5.1.2 Binary representation via RS 232 (P and M12 interfaces)
Due to the fast output of measurement values, only data for single-object detection can be
output in this output mode. The measurement values cannot be displayed on the screen
(see chapter 7.2.2).
1 object 2 objects 3 objects
Transmitter Transmitter Transmitter
Receiver Receiver Receiver
Parameter ASCII output data via S1 and S2
Q,q Single-object detection Middle pos. : xxx Diameter: xxx
W,w Detection of two objects Middle pos. : xxx Diameter: xxx
Middle pos. : xxx Diameter: xxx
E,e Detection of three objects Middle pos. : xxx Diameter: xxx
Middle pos. : xxx Diameter: xxx
Middle pos. : xxx Diameter: xxx
1
2
1
3 2 1

Applications
12 GS 754B Leuze electronic
5.2 Edge measurement and height verification
With this measurement, the sensor expects only one edge within the measurement field. If
more or fewer edges are detected by the system, depending on the configuration (see
chapter 6.4), this leads to an error message.
Figure 5.3: Edge measurement and height verification
Figure 5.4: Edge measurement - Detection of 1 edge
Various configurations are possible with this measurement (see chapter 6.4).
The following only applies to devices with an analog interface:
1. Linear edge measurement over the entire measuring range (s. point 8)
2. Teach-in edge measurement with 5V-output at teaching point
1 edge
Transmitter

Applications
Leuze electronic GS 754B 13
TNT 35/7-24V
5.3 Width measurement
To measure the width of strip material, two GS 754B CCD forked photoelectric sensors can
be used mutually opposed from one another.
Figure 5.5: Width measurement
Each forked photoelectric sensor relays an edge position which can be extrapolated to the
total width when the distance of the sensors vis-à-vis one another is known in the control.
In conjunction with this, time synchronization of the measurement data is ensured via PIN 2
as a trigger input. If the control generates a LOW -> HIGH signal change at the trigger inputs,
then both forked photoelectric sensors simultaneously each start an output cycle.

Device configuration
14 GS 754B Leuze electronic
6 Device configuration
6.1 General information
To configure the GS 754B forked photoelectric sensor, you require a PC with an RS 232
interface and a terminal program with the following setting. For this, use the corresponding
KB-ODS 96-1500 cable (part no. 50082007).
6.2 Terminal program
Any terminal or modem program that can access the serial interface(s) of your PC can be
used for the configuration.
Under Microsoft® Windows® 95/98/NT/2000, you can use the HyperTerminal, for example.
6.2.1 Basic configuration of the terminal program (interface P)
Table 6.1: Basic configuration of the terminal program (interface P)
Transmission rate 9600bit/s
Data bits 8
Parity None
Stop bits 1
Protocol None

Device configuration
Leuze electronic GS 754B 15
TNT 35/7-24V
6.3 Configuration of the measurement, analysis and output procedures
over interface P
The appropriate configuration is activated by entering ASCII characters. Letters may be
entered in either capital or lowercase form.
6.3.1 Configuration table for GS 754B
ASCII commands Available for interface
Output mode Object type
"!" - perforated objects
"?" - homogeneous objects
"%" - partially transparent,
translucent objects
1 output cycle approx. 3000ms output cycle approx. 700ms serial and analog
2 output cycle approx. 1000ms output cycle approx. 250ms serial and analog
3 output cycle approx. 500ms output cycle approx. 130ms serial and analog
4 output cycle approx. 250ms output cycle approx. 70ms serial and analog
5 output cycle approx. 100ms output cycle approx. 35ms serial and analog
6 reserved reserved
7 (default) output cycle approx. 12ms output cycle approx. 3ms serial and analog
Averaging
M,m averaging across the specified output cycle period serial and analog
A,a output of individual measurement value (default) serial and analog
Object number
Q,q single-object measurement (default) serial (only modes 1-5)
W,w measurement of two objects serial (only modes 1-5)
E,e measurement of three objects serial (only modes 1-5)
Evaluation process
= diameter detection serial and analog
- edge detection (default) serial and analog
Object type
! perforated objects serial and analog
? homogeneous objects (default) serial and analog
% semi-transparent, translucent objects serial and analog
Reset
R,r reset with config. switching output (7,a,-,o,?)
reset with config. teach input (7,a,-,t,?)
serial and analog

Device configuration
16 GS 754B Leuze electronic
Table 6.2: Parameterizing commands GS 754B
By entering the ASCII character "R", the state on delivery is restored. "R", however, has no
effect on the configuration of the switching function and the switching level.
Notice
The descriptions of the PIN 2 switching functions (chapter 6.4.3 et seq.) always relate to the
PNP switching level.
If the PIN 2 switching level is configured to NPN, all levels must be inverted.
Edge assignment for analog output (single-object measurement)
D,d object diameter analog
$ edge, middle analog
( inner edge (default) analog
) outer edge analog
Function PIN 2
T,t teach input function analog
O,o switching output function serial and analog
S, s synchronization / trigger input function serial and analog
L, l activation input function (LED transmitter ON) serial and analog
Switching function PIN 2 1)
< standard function (default) (chapter 6.4.6) serial and analog
> standard function, inverted (chapter 6.4.6) serial and analog
* photoelectric sensor function, dark switching
(presence monitoring)
serial and analog
# photoelectric sensor function, light switching
(presence monitoring)
serial and analog
Switching level PIN 2
P,p PNP switching output (default) serial and analog
N,n NPN switching output serial and analog
G,g push-pull switching output serial and analog
1) relative to the PNP switching level; refer to the following note.

Device configuration
Leuze electronic GS 754B 17
TNT 35/7-24V
6.4 Special configurations
6.4.1 Edge measurement for perforated objects
With this function, net-like objects, e.g. fabric, can be detected.
Here, the first edge of the object is output as the measurement value. All other edges are
suppressed. In this configuration the number of edges is not checked. Error messages are
not output.
Figure 6.1: Edge measurement for perforated objects
Required ASCII commands:
Object number
Q,q single-object measurement (default)
Evaluation process
- edge detection (default)
Object type
! perforated objects
Transmitter
Edge

Device configuration
18 GS 754B Leuze electronic
6.4.2 Changeover of the edge assignment for single-object measurement
Only one piece of edge information can be output via the analog interface. With single-object
measurement, the sensor sees two edges. Using these edges, information such as object
diameter and object middle can be calculated. These edge assignments can be configured.
Figure 6.2: Changeover of the edge assignment for single-object measurement
ASCII commands for changing over the edge assignment:
Edge assignment for analog output (single-object measurement)
D,d object diameter
$ edge, middle
( edge, inside (default)
) edge, outside
Transmitter
Edge, outside
Transmitter
Edge, middle
Transmitter
Edge, inside
Transmitter
Object diameter