FMS EMGZ21 Series User manual

Operating Manual EMGZ321._.EIP
Left / Right Tension Measuring Amplifier with
integrated EtherNet/IP Interface
Version 2.21 07/2017 NS
Firmware Version V2.20
Diese Bedienungsanleitung ist auch in Deutsch erhältlich.
Bitte kontaktieren Sie Ihren nächstgelegenen FMS Vertreter.
© by FMS Force Measuring Systems AG, CH-8154 Oberglatt – All rights reserved.

Operating Manual EMGZ 321.EIP
19.10.2017 2
Table of Contents
1Safety Instructions ..................................................................................... 4
1.1 Description Conditions 4
1.2 List of Safety Instructions 5
2System Description .................................................................................... 6
2.1 Product Range 6
2.2 Block Diagram 6
2.3 Functional Description EMGZ321 6
2.4 System Description EMGZ321._.EIP 7
3Quick Installation Guide ............................................................................ 8
3.1 Preparations for Set-up 8
3.2 Installation Procedure 8
3.3 Installation and Wiring 9
3.4 Mounting the Force Measuring Roller 9
3.5 Mounting the EMGZ321._.EIP 9
3.6 Wiring the Tension Monitoring System 10
3.7 Screw Terminal Arrangement 11
3.8 Connection of the Cable Shield 12
3.9 Digital Inputs 12
3.10 Relays Outputs 13
4Configuring the System ........................................................................... 14
4.1 Description of the Operating Panel 14
4.2 Preparations for System Configuration 15
5Network Connection over EtherNet/IP ..................................................17
5.1 EtherNet/IP Specification: 17
5.2 Amplifier Functionality over EtherNet/IP 17
5.3 Integration of EMGZ321._.EIP in an Ethernet Network 17
5.4 Configuration of the Amplifier over EtherNet/IP 18
5.5 Calibration over EtherNet/IP 18
6Integration in an Allen-Bradley PLC .......................................................19
6.1 Hardware Environment 19
6.2 IP Configuration 19
6.3 Integration in a Project 19
6.4 Access to the Tension Values 22
7Operation ................................................................................................... 24
7.1 Operating the EMGZ321 over the Front Panel 24
7.2 Display Value Selection State 25
7.3 Offset Compensation Procedure 25
7.4 Calibration Methods 26
7.5 Calibration Procedure: 26

Operating Manual EMGZ 321.EIP
19.10.2017 3
8Parameter Setting over the Front Panel ............................................... 28
8.1 Basic Instructions for Parameter Setting 28
8.2 Amplifier Parameter Group 29
8.3 Description of Amplifier Parameters 30
8.4 Outputs Parameter Group 31
8.5 Description of Output Parameters 33
8.6 Relay Parameter Group 35
8.7 Description of Relay Parameters 36
8.8 System Parameter Group 38
8.9 Description System Parameters 40
8.10 Reset to Default Parameters 43
8.11 Complete Parameter List 43
9Parameter Setting via a PC..................................................................... 47
9.1 Parameterisation in an Ethernet Network via Web Browser 48
9.2 Connecting the EMGZ321 Amplifier with a PC (Peer-to-Peer) 53
10 Mechanical Dimensions .......................................................................... 56
11 Trouble Shooting....................................................................................... 58
12 Technical Specification............................................................................ 59
12.1 Technical Data 59
12.2 Input / Output Configuration 59

Operating Manual EMGZ 321.EIP
19.10.2017 4
1 Safety Instructions
All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to prevent
damage to the equipment connected to it. If equipment is used in a manner not
specified by the manufacturer, the protection provided by the equipment may be
impaired.
Do not stress the equipment over the specification limits neither during assembly
nor operation. To do so can be potentially harmful to persons or equipment in the
event of a fault to the equipment.
1.1 Description Conditions
a) Danger of health injury or loss of life
Danger
This symbol refers to high risk for persons to get health injury or loss life. It has to
be followed strictly.
b) Risk of damage of machines
Caution
This symbol refers to information, that, if ignored, could cause heavy mechanical
damage. This warning has to be followed absolutely.
c) Note for proper function
Note
This symbol refers to an important information about proper use. If not followed,
malfunction can be the result.

Operating Manual EMGZ 321.EIP
19.10.2017 5
1.2 List of Safety Instructions
In order to improve the natural convection and keep the temperature of the
amplifiers that are mounted in a cabinet, to a minimum, a distance of at least
15mm (0.6”) between the devices must be kept
Proper function of the FMS tension controllers is only guaranteed with the
recommended application of the components. In case of other arrangement,
heavy malfunction can be the result. Installation instructions on the following
pages must be followed strictly.
Local installation regulations are to preserve safety of electric equipment. They
are not taken into consideration by this operating manual. However, they have to
be followed strictly.
Bad earth connection may cause electric shock to persons, malfunction of the
total system or damage of the control unit. It is vital to ensure a proper earth
ground connection.
The processor board is mounted directly behind the operation panel. Improper
handling of the electronic boards may cause damage to the fragile equipment.
Don’t use rough tools such as screwdrivers or pliers! Operators handling the
electronic boards must wear a well earthed bracelet in order to discharge static
electricity.

Operating Manual EMGZ 321.EIP
19.10.2017 6
2 System Description
2.1 Product Range
The tension measuring amplifier series EMGZ21 is available in two versions:
● EMGZ321._ with standard analogue outputs
● EMGZ321._.EIP with analogue outputs and integrated EtherNet/IP interface
Both versions are available in three different housing / mounting options:
● EMGZ321.R rail mount housing
● EMGZ321.S panel mount housing
● EMGZ321.W wall mount housing
2.2 Block Diagram
Fig. 1: Block diagram EMGZ321 E321002e
2.3 Functional Description EMGZ321
The EMGZ321 is a double channel strain gauge amplifier for a single measuring
point. The material tension can be measured on both sides of the measuring roller
independently.
The 2 force sensors of the measuring point measure the tension force in the
material and transmit the measuring value as a mV signal to the electronic unit
EMGZ321. The electronic unit amplifies the mV signal of each force sensor
independently. This signal will be fed to the A/D converter. The microprocessor does
then all application specific calculations such as offset, gain, low-pass filter, limit
switches, etc.
A sum value (A+B) and a difference value (׀A-B׀) are calculated from the force
values of the sensors A and B. The resulting feedback values are shown in the
display in [N] or the chosen unit. In addition, the feedback values are provided at the

Operating Manual EMGZ 321.EIP
19.10.2017 7
analogue outputs and can be evaluated by analogue instruments, a PLC or
equivalent devices.
Fig. 2: Application example of EMGZ321 E321020e
2.4 System Description EMGZ321._.EIP
The amplifier EMGZ321._.EIP offers in addition to his standard features the
possibility to be used as an EtherNet/IP device in a corresponding network.
EtherNet/IP bases on the Ethernet TCP/IP and the UDP technology as well as on the
CIP (Common Industrial Protocol). The amplifier can be embedded in a standard
Ethernet infrastructure. Its fast data rate with cycle times down to 2ms makes the
device ideal for applications in automated assembly and production lines. It allows
the measurement of web tension and its transmission over Ethernet to a controller
in real time. Configuration of the amplifier takes place either over the EtherNet/IP, a
web browser or over the operating panel.
Fig. 3: System Configuration EMGZ321._.EIP integrated in EtherNet networkE321021e

Operating Manual EMGZ 321.EIP
19.10.2017 8
3 Quick Installation Guide
In a Plug & Play configuration the set-up of the EMGZ321._.EIP and the
corresponding force sensors is straight forward and limited to only the offset
compensation and the calibration procedure.
3.1 Preparations for Set-up
1. Read the Operation Manual of your force measuring sensors and amplifier
2. Check your requirements such as:
– Desired output configuration 0…10V, ±10V or 0/4… 20mA
– Display unit of nominal force
3. Draw the wiring diagram for your configuration (ref. to 3.6 “Wiring the Tension
Monitoring System“)
4. If required, determine special parameters (ref. to 8“Parameter Setting over the
Operation Panel”)
3.2 Installation Procedure
1. Mount your force maesuring roller to the machine frame.
2. Wire the force measuring sensors (ref. to 3.6 “Wiring the Tension Monitoring
System“)
3. Connect the amplifier to the power supply.
4. The power supply voltage must be in the range 18 to 36V DC.
5. Perform offset compensation and calibration (ref. to paragraphs 7.3 to 7.4)
6. If required, do additional settings (ref. to “8“Parameter Setting over the Operation
Panel”)
7. Integrate the amplifier in your Ethernet network respectively your PLC.

Operating Manual EMGZ 321.EIP
19.10.2017 9
3.3 Installation and Wiring
Caution
In order to improve the natural convection and keep the temperature of the
amplifiers that are mounted in a cabinet, to a minimum, a distance of at least
15mm (0.6”) between the devices must be kept.
Caution
Proper function of the FMS tension amplifier is only guaranteed with the
recommended application of the components. Other arrangements, can cause
heavy malfunctions. Installation instructions on the following pages must strictly be
followed.
Caution
Local installation regulations are to preserve safety of electric equipment. They are
not taken into consideration by this operating manual. However, they have to be
followed strictly.
3.4 Mounting the Force Measuring Roller
Mounting of the force sensors is done according to the FMS installation manual
which is delivered together with the force sensors.
3.5 Mounting the EMGZ321._.EIP
The EMGZ321 series is available in 3 different housing options. The respective
mechanical dimensions of the different housings can be seen in chapter 10.

Operating Manual EMGZ 321.EIP
19.10.2017 10
3.6 Wiring the Tension Monitoring System
Use the original FMS cables to connect the system components together.
The connection between the force sensors and the electronic unit is done with a
2x2x0.25 mm2[AWG 23] cable. The wiring diagrams show how the wiring to the
terminals of the electronic unit is done.
Fig. 4: Wiring diagram EMGZ321 E321001e
Caution
Bad earth connection may cause electric shock to persons, malfunction of the total
system or damage of the control unit. It is vital to ensure that there is a proper and
secure earth ground connection.

Operating Manual EMGZ 321.EIP
19.10.2017 11
3.7 Screw Terminal Arrangement
Fig. 5: Screw terminal arrangement on processor board E321003e

Operating Manual EMGZ 321.EIP
19.10.2017 12
3.8 Connection of the Cable Shield
Cable shields must be
connected as indicated in the
wiring diagram (see Fig. 4 and
5). The shield should be
connected only to the
amplifier side. On the force
sensor side, the shield should
stay open. Other
arrangements may cause
ground/earth loops which
may interfere with the
measuring signal. Malfunction can be the results. If a housing type with PG glands is
used, one must pay heed to a proper connection of the shield. Skinning of the cable and
shield handling are indicated in Fig. 6.
Note
Force sensors deliver a signal of a few mV and are therefore susceptible to external
influences. To increase immunity to interfering use one twisted pair cable for
+signal and –signal. This signal cables must be separated from power lines.
Note
Connecting the shield of the signal cable to the electronic unit and to the force
sensor may cause ground loops which may interfere with the measuring signal.
Malfunction can be the result. The shield should be connected only to the electronic
unit. On the „force sensor side“, the shield should stay open.
3.9 Digital Inputs
The EMGZ321._.EIP amplifier provides 2 digital inputs for the special functions of
switching between two different gain factors.
The digital inputs are level triggered. A threshold change activates the gain switch:
• In sensor A from gain factor 1 to gain factor 2
• In sensor b from gain factor 1 to gain factor 2
Signal Name Terminal # Sensor Threshold low Threshold high
Dig. In 1 5 A Gain factor 1 Gain factor 2
Dig. In 2 6 B Gain factor 1 Gain factor 2
Fig. 6: Shield connection E470009e

Operating Manual EMGZ 321.EIP
19.10.2017 13
3.10 Relays Outputs
The EMGZ321._.EIP amplifier provides 2 programmable relay outputs. The outputs
are software controlled. Electrically they are potential-free. Each relay output can
individually be configured to check violations of force limits. The outputs are
configured in chapter 8.6 “Relay Parameter Group”.
Following functions can be assigned to each output:
• Indicate if force limit of sensor A has be violated
• Indicate if force limit of sensor B has be violated
• Indicate if the sum of the forces of sensor A+B has be violated
• Indicate if the absolute value of difference ׀A-B׀has be violated
For more details about the functions refer to paragraph 8.7 “Description Relay
Parameter Group”.
Hardware access via screw terminals (see Fig. 4 and 5)
Signal Name Terminal #
Relay 1/1 7
Relay 1/2 8
Relay 2/1 9
Relay 2/2 10

Operating Manual EMGZ 321.EIP
19.10.2017 14
4 Configuring the System
The amplifier EMGZ321._.EIP can be configured over the operation panel (chapter
8), over a PC (web interface, chapter 9) or over EtherNet/IP. The basic configuration
is performed over the operation panel.
4.1 Description of the Operating Panel
Fig. 7: View of the Operating Panel EMGZ321.W.EIP E321005
The keys on the operating panel have the following functions:
Key Key function during operation
Enter Offset Compensation Procedure
Enter Calibration Procedure
To enter the Parameter Setting Mode, press the key for longer
than 3 sec. The LED will light and the first parameter group will
appear on the LCD display indicating that you entered the mode.
The State Diagrams (Fig. 20 to 25) in paragraph 8“Parameter
Setting over the Front Panel” will help you to navigate in the
parameter setting mode.
Enter
Changes the parameter selection.
Increases the parameter values. Pressing the button increases
continuously the parameter value.
Decreases the parameter values. Pressing the button reduces
continuously the parameter value.
Fig. 8: Functions of the operation panel keys

Operating Manual EMGZ 321.EIP
19.10.2017 15
4.2 Preparations for System Configuration
In order to facilitate the configuration of the tension monitoring system it is
advisable to adapt some basic system parameters to the specific requirement of
the application.
1. Adopt password
2. Set the language on the display
3. Set measuring unit
Above features are changed in the 8.8 “System Parameter Group”. Please refer to
Fig. 17 to 19 to visualise the following parameter changing procedures:
A) Adopt Password
The password cannot be changed. It is always 3231. However, it can be adopted or
disabled. If adopted, the system will request the password for every parameter
change. If you wish to adopt the password, follow the following instructions:
1. Hold the key for longer then 3 sec. until you enter the Parametrisation State.
2. The display shows . Scroll the menu by pressing the key until you
are in the parameter group “System”.
3. Press . The display shows .
4. Press again . The display starts flashing indicating that you can now change
the parameter with the or keys.
5. To confirm your change by pressing the Enter key .
6. Press the key twice, if you want to return to the Operation State. If you
desire to change the language, continue with the steps below.
B) Change Language
The default setting for the language is English.
1. Press to select the Parameter Language
2. Press again . The display starts flashing indicating that you can now change
the parameter with the or keys.
3. Set your language
4. To confirm your change by pressing the Enter key .
5. To change the measuring units continue with next paragraph C)
6. Press the key twice, if you want to return to the Operation State. If you
desire to change the measuring unit, continue with the steps below.
Language
English
Password
No
Amp.
*******

Operating Manual EMGZ 321.EIP
19.10.2017 16
C) Change the Measuring Units
The default tension measuring unit is N (Newton). The user can, however, select
another unit before the system is calibrated..
1. Press to select the Parameter Unit.
2. Press again . The display starts flashing indicating that you can now change
the unit parameter with the or keys.
3. To confirm your change by pressing the Enter key .
4. Press the key twice to return to the Operation State.
Unit
N

Operating Manual EMGZ 321.EIP
19.10.2017 17
5 Network Connection over EtherNet/IP
The amplifier EMGZ321._.EIP is able to communicate with other devices over an
Ethernet network. CIP (Common Industrial Protocol) is used as the protocol for the
data link. The amplifier acts as a so called “Producer” and the machine control (or
PLC) as the “Consumer”.
5.1 EtherNet/IP Specification:
Physical layer: Ethernet IEEE 802.3.
Transport protocol: TCP/IP und UDP
Standard: CIP IEC 61158
Conformity: CPF 2 (Communication Profile Family 2) IEC 61784-1
5.2 Amplifier Functionality over EtherNet/IP
Basically all functions for configuration and calibration can be performed over
EtherNet/IP. Furthermore, the measured tension values are cyclically propagated
over the network and made available to the Consumer (PLC).
5.3 Integration of EMGZ321._.EIP in an Ethernet Network
In order to integrate the amplifier in an Ethernet network and enable data transfer
over it following conditions must be fulfilled:
✔ An EMGZ321 amplifier with the option EtherNet/IP (EIP) must be used.
✔ The IP-Address must be assigned in the fix address block and must be
unambiguously. It may only exist once in the network.
✔ The network mask must correspond with the used device configuration.
If these prerequisites are given, the controller will recognise the amplifier as an
EtherNet/IP device in the network and be able to communicate with it. The interface
information for EMGZ321._.EIP is defined in an EDS-file. The EDS file is only used as
documentation and cannot be imported into RSLogix 5000.
EDS-files for EMGZ321._. EIP can be downloaded from the FMS webpage.
Note
The device does not support the import of the EDS files. The import with
development software e.g. RSLogix5000 will generate error messages.
Utilize “Messages” to change parameter values of the device. Details are explained
in the sample file which is available for download on the FMS website.

Operating Manual EMGZ 321.EIP
19.10.2017 18
5.4 Configuration of the Amplifier over EtherNet/IP
EMGZ321._.EIP may, but need not be configured via EtherNet/IP. The Amplifier can
be configured by means of a controller. It is integrated in the same network, The
communication between machine control and amplifier is carried out with
dedicated software (e.g. RSLogix5000 from Rockwell). Please refer to the manual
of the respective controller.
There are three possibilities to configure the EMGZ321._.EIP. If the method over
EtherNet/IP is used, the other two options (operation panel or web interface) are
still possible but not meaningful. The EtherNet/IP method has then always priority
and overwrites any other configurations set by the other two methods.
If the configuration over EtherNet/IP is selected then messages from the PLC to the
EMGZ321 must be used.
How the messages are used, is described in shows the example program.
The example project EMGZ321_EIP_Example_Project_Vx.xx is available for download on the
FMS website.
Note
The configuration of the amplifier via EtherNet/IP must be used as commissioning
procedure. Continuously writing parameters on a cyclic base is not allowed and will
lead to communication problems and reduced the lifetime of the device.
5.5 Calibration over EtherNet/IP
Usually the calibration procedure for amplifier and load cells is carried out at the
commissioning of the machine. The two commands Offset and Calibration are
available for the calibration of the amplifier over EtherNet/IP. From case to case it
is to consider whether a calibration via web interface or operation panel is more
favourable. With difficult accessibility of the amplifier it might make sense to do the
calibration over EtherNet/IP.

Operating Manual EMGZ 321.EIP
19.10.2017 19
6 Integration in an Allen-Bradley PLC
Following chapters deal with the integration and operation of the EMGZ321._.EIP
amplifier with an Allen-Bradley PLC. The project software RSLogix5000 from Allen-
Bradley is required to program the PLC. Furthermore, it is assumed that a
development system with PC and corresponding development software RSLogix
5000 from Rockwell Automation is available and the programmer is familiar with
these tools..
6.1 Hardware Environment
The EMGZ321._.EIP must be connected to an Ethernet switch which in turn is in the
same network as the PLC. Only in this way a communication between amplifier and
PLC can take place. Several EMGZ321._.EIP amplifiers or other Erthernet devices
can be connected to the same network.
6.2 IP Configuration
In an industrial environment the IP addresses are normally assigned fix to the EIP
devices. This holds also for the EMGZ321._.EIP amplifier that needs a fix IP address
in the network. The IP address configuration must take place before the amplifier is
integrated in a network. This is done over the operation panel or over the web
interface.
The procedures are described in the state diagrams chapter 8.8 (Fig. 25) and
chapter 9 (Fig.34)
6.3 Integration in a Project
Before starting the development system RSLogix5000 the PLC and amplifier need
to be connected to the network and powered-up. Now a new project or an existing
project can be opened in RSLogix5000. Search in the tree structure Controller
Organizer for the listing Ethernet and make a right mouse click (see Fig. 10).

Operating Manual EMGZ 321.EIP
19.10.2017 20
In this example CompactLogixL23E-QB1B is used. If a different hardware is used,
one may find the listing Ethernet in another place.However, the principal approach
is always the same. After a right mouse click on Ethernet a dialog window will open
up. Left mouse click on New Module...and a new window will open up (see Fig.11).
Fig. 10: Controller Organisation E309021