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
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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

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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

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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.

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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.

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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

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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

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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.

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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.

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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.