FMS EMGZ321 Series Manuale utente

Operating Manual EMGZ321

Digital microprocessor controlled

Double Channel Tension Measuring Amplifier

Version 2.19 10/2015 NS

Firmware Version V2.11 (from S/N 11263xx)

This operation manual is also available in German.

Please contact your local FMS representative.

Diese Bedienungsanleitung ist auch in Deutsch erhältlich.

Bitte kontaktieren Sie Ihren nächstgelegenen FMS Vertreter.

Operating Manual EMGZ 321

12.03.2020 2

Table of Contents

1Safety Instructions..................................................................................... 4

1.1 Description Conditions 4

1.2 List of Safety Instructions 5

2System Description.................................................................................... 6

2.1 Functional Description 6

2.2 EMGZ321 Amplifier and its Subunits 7

2.3 EMG321 Sub Types 8

3Quick Installation Guide............................................................................ 9

3.1 Preparations for Set-up 9

3.2 Installation Procedure 9

4Installation and Wiring............................................................................ 10

4.1 Mounting the Force Measuring Roller 10

4.2 Mounting the EMGZ321 10

4.3 Wiring the Tension Monitoring System 11

4.4 Screw Terminal Arrangement 12

4.5 Connection of the Cable Shield 13

4.6 Digital Inputs 13

4.7 Relays Outputs 14

4.8 Opening the Housing 14

5Configuring the System........................................................................... 15

5.1 Description of the Operating Panel 15

5.2 Preparations for System Configuration 16

6Operation.................................................................................................. 18

6.1 Operating the EMGZ321 over the Front Panel 18

6.2 Display Value Selection State 19

6.3 Offset Compensation Procedure 19

6.4 Calibration Methods 20

6.5 Calibration Procedure: 20

7Parameter Setting over the Front Panel ............................................... 22

7.1 Basic Instructions for Parameter Setting 22

7.2 Amplifier Parameter Group 22

7.3 Description of Amplifier Parameters 22

7.4 Outputs Parameter Group 23

7.5 Description of Output Parameters 23

7.6 Relay Parameter Group 25

7.7 Description of Relay Parameters 25

7.8 System Parameter Group 27

7.9 Description System Parameters 27

7.10 Reset to Default Parameters 30

7.11 Complete Parameter List 30

8Parameter Setting via a PC .................................................................... 34

8.1 Parameterisation in an Ethernet Network via Web Browser 35

8.2 Connecting the EMGZ321 Amplifier with a PC (Peer-to-Peer) 38

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9Mechanical Dimensions.......................................................................... 40

10 Trouble Shooting...................................................................................... 42

11 Technical Specification ........................................................................... 43

11.1 Technical Data 43

11.2 Input / Output Configuration 43

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1Safety 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

Some of the wire terminals in the power supply board of the EMGZ321W.ACV are

under a tension of 85-264 VAC. Mortal danger! Only specially instructed and

qualified personnel should handle this amplifier unit. In any case the power supply

must be disconnected from the main supply before opening the housing.

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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2System Description

2.1 Functional Description

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

analogue outputs and can be evaluated by analogue instruments, a PLC or

equivalent devices.

Fig. 1: Application example of EMGZ321 E321004e

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2.2 EMGZ321 Amplifier and its Subunits

As a plug & play unit all functions of the EMGZ321 can be configured very easily via

a user-friendly control panel and two lines LCD. Tension reference values and all

other parameters and functions can be set with keys or remotely via a web browser.

The amplifier is then either connected to a network or via a peer-to-peer

configuration to a laptop or local PC. All parameters are stored in a none-volatile

EEPROM memory.

Automatic offset compensation and calibration, digital signal filtering, function

along with a lot of other features creates a very powerful tension monitoring system.

The fundamental characteristics of the EMGZ321 remain its operation simplicity

and reliability even under challenging operating conditions.

Fig. 2: Block diagram EMGZ321 E321002e

Display and Operation Panel

A dual-line LCD display with 8 characters each line and a well arranged control

panel make the EMGZ321 very easy to set-up and operate. All parameters and

functions are accessible trough the wind rose key pad and three buttons.

Strain gauge amplifier

The build-in strain gauge amplifier delivers a highly accurate supply voltage (5VDC,)

for 2 force sensors. The force sensors can be wired using a 4- wire circuitry.

A highly accurate differential amplifier rises the mV sensor signal up to 10V.

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Force Sensors

The force sensors are based on the flexion beam principle. The flexion is measured

by strain gauges and transmitted to the electronic unit as mV signal. Due to the

wheatstone bridge configuration of the strain gauges, the measured value is

proportional to the power supply. EMGZ4321 provides a very accurate power supply

for the wheatstone bridge.

Interface

The EMGZ321 can be embedded in an Ethernet network and the communication is

via a web browser (Ethernet explorer 7 or higher)

2.3 EMG321 Sub Types

EMGZ321.R / .S / .W / .W.ACV

The tension amplifier EMGZ321 series is available in three different housing

options.

EMGZ321.R: Rail mount housing

EMGZ321.S: Panel mount housing

EMGZ321.W / W.ACV Wall mount housing with and without supply unit

Detailed information about the mechanical dimensions refer to the outline drawings

Fig. 30 to 32.

EMGZ321.W.ACV

The tension amplifier type EMGZ321.W.ACV includes a separate power supply that

supports voltage of 85V up to 264V. It transforms the AC input voltage into DC 24V

for the internal system components.

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3Quick Installation Guide

In a Plug & Play configuration the set-up of the EMGZ321 and 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 “3.5 Wiring the Amplifier“)

4. If required, determine special parameters (ref. to “5.2 Parameterization for

System Configuration”)

3.2 Installation Procedure

1. Mount your force maesuring roller to the machine frame.

2. Wire the force measuring sensors (ref. to “4.3 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 4.1 to 4.4)

6. If required, do additional settings (ref. to “5.2 Parameterization for System

Configuration”)

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4Installation 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.

4.1 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.

4.2 Mounting the EMGZ321

The EMGZ321 series is available in 3 different housing options. The respective

mechanical dimensions of the different housings can be seen in paragraph 15.

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