Vishay G4 User manual

G4 Multi Channel
Force Instrument
Program version 101.1.0.0
Technical Manual
RM type
GB

G4 Multi Channel Force Instrument
1. Introduction
Manual updates .....................................1-1
General ..................................................1-1
Functions ...............................................1-2
Maintenance ..........................................1-4
Safety information ..................................1-4
Technical data .......................................1-5
Ordering information ..............................1-12
2. Installation
Mechanical installation ...........................2-1
Electrical installation ..............................2-2
CPU unit.................................................2-3
VIEWPAN module .................................2-5
WF IN, WF IN2 and HS WF2 .................2-6
AOUT1 and AOUT4 ...............................2-9
DIO8 ......................................................2-10
Profibus-DP Fieldbus Adaptor ................2-11
DeviceNet Fieldbus Adaptor ..................2-13
3. Instrument Functionality
General...................................................3-1
Function Block........................................3-1
4. Set-up
General ..................................................4-1
Operators interface ................................4-2
Menu structure .......................................4-6
Parameters ............................................4-8
5. Calibration
General ..................................................5-1
Common parameters .............................5-2
Calibration using datasheet ...................5-3
Using parameters values from
a previous calibration ............................. 5-4
Calibration with known forces.................5-5
6. Operation
General ..................................................6-1
Power supply .........................................6-1
Power-up sequence ...............................6-1
Operating display ...................................6-2
Security locks ........................................6-3
Zero setting ............................................6-3
Main menu .............................................6-4
Level supervision ...................................6-5
Use of inputs and outputs ......................6-6
Filter function .........................................6-7
7. Communication
General ..................................................7-1
Serial interface........................................7-1
Modbus RTU Slave ................................7-1
Modbus TCP Slave ................................7-2
Modbus protocol ....................................7-3
Fieldbus interface....................................7-28
8. Remote Access
General ..................................................8-1
Browser requirements.............................8-1
Using the Remote Access ......................8-2
Security...................................................8-2
Remote Access Login and Logout ..........8-3
Remote / Local Access ...........................8-6
Remote Set-up........................................8-7
Remote Access Maintenance .................8-10
9. Maintenance
General ..................................................9-1
Diagnostics .............................................9-1
File handling ...........................................9-4
Create Backup .......................................9-5
Restore Backup .....................................9-5
Set Default..............................................9-5
Program Upgrade ...................................9-5
Instrument Restart ..................................9-6
10. Troubleshooting
General...................................................10-1
Error codes ............................................10-1
Appendix
Declaration of Conformity........................App.1
Contents

Technical Manual
PRECAUTIONS
READ this manual BEFORE operating or servicing this instrument.
FOLLOW these instructions carefully.
SAVE this manual for future reference.
DO NOT allow untrained personnel to operate,
clean, inspect, maintain, service, or tamper with
this instrument.
WARNING
Only permit qualified personnel to install and service this instrument.
Exercise care when making checks, tests and adjustments
that must be made with power on.
Failing to observe these precautions can result in bodily harm.
!

G4 Multi Channel Force Instrument
1-1
1. Introduction
Manual updates
This manual is updated for the 101.1.0.0 program version. In this program is a web
server added which enables for the user to access the instrument using a PC running a
web browser. This manual can also be used for the previous program version
(101.0.0.0) where the only differences are the ‘Network Config.’ menu, the Instrument
restart functionality and the remote access part.
General
The G4 Instrument is a high performance multi channel force indicator intended for
industrial systems.
Its basic function is to convert the signals from strain gauge transducers to useful force
information. Transducer excitation is included as well as parameter controlled signal
processing, indication of output levels, error supervision and operation of optional
external equipment. The instrument can be equipped with up to 6 synchronized force
channels.
The instrument is modular and can be equipped with different types of I/O units to
match the demands in the specific applications. There are strain gauge transducer
interface modules, a digital input/output module, analog output modules.
Internal solid-state outputs in the instrument can be used for output functions from level
supervision or ‘In process’ indication, reporting the operating status of the G4
Instrument.
The CPU unit in the instrument has several communication interfaces. It has two serial
communication ports, an Ethernet port, an USB port and a fieldbus slot.
Several G4 Instruments can be controlled from a master computer or PLC.
Serial communication interfaces are RS-485 and RS-232 using Modbus RTU protocol.
The Ethernet interface is using Modbus TCP and the optional fieldbus interface uses
Profibus or DeviceNet.
CPU
unit
I/O
unit
1
I/O
unit
2
I/O
unit
3
Service panel with
Power supply unit
Backplane
DIN rail mount version
Enclosure & mounting accessories
Block structure of a G4 Instrument

Technical Manual
1-2
It is possible to load new software into the instrument using the USB port.
All functions in the G4 Instrument are controlled by set-up parameters. Setting of
parameter values can be performed via a service panel with display and 4 keys
(VIEWPAN module).
The Rail mount instrument type is powered with 24 V DC. All input and output signals
are galvanically isolated from the power supply by operational insulation.
Functions
Measurement with strain gauge transducers.
Both excitation voltage and output signal are measured at the transducer to avoid
influence from voltage drop in the connection cable. Excitation to the transducer, from
the G4 Instrument is provided over separate wires.
A shielded 6-wire cable must be used to connect a distant transducer to the instrument.
A/D conversion.
The analog signals from the transducer are converted to digital form and filtered
to give an internal transducer signal with high resolution.
Calculation.
The transducer excitation and signal values are combined to form an internal
transducer signal, representing the load on the transducer. Influenced by calibration
data, this signal is converted to a digital measurement value, the force value, which
can be presented at the local display window and at external equipment.
Error supervision.
As long as the error supervision detects no error, the signal ‘In process’ is present
but if an error is detected, ‘In process’ will be off and a specific error message will be
displayed. ‘In process’ can be set to control any digital output. Note that there are
force channel specific and instrument specific error detection.
Levels.
32 level comparators in the instrument can be set to switch at defined signal levels with
any selected hysteresis added, meaning that the switch level can be different for
increasing and decreasing signal. It’s possible to set level switching delays. Output
signals from these comparators are available on the serial communication. The level
comparator outputs can also be set to control digital outputs from the instrument.
Communication.
The G4 Instrument utilizes the serial interface, Ethernet and a fieldbus interface for
communication with control computer. The serial interface consists of a RS-232
(COM1) connection and a RS-485/RS-422 (COM2) connection. COM2 can be used
with 2- or 4-wire connection.
Force values, web tension values, level status, error status etc. can be collected and
commands given through the communication interfaces. Modbus RTU protocol is used
for the serial interfaces and Modbus TCP for the Ethernet connection. For the optional
fieldbus interface Profibus or DeviceNet can be used.

G4 Multi Channel Force Instrument
1-3
Instrument modes.
In normal operation mode the G4 Instrument is presenting the measurement values on
the front panel (VIEWPAN) alphanumerical display. Values for one Function Block at a
time can be shown. During parameter set-up the instrument will continue normal
operation. However if hardware set-up parameters have been changed the instrument
will be restarted.
The operator will always be notified before the instrument is restarted.
Parameter setting.
In the instrument all operating functions are controlled by set-up parameters with
numerical values, string values, or pre-selected values from a list of alternatives.
Parameter set-up is performed by the keys at the service panel (VIEWPAN).
Presentation.
The instrument can present measured or calculated values, parameter settings etc.
at the front panel. An extensive system of menus gives the possibility to present
various information about the instrument. The VIEWPAN module can present one or
two values at a time.
Measured or calculated values, status of levels and so on, can be transferred to
external equipment via the different communication interfaces (some are optional).

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1-4
Maintenance
The G4 instrument needs no maintenance, performed by the end-user. Any service
or repair work must be performed by qualified personnel.
Contact your supplier.
Cleaning
Before cleaning the G4, break the power connection to the instrument.
Use a soft cloth to clean the exterior of the instrument.
Safety information
Utilization.
Before connecting power to the instrument, check that all fixation screws
at the modules are tightened so that the instruments functional grounding
by the housing is maintained.
The instrument may only be utilized for the measurement and control functions,
described in this Technical Manual. It is especially important to adhere to the load limits
of the input/output connectors. We accept no responsibility for any damage arising from
improper operation.
Any changes to the instrument, which causes any function changes, may only be
carried out by the manufacturer, or after discussion with and permission by the
manufacturer.
Meaning of symbols, used in this manual
Direct current.
!
Caution, risk of danger. Documentation needs to be consulted.

G4 Multi Channel Force Instrument
1-5
Technical data
Enclosure type RM – Rail Mount enclosure
Dimensions
Enclosure design Aluminium housing with plastic frames
Rail mount DIN 46 277/3 and DIN EN 50022 (w=35 mm, h=7.5 mm)
Display, keyboard See VIEWPAN module
Environmental
Temperature range
Rated performance: -10 to +50 °C
Storage: -25 to +85 °C
Relative humidity Max. 85% up to 40 °C, decreasing linear to 50% at 50 °C
Rated pollution Pollution degree 2
Protection IP20. For indoor use.
Altitude Up to 2000 m
EMC, RF CE (Industrial), OIML

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1-6
VIEWPAN
Module type Display/keypad interface with integrated power supply for the
complete instrument.
Input voltage 24 V ±15% including fluctuations, 40W
Impulse withstand (overvoltage)
category I of IEC 60364-4-443
Output voltage 24 V output 0.1 A
The same voltage as input voltage
Display
2 x 16 character LCD with backlight
Keyboard 4 keys
CPU
Module type CPU module
RTC backup battery Manufacturer Type
Lithium battery Panasonic-BSG CR2032
CR2032 3V GP Batteries CR2032
Varta CR2032 (V)
COM1 (RS232) and
COM2 (RS485) For process data and control
Isolated by operational insulation
Protocol Modbus RTU
Baud rate Up to 115 kbaud
Fieldbus For process data and control (optional)
Types Profibus or DeviceNet
USB Version 1
Keyboard USB keyboard for PC
USB Memory USB type for PC
For backup and restore of set-up parameters
For change to a new program version
Ethernet 10/100BASE-T. For process data and control
Protocols Modbus TCP, ftp, http
RJ45 Indications Green LED: Transmitting. Yellow LED: Receiving.