Vega VEGAMET 625 User manual

Operating Instructions
VEGAMET 625
Double channel Hart signal conditioning
instrument
in out

Contents
1About this document
1.1Function ............................. 4
1.2Target group .......................... 4
1.3Symbolism used ....................... 4
2For your safety
2.1Authorised personnel .................... 5
2.2Appropriate use........................ 5
2.3Warning about misuse ................... 5
2.4CE conformity ......................... 5
2.5Safety information for Ex areas............. 6
2.6Environmental instructions ................ 6
3Product description
3.1Configuration.......................... 7
3.2Principle of operation.................... 8
3.3Adjustment ........................... 8
3.4Storage and transport ................... 9
4Mounting
4.1General instructions..................... 10
4.2Mounting information .................... 10
5Connecting to power supply
5.1Preparing the connection ................. 12
5.2Connection steps....................... 13
5.3Wiring plans .......................... 15
6Setup with the integrated indicating and adjustment
unit
6.1Adjustment system ..................... 17
6.2Setup procedure ....................... 18
6.3Menu schematic ....................... 28
7Setup with PACTware™
7.1Connecting the PC ..................... 35
7.2Parameter adjustment with PACTware™...... 38
7.3Setup web server/e-mail,remote enquiry...... 39
8Application examples
8.1Interface measurement with VEGAFLEX 67.... 40
8.2Pump control.......................... 41
8.3Tendency recognition.................... 43
2VEGAMET 625 -Double channel Hart signal conditioning instrument
Contents
28970-EN-060426

8.4Flow measurement ..................... 44
9Maintenance and fault rectification
9.1Maintenance .......................... 47
9.2Fault rectification ....................... 47
9.3Instrument repair ....................... 50
10 Dismounting
10.1Dismounting procedure .................. 51
10.2Disposal ............................. 51
11 Supplement
11.1Technical data......................... 52
11.2Dimensions ........................... 56
Note:
The operating instructions manual "RS232/Ethernet connec-
tion"as well as the additional instructions manual "Modbus-
TCP,VEGA ASCII protocol"is attached to instructions with
RS232/Ethernet interface.Here you will find further information
for setup.
VEGAMET 625 -Double channel Hart signal conditioning instrument 3
Contents
28970-EN-060426

1About this document
1.1Function
This operating instructions manual has all the information you
need for quick setup and safe operation.Please read this
manual before you start setup.
1.2Target group
This operating instructions manual is directed to trained,
qualified personnel.The contents of this manual should be
made available to these personnel and put into practice by
them.
1.3Symbolism used
Information,tip,note
This symbol indicates helpful additional information.
Caution:If this warning is ignored,faults or
malfunctions can result.
Warning:If this warning is ignored,injury to persons and/or
serious damage to the instrument can result.
Danger:If this warning is ignored,serious injury to persons
and/or destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
lList
The dot set in front indicates a list with no implied sequence.
àAction
This arrow indicates a single action.
1Sequence
Numbers set in front indicate successive steps in a procedure.
4VEGAMET 625 -Double channel Hart signal conditioning instrument
About this document
28970-EN-060426

2For your safety
2.1Authorised personnel
All operations described in this operating instructions manual
must be carried out only by trained specialist personnel
authorised by the operator.For safety and warranty reasons,
any internal work on the instruments must be carried out only
by personnel authorised by the manufacturer.
2.2Appropriate use
VEGAMET 625 is a universal signal conditioning instrument
and power supply unit for connection of two HART sensors.
2.3Warning about misuse
Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards,e.g.vessel overfill or damage to
system components through incorrect mounting or adjustment.
2.4General safety instructions
The VEGAMET 625 is a high-tech instrument requiring the
strict observance of standard regulations and guidelines.The
user must take note of the safety instructions in this operating
instructions manual,the country-specific installation standards
(e.g.the VDE regulations in Germany)as well as all prevailing
safety regulations and accident prevention rules.
2.5CE conformity
VEGAMET 625 is in CE conformity with EMC (89/336/EWG)
and LVD (73/23/EWG).
Conformity has been judged acc.to the following standards:
lEMC:
-Emission EN 61326:1997 (class A)
-Susceptibility EN 61326:1997/A1:1998
lLVD:EN 61010-1:2001
VEGAMET 625 is designed for use in an industrial environ-
ment.Nevertheless,electromagnetic interference from elec-
trical conductors and radiated emissions must be taken into
account,as is usual with a class Ainstrument acc.to
VEGAMET 625 -Double channel Hart signal conditioning instrument 5
For your safety
28970-EN-060426

EN 61326.IfVEGAMET 625 is used in a different environment,
the electromagnetic compatibility to other instruments must be
ensured by suitable measures.
2.6Safety information for Ex areas
Please note the Ex-specific safety information for installation
and operation in Ex areas.These safety instructions are part of
the operating instructions manual and come with the Ex-
approved instruments.
2.7Environmental instructions
Protection of the environment is one of our most important
duties.That is why we have introduced an environment
management system with the goal of continuously improving
company environmental protection.The environment man-
agement system is certified acc.to DIN EN ISO 14001.
Please help us fulfil this obligation by observing the environ-
mental instructions in this manual:
lChapter "Storage and transport"
lChapter "Disposal"
6VEGAMET 625 -Double channel Hart signal conditioning instrument
For your safety
28970-EN-060426

3Product description
3.1Configuration
The scope of delivery encompasses:
lSignal conditioning instrument VEGAMET 625
lSocket
lCoded pins and bridges
lRS232 modem connection cable (optional)
ldocumentation
-this operating instructions manual
-operating instructions manual "RS232/Ethernet con-
nection"(optional)
-Additional instruction manual "Modbus-TCP,VEGA
ASCII protocol"(optional)
-Ex-specific"Safety instructions"(with Ex versions)
-if necessary,further certificates
VEGAMET 625 consists of the following components:
lVEGAMET 625 signal conditioning instrument with indi-
cating and adjustment unit in the front
lCommunication interface for VEGACONNECT
lRS232 or Ethernet interface (optional)
lSocket
VEGAMET
12 34
910 1112
17 18 20 21 22
56 78
13 14 15 16
23 24 25 26 27 28
Ser. No.
12345678
on
OK ESC
COM
3
2
1
2
3
4
1
6
5
Fig.1:VEGAMET 625
1Ex separating chamber with Ex version
2VEGAMET 625
3Indicating and adjustment unit
4Communication interface for VEGACONNECT (I²C)
5RS232 or Ethernet interface (optional)
6Socket
Scope of delivery
Components
VEGAMET 625 -Double channel Hart signal conditioning instrument 7
Product description
28970-EN-060426

3.2Principle of operation
VEGAMET 625 is a universal signal conditioning instrument for
a number of applications such as level,gauge,interface and
process pressure measurement.At the same time,it can serve
as power supply unit for connected sensors.VEGAMET 625 is
designed for connection of two independent VEGA HART
sensors.Hence two independent measurements can be
carried out.By means of a third measurement loop,the
difference between the two input values can be calculated.
With instruments with an optional interface (RS232/Ethernet)
the measured values can be retrieved via modem or network
and displayed by means of a web browser or Visual VEGA.Itis
also possible to send measured values and messages via e-
mail.
The VEGAMET 625 signal conditioning instrument can power
connected sensors and process their measured signals.The
requested parameter is displayed and outputted in addition to
the integrated current outputs for further processing.Hence
the measured signal can be transferred to a remote indication
or a superordinate control system.Three level relays for
control of pumps or other actors are also integrated.
Wide-range power supply unit with 20 …253 VAC/DC for
world-wide use.
You can find detailed information on the power supply in the
"Technical data"in the "Supplement".
3.3Adjustment
VEGAMET 625 can be adjusted with the following adjustment
media:
lthe integrated indicating and adjustment unit
lan adjustment software acc.to FDT/DTM standard,e.g.
PACTware™and a Windows PC
The entered parameters are generally saved in VEGAMET
625,when operated with PACTware™optionally also on the
PC.
Information:
When using PACTware™and corresponding VEGA DTM,
additional settings can be carried out which are not or only
partly possible with the integrated indicating and adjustment
Area of application
Physical principle
Supply
8VEGAMET 625 -Double channel Hart signal conditioning instrument
Product description
28970-EN-060426

unit.When using an adjustment software,you either need one
of the integrated interfaces (RS232/Ethernet)or the interface
converted VEGACONNECT.
Further instructions for setting up the web server and e-mail
functions are stated in the online help of PACTware™or the
VEGAMET 625 DTM as well as the operating instructions
manual "RS232/Ethernet connection".
3.4Storage and transport
Your instrument was protected by packaging during transport.
Its capacity to handle normal loads during transport is assured
by a test acc.to DIN EN 24180.
The packaging of standard instruments consists of environ-
ment-friendly,recyclable cardboard.For special versions,PE
foam or PE foil is also used.Dispose of the packaging material
via specialised recycling companies.
lStorage and transport temperature see "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Packaging
Storage and transport tem-
perature
VEGAMET 625 -Double channel Hart signal conditioning instrument 9
Product description
28970-EN-060426

4Mounting
4.1General instructions
Each series 600 instrument consists of the actual signal
conditioning instrument as well as a plug-in socket for carrier
rail mounting.Because it has protection class IP 30 or IP 20,
the instrument is intended to be used in switching cabinets.
4.2Mounting information
The plug-in socket is constructed for carrier rail mounting acc.
to EN 50022.Power supply is connected to terminals 17 and
18.For neighbouring series 600 signal conditioning instru-
ments,it is possible to continue connection L1and Ndirectly
via the supplied bridges.
Danger:
The bridges must never be used with single instruments or at
the end of a row of instruments.If this rule is not heeded,there
is a danger of coming into contact with the operating voltage or
causing a short circuit.
A VEGAMET 625 in Ex version is an auxiliary,intrinsically safe
instrument and must not be installed in hazardous areas.
Before setup,the Ex separating chamber must be attached (as
shown below)with Ex versions.Safe operation can be ensured
only if the operating instructions manual and the EU type
approval certificate are observed.VEGAMET 625 must not be
opened.
All signal conditioning instruments are provided with different
gaps dependent on type and version (mechanical coding).
The plug-in socket is provided with coded pins that can be
inserted to prevent accidental interchanging of the various
instrument types.
With a VEGAMET 625 in Ex version,the supplied coded pins
(type coded pin and Ex coded pin)must be inserted by the
user acc.to the below chart.
Installation location
Mounting
Instrument coding
10 VEGAMET 625 -Double channel Hart signal conditioning instrument
Mounting
28970-EN-060426

A o
B o
C o
1 o
2 o
3 o
o
o
o
7 o
8 o
9 o
o
o
12 o
N
L1
VEGA A o
B o
C o
1 o
2 o
3 o
4 o
5 o
6 o
7 o
8 o
9 o
10 o
11 o
12 o
N
L1
VEGA
1234 5678
1
4 4
2
3
Fig.2:Socket VEGAMET 625
1Ex separating chamber
2Ex coding with Ex version
3Type coding for VEGAMET 624/625
4Bridges for looping the power supply
VEGAMET 625 -Double channel Hart signal conditioning instrument 11
Mounting
28970-EN-060426

5Connecting to power supply
5.1Preparing the connection
Always observe the following safety instructions:
lConnect only in the complete absence of line voltage
lIf overvoltage surges are expected,overvoltage arresters
should be installed
Tip:
We recommend VEGA overvoltage arresters B61-300 (power
supply VEGAMET 625)and B62-36G(sensor supply).
In hazardous areas you should take note of the appropriate
regulations,conformity and type approval certificates of the
sensors and power supply units.
The power supply can be 20 …253 VAC,50/60 Hz.
Power supply of VEGAMET 625 is connected with standard
cable acc.to the national installation standards.
Standard two-wire cable with screening can be used for
connecting the sensors.The screening is absolutely neces-
sary to ensure interference-free operation with HART sensors.
Connect the cable screen on both ends to ground potential.In
the sensor,the screen must be connected directly to the
internal ground terminal.The ground terminal outside on the
sensor housing must be connected to the potential equal-
isation (low impedance).
If potential equalisation currents are expected,the screen
connection on the VEGAMET 625 must be made via a ceramic
capacitor (e.g.1nF,1500 V). The low frequency potential
equalisation currents are thus suppressed,but the protective
effect against high frequency interference signals remains.
Take note of the corresponding installation regulations for Ex
applications.In particular,make sure that no potential equal-
isation currents flow over the cable screen.In case of
grounding on both sides this can be achieved by the use of a
capacitor or a separate potential equalisation.
Note safety instructions
Take note of safety
instructions for Ex
applications
Select power supply
Select connection cable
Cable screening and ground-
ing
Select connection
cable for Ex applica-
tions
12 VEGAMET 625 -Double channel Hart signal conditioning instrument
Connecting to power supply
28970-EN-060426

5.2Connection steps
Tip:
Before the actual setup,each HART sensors must be
assigned an address (see chapter "Setup"). When assigning
an address,only one sensor should be connected to
VEGAMET 625.Depending on the installation location of the
sensors,it can be advantageous to carry out this addressing
before installing and connecting the sensors.This can be
conveniently carried out e.g.in the workshop.You just need a
24 Volt power supply as well as an indicating and adjustment
module PLICSCOM or the adjustment software PACTware™
with VEGACONNECT.
For electrical connection,proceed as follows:
1Snap socket without VEGAMET 625 onto the carrier rail
2Connect sensor cable to terminal 1/2(active input)or 3/4
(passive input), provide a screening
3When using several sockets,loop the power supply by
means of bridges
4Connect power supply (switched off)to terminal 17 and 18
5If necessary,connect relays or other outputs
6Insert VEGAMET 625 into the plug-in socket and screw it
down tightly
The electrical connection is finished.
Before setting up Ex versions,make sure the Ex separating
chamber is plugged onto the left side of the housing (above the
sensor terminals). The pins for type and Ex coding must also
be inserted correctly.
Information:
lOn the active input (terminals 1/2), VEGAMET 625
provides the power supply for the connected sensors.
Power supply and measured value transmission are
carried out via the same two-wire cable.This operating
mode is intended for sensors without separate power
supply (sensors in two-wire version).
lOn the passive input (terminals 3/4), the sensors are not
powered,only the measured value is transmitted.This
input is for connection of transmitters with their own,
VEGAMET 625 -Double channel Hart signal conditioning instrument 13
Connecting to power supply
28970-EN-060426

separate power supply (sensors in four-wire version). The
connection and operation in Ex ia is not permitted on the
passive input.
Note:
VEGAMET 625 is designed for connection of two HART
sensors.Because they are accessed via different addresses in
the HART multidrop mode,both sensors are connected to the
same sensor input.These are either terminals 1/2(active
input)or terminals 3/4(passive input). Simultaneous mixed
operation on active and passive input is not possible.The
measured value transmission is carried out via the digital
HART signal.An analogue 4…20 mAtransmission is not
possible.Because this is a digital bus system,only one two-
wire cable should lead to the two sensors.Adistributor can be
connected directly in front of the sensors.As an alternative,the
connection to the next sensor can be continued via the second
cable entry in the sensor housing.
14 VEGAMET 625 -Double channel Hart signal conditioning instrument
Connecting to power supply
28970-EN-060426

5.3Wiring plans
17 18 19 20 21 22
910 1112
1
234
23 24 25 26 27 28
13 14 15 16
56 78
L1 N
+
-
+- +- +-
+-
17 2 3
4 5 6
+-
1211
13
8
9
10
Fig.3:Wiring plan VEGAMET 625 with two-wire sensors
1Internal operating relay 1
2Internal operating relay 2
3Internal operating relay 3
4Internal current output 1
5Internal current output 2
6Internal current output 3
7Power supply of VEGAMET 625
8Measured data input with sensor supply (active input)
9Measured data input (passive input), not in Exia
10 Internal fail safe relay
11 HART two-wire sensor with Multidrop address 1
12 HART two-wire sensor with Multidrop address 2
13 Distributor
Wiring plan for two-wire sen-
sors
VEGAMET 625 -Double channel Hart signal conditioning instrument 15
Connecting to power supply
28970-EN-060426

17 18 19 20 21 22
910 1112
1
234
23 24 25 26 27 28
13 14 15 16
56 78
L1 N
+
-
+- +- +-
+-
17 2 3
8
9
4 5 6
+-
1211
14
13
10
Fig.4:Wiring plan,VEGAMET 625 with four-wire sensors
1Internal operating relay 1
2Internal operating relay 2
3Internal operating relay 3
4Internal current output 1
5Internal current output 2
6Internal current output 3
7Power supply of VEGAMET 625
8Measured data input with sensor supply (active input)
9Measured data input (passive input), not in Exia
10 Internal fail safe relay
11 HART four-wire sensor with Multidrop address 1
12 HART four-wire sensor with Multidrop address 2
13 Distributor
14 Power supply for four-wire sensors
Wiring plan for four-wire sen-
sors
16 VEGAMET 625 -Double channel Hart signal conditioning instrument
Connecting to power supply
28970-EN-060426

6Setup with the integrated indicating and
adjustment unit
6.1Adjustment system
The integrated indicating and adjustment unit is used for
measured value display,adjustment and diagnosis of VEGA-
MET 625 as well as the connected sensors.The indication and
adjustment is carried out via the clear,graphic-capable display
with background lighting as well as four keys.The adjustment
menu with selectable language is clearly structured and
enables easy setup.
Certain adjustment options are not possible or are partially
restricted with the integrated indicating and adjustment unit,e.
g.the settings for the e-mail server.For such applications,the
use of PACTware™with appropriate DTMs is recommended.
VEGAMET Ser. No.
12345678
on
OK ESC
COM
3
2
1
3
6
5
7
4
1
2
Fig.5:Indicating and adjustment elements
1LC display
2Adjustment keys
3Communication interface for VEGACONNECT
4Operation control lamp
5Status indication fail safe relay
6Status indication interface activity
7Status indication operating relay 1-3
l[OK]key:
-move to the menu overview
-confirm selected menu
-edit parameter
-save value
l[->]key to select:
Function
Indicating and adjustment el-
ements
Key functions
VEGAMET 625 -Double channel Hart signal conditioning instrument 17
Setup with the integrated indicating and adjustment unit
28970-EN-060426

-menu change
-list entry
-editing position
l[+]key:
-modify value of a parameter
l[ESC]key:
-interrupt input
-jump to the next higher menu
Note:
Approx.10 minutes after the last pressing of a key,an
automatic reset to measured value indication is triggered.Any
values not confirmed with [OK]will not be saved.
6.2Setup procedure
Setup encompasses mainly the selection of the application
and the adjustment of the measurement loop.Scaling the
measured value to the requested size and unit (possibly also
applying a linearization curve), as well as the adaptation of the
relay switching points,are additional settings.Further setup
steps might be,if necessary,the modification of the current
output characteristics or the setting of an integration time to
smooth the measured value.
For instruments with Ethernet interface,the instrument must be
provided with the host name and IP addr./Subnet mask.If
necessary,the e-mail/web server can also be configured with
PACTware™.
VEGAMET 625 can process measured values of several
connected HART sensors.All measured values are trans-
mitted as digital HART signals on the same cable (bus). An
analogue 4…20 mAtransmission is not possible.An own,
unique address (address range 1-15)must be assigned first of
all to each connected sensor.This mode is also called HART
multidrop mode.Addressing can be done directly on each
HART sensor via the respective adjustment unit or an
appropriate adjustment software.As an alternative,the setting
of the sensor address can be also carried out via the
VEGAMET menu under "Service -Sensor address".
Setup
Set HART address
18 VEGAMET 625 -Double channel Hart signal conditioning instrument
Setup with the integrated indicating and adjustment unit
28970-EN-060426

Note:
When addresses are being assigned,only one sensor with a
particular address must be connected on the bus.If this is not
the case,the sensor cannot be accessed and it is not possible
to assign an address.
After being switched on,VEGAMET 625 first of all carries out a
short self-check.The following steps are carried out:
lInternal check of the electronics
lindication of the instrument type,firmware version as well
as the instrument TAG (instrument name)
lthe output signals jump briefly to the set fault current
Then the current measured values will be displayed and
outputted.
As requested,the measured value display shows the
individual measurement loops separately or in a joint overview.
The respective digital display value,the measurement loop
designation (meas.loop TAG)and the unit are shown.With the
separate presentation,an analogue bar graph is also
displayed and the measured values appear in bigger font size.
By pushing the [>]key,you move between the different
indicating options.
32.6
%
TAG-No.1
■
By pushing [OK]you move from the measured value indication
to the main menu.
▶ Device settings
Meas.loops
Display
Diagnostics
Service
Info
With the initial setup,you should select all submenu items of
"Device settings"and enter the correct settings.
àSelect the menu item "Device settings"with [->]and
confirm with [OK].
Switch-on phase
Measured value indication/
Main menu
VEGAMET 625 -Double channel Hart signal conditioning instrument 19
Setup with the integrated indicating and adjustment unit
28970-EN-060426

Under the menu item "Device settings",you can select the
requested application.For all level,gauge and differential
measurements,the application "Standard"is correct.
If an interface measurement should be carried out with a
VEGAFLEX 67,you have to choose the menu item "Interface
measurement"as application.After the configuration of the
inputs,the exact DK value for the upper medium must be
entered.For further information see chapter "Application
examples".
Application
▶ Standard
Interface
àSelect the requested application with [->]and save your
settings with [OK].Then move with [->]to the menu item
"Input".
Because VEGAMET 625 has two inputs,the measurement
loops must be assigned to the inputs.After the addresses of
the HART sensors are assigned,a list of the existing sensors
can be prepared and displayed via "Sensor selection -Sensor
search".Now you can assign the requested sensor to each
measurement loop.
Input 1
undefined
Change input?
Furthermore VEGAMET 625 must be informed which "Sensor
value"should be used for further processing.Depending on
the sensor type,this can be distance,pressure,interface or
temperature.When HART sensors from other manufacturers
are connected,the options PV (Primary Value)and SV
(Secondary Value)are available.The parameter to be entered
is stated in the operating instructions manual of the respective
sensor manufacturer.
àAllocate the requested inputs to the appropriate measure-
ment loops,select the suitable sensor value and save your
settings with [OK].After the first setup,you can modify the
inputs also under "Meas.loop -Input ".
Device settings -Application
Device settings -Input
20 VEGAMET 625 -Double channel Hart signal conditioning instrument
Setup with the integrated indicating and adjustment unit
28970-EN-060426