Addendum to Operating and Instruction Manual for “Modis” Converters
Ex Versions
1. Description
These versions of the converter are suitable for installation in a hazardous area where
intrinsically safe outputs are required.
This converter has passive outputs, which also has the benefit of utilizing the multi-drop
feature of HART®. The outputs are galvanically separated from each other.
Please ensure that you know which converter options you have, to use the correct wiring
diagram.
2. Output Options
The following output options are available:
G. 1 x 4 -20mA and 1 x Pulse output
H. 1 x 4 -20mA and 1 x Status output
K. 1 x 4 -20mA and 1 x Control input
L. 2 x 4-20 mA
M. 1 x 4-20mA and PROFIBUS PA
N. 1 x 4-20mA and Foundation Fieldbus (pending)
Note: HART® is available on the first current output in all cases except options M and N.
Wiring the Converter:
Note:
Supply compartment is
separated from output
terminals
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
I
1
⊥
+
I1I2I
⊥
11 12
2
+
I
I
1
⊥
DD11 12
1
⊥
+
+
4 - 20 mA24 V AC/DC
P- P+
or
S- S+
or
C- C+
Depending on function
programmed
or
100-230 VAC
4 - 20 mA
#1
4 - 20 mA
#2
24 V AC/DC
or 100-230 VAC
4 - 20 mA
Fieldbus Foundation
Profibus PA
or
24 V AC/DC
or
100-230 VAC
Non-Ex Versions
5. Description:
This version of converter is similar to the existing Modis converter range but has no Ex
approvals.
It has been introduced to provide the options of Profibus PA, Foundation Fieldbus (planned)
and galvanically isolated outputs for non-Ex environments such as food and pharmaceutical
applications.
6. Available Versions:
L2 x 4-20mA passive output (freely programmable). HART protocol on first output. Both
outputs galvanically separated from each other and the power supply.
M1 x 4-20mA passive output (freely programmable) and 1 x Profibus PA passive output
(HART protocol not available). Both outputs galvanically separated from each other
and the power supply.
N Like M, but 1x Fieldbus Foundation passive output (pending)
Supply Voltage:
These converters are available with the same two voltage options:
24V AC/DC
100 – 230 V AC
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
8. Supplementary Instructions for PROFIBUS PA
Ex Versions......................................................................................................................................................... 2
Ex Approval Versions ......................................................................................................................................... 3
Wiring the Converter:
Non-Ex Modis Converters................................................................................................................................... 5
1. General
Items included with supply.................................................................................................................................. 8
2.3 Meaning of the Measuring- and Status Messages...................................................................................... 12
3. Connection of Instruments on the PROFIBUS-PA system
3.1 Interconnection of devices in hazardous locations ..................................................................................... 14
3.2 Bus cable.................................................................................................................................................... 14
3.3 Shielding and grounding............................................................................................................................. 14
Addendum to Operating and Instruction Manual for “Modis” Converters
1. General
These Instructions are supplementary to the “Installation and Operating Instructions MFM
4085 K / F or MFM2081/3081 K/F“. The details given there, in particular the Safety
Information, are valid and should be observed. These Supplementary Instructions provide
only additional information for device Operation and connection to a PROFIBUS-PA Fieldbus.
Items included with supply
In addition to the standard scope of supply, these Supplementary Instructions for the MFM
4085 K / F i and MFM 2081/3081 K / F i with PROFIBUS-PA interface, plus a diskette with all
available GSD files for KROHNE devices.
Software history
,VVXHGSignal converterInstructions
month/
HardwareFirmwareDeviceUser
year
05/99352),%863$
4.10/PRE990528
Module
06/99PROFIBUS-
4.15/PRE990618
PA Module
11/99PROFIBUS-
4.12/991126
PA Module
2. Technical Specifications
Control system (PLC)
Class 1 master
Analog I/O module
program
Engineering or operation
control tool
Class 2 master
PROFIBUS-DP, up to 12 Mbit/s
Power
Supply
Segment
coupler/link
Segment
coupler/link
PROFIBUS-PA
,30)/&
1 2 3 4 5 6
kg/h
1000
kg
2
03687
900
800
H250
,30)/&
700
SN 586 677/01-03
MC H250/RR/M9/K2/ESK-Z
600
C K25.2 1.4571
F CIV 25 1.4571
500
MD 1997
400
C2H50H
D 0.93 kg/l
V 2.5 mPa.s
300
T 23.5 C
P 0.4 MPa
200
100
FIA 1025
RP
PROFIBUS-PA
,30)/&
1 2 3 4 5 6
4-20 mA
HART device
The above diagram shows a typical instrumentation with PROFIBUS-PA devices in hazardous
and non-hazardous locations, including connection of conventional devices (e.g. with 4-20mA
signals) to the PROFIBUS-PA.
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
The PROFIBUS-PA is normally connected to a segment coupler, which, among other things,
carries out conversion to the PROFIBUS-DP. Here, it needs to be noted in particular that the
segment coupler is normally set to a fixed baud rate on the DP side.
Further information on the planning and Operation of PROFIBUS-PA networks is to be found
in the KROHNE brochure “PROFIBUS-PA networks”.
2.1 GSD File
All available GSD files of KROHNE devices – including those of the MFC 081 i or 085 i, of
course - are supplied together with each device. The GSD contains information that is needed
for project planning of the PROFIBUS-DP/PA communication network. The relevant data files
must be loaded into the project planning system/master system before start-up of the bus
system.
For example, the following applies to COMET 200 or COM PROFIBUS from Siemens:
• all GSD files (*.GSD) into the directory of the GSD files, e.g. *\GSD
• all BMP files (*.BMP) into the directory of the bit maps, e.g. *\BITMAPS
In STEP7, the GSD file is automatically copied into the respective directory with “install new
GSD” (in the HW-Config Menu: EXTRAS). After that, the bit map must be copied into the
directory *\SIEMENS\STEP7\S7data\Nsbmp. Following “catalogue updating” the device can
be placed in the project. This will then enable the cyclic communication (measured values and
status).
The MFC 081/085 i are supporting the entire PROFIBUS-PA profile V 3.0. All devices have
two ident-no. and two GSD files. Ident-no. “F701” belongs to the GSD file KROHF701.GSD
and includes the complete functionality of the mass flow meter. The use of the manufacturer
independent Ident-no. “9742” (GSD file “PA_9742.GSD”) allows the user an interchange with
other mass flow devices from other manufacturers.
PA_9742.GSD
The limited functionality of the GSD file includes four function blocks:
Mass flow rate, density, temperature and mass flow totalizer.
You need the PA_9742 to use this functionality. Before this, the communication has to be
projected and it has to be switched from “full functionality” to “interchangeable basic
configuration” by using a Master Class 2 Tool (IDENT_NUMBER_SELECTOR: Slot 0, Index
40 change byte value from 1 to 0). After this has been done, the device has to be projected by
using PA _9742.
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
KROHF701.GSD
KROHNE delivers the GSD with the entire device functionality, which is listed below:
Block NumberStandard-ConfigurationKROHF701.GSD
Ident-No. F701
1Mass FlowAI-FBØxØ115
2DensityAI-FBØxØ119
3TemperatureAI-FBØxØ11D
4Mass TotalizerTotalizer-FBØxØ115
5Volume FlowAI-FBØxØ111
6Percentage Mass or ° BrixAI-FBØxØ139
7Solid FlowAI-FBØxØ141
8Volume TotalizerTotalizer-FBØxØ111
AI = Analog Input Function Block
FB = Function Block
Address of the
“channel
parameter”
Important Notes:
1. To project the PROFIBUS communication network, you have to allocate each of the
blocks to a function. On the PC-S7 from Siemens, this will be done with the Tool HWConfig. It offers the functions which are described as follows:
2. It is possible to program an “empty block” on each block number. This means, that for this
block no data are transmitted in the cyclic data telegram.
3. There is NO Al block allowed on block position 4 and 8! Only totalizer block is here
allowed! That means the function “Analog Input (AI) is not possible. Beside the totalizer
functions is only the “empty block” allowed.
4. There is a choice between 4 different totalizer functions, which can be allocated to the
blocks 4 and/or 8. The meaning of the cyclic data transfer (Totalizerand Status) does
always correspond the meaning in section Meaning of the Measuring- and Status
Messages. The four functions are defined as follows:
Function “Totalizer”cyclic transfer of the totalizerwith status to the master
Function “TOT_SetTot”cyclic transfer of the totalizerwith status to the master +
cyclic control datafrom master to the device via the Bytes
SetTot
Function “TOT_Mode_Tot”cyclic transfer of the totalizerwith status to the master +
cyclic control datafrom master to the device via the Bytes
ModeTot
Function “TOT_SetTot_ModeTot”cyclic transfer of the totalizerwith status to the master +
cyclic control datafrom master to the device via the Bytes
SetTot and after that ModeTot
Both, the Byte SetTot and ModeTot are beeing sent cyclicly from Master to the device, by
inserting these bytes as output datas to the PLC configurator. The meaning of the control
bytes are as follows:
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
SetTot
SetTot =0:Totalizer is totalizing. If the value of SetTot changes from “1” or “2” to “0”
the totalizer starts from the actual (0 or Preset value).
SetTot =1:Totalizer will be reset to 0 and stays there until SetTot is switched to 0.
SetTot =2:Totalizer is set to the value of PresetTot. PresetTot can be written via a
acyclic master (totalizer in block 4 = Slot 4 Index 32; totalizer in block 8
Index 32).
SetTot > 2:Is not allowed
ModeTot
ModeTot = 0 totalizer totalizes positive and negative values.
ModeTot = 1 totalizes only positive values.
ModeTot = 2 totalizes only negative values.
ModeTot = 3 totalizer is stopped, no totalization happens.
ModeTot >3 is not allowed
5. The standard block configuration can be changed, e.g. that density will be transferred in
block 1 instead of block 2. To do this, customer has to use a user tool, which can change
the “channel parameter” under the relative index 14, for totalizer function blocks under
index 12. In the above listed table, we have listed in the column “ Address of the “channel
parameter” the value, which you have to program in the channel parameter of the function
blocks.
6. Does the device include the options “volume concentration” or “° Baumé”, ° Brix and
NaOH, these values can be programmed via the channel parameters on a Al function
block. The value of the corresponding function block (relative Index 14) has to be
programmed 0x0135 for volume concentration or 0x013D for ° Baumé.
2.2 PROFIBUS-PA Profile
The MFC 081/085 i supports the PROFIBUS-PA Profile Version 3.0. Additionally, all relevant
parameters in the device are offered via the PROFIBUS-PA interface. The MFC 081/ 085
i
defines the following blocks:
• Sixblocks Analog Input (AI): mass flow, density, temperature, volume flow, percentage
mass and solid flow. Optional volume concentration and ° Baumé can be provided.
• Two totalizer function blocks (TOT): totalized mass and totalized volume. As an option, the
solids can be totalized.
• One transducer block for Coriolis mass flow devices.
This block provides the parameters and functions defined in Profile 3.0, as well attached
are the values, which are not defined by the profile.
• One physical block.
This block contains the parameters defined in Profile 3.0.
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
2.3 Meaning of the Measuring- and Status Messages
By implementing devices in the PROFIBUS-Master by using the GSD, it is possible to
indicate, which measuring and totalizer messages will be transferred over the PROFIBUS. To
each values a status will be added. First, the 4 value byte (Float Format to IEEE Standard 754
Short Real Number) and then 1 status Byte will be transferred. That means that each
measuring or totalizing value is described with 5 byte and transmitted one after the other
according to the sequence which was projected over the GSD. If 4 function blocks have been
projected, 20 byte will be transmitted.
First an example of the float format:
Addendum to Operating and Instruction Manual for “Modis” Converters
3. Connection of Instruments on the PROFIBUS-PA system
3.1 Interconnection of devices in hazardous locations
We recommend that a PROFIBUS-PA network in the hazardous location be projected in
accordance with PTB’s FISCO model (see KROHNE brochure “PROFIBUS-PA networks”). In
that case, all connected electrical components (including the bus termination) must be
approved in conformity with the FISCO model.
3.2 Bus cable
The statements given in the FISCO model apply only provided the bus cable used meets the
following specifications: R´=15...150 Ohm/km; L´=0.4...1 mH/km; C´=80...200 nF/km.
3.3 Shielding and grounding
For optimum electromagnetic compatibility of systems it is extremely important that the
system components, and particularly the bus cables connecting the components, be shielded
and that such shields - if possible - form an unbroken cover, electrically speaking.
Hence it follows that, for use in non-hazardous duty systems , the cable shield should be
grounded as often as possible.
In “Ex“ systems with adequate equipotential bonding in the hazardous and non-hazardous
location along the entire Fieldbus installation, multiple grounding of the shield is also of
advantage.
Note: The use of twisted and shielded cables is strongly recommended, otherwise EMC
protection of the mass flow meter cannot be assured.
3.4 PROFIBUS-PA connection
Connect the bus cable as shown in
the figure.
• Connect the cable cores to
terminals D and D• .
• Polarity reversal will not have
any effect.
• The cable shield should be
connected with minimum length
to the FE functional ground.
• The equipotential bonding
conductor must be connected to
the device by connecting it to FE
functional ground
PROFIBUS-PA with current output:
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
Non-Ex-VersionEx-Version
Fieldbus
DI
DI
Shield
PROFIBUS-
PA
Current
Output
-+
4-20mA
U=8-30V
Power
Supply
4-20mA
U=8-30V
Current
Output
1
+-
PROFIBUS-
Fieldbus
1
PA
DDII
Power
Supply
Shield
4. Menu Settings for PROFIBUS-PA
The following settings need to be made for Operation of the MFC 081/ 85 i on a PROFIBUSPA network. Note, that the address can be set over the communication service “Set slave
address” from the master.
Function (Fct.)Description
3.8.4
LOCATION
3.11.0Text, measuring-point tag (max. 10 characters)
3.11.1
PROTOCOL
3.11.2
ADDRESS
3.11.3
BAUD RATE
Tag name setting
Characters assignable to each place:
A-Z 0-9 or "_" (blank character)
Characters assignable to each place:
A-Z 0-9 or "_" (blank character)
•
PROFI PA
Set address
Range: 00-126 for PROFIBUS-PA (default 126)
BLOCKED
(measuring point no.) max. 10 characters
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
Ex
Supply voltage24 V AC/DC (Switch mode power supply)
U
= 24 V DC +30% / -25%, 5W
N
= 24 V AC +10% / -15%, 5W
U
N
100 V AC...230 V AC + 10% / 15%, 10 V A
24 V AC/DC (Switch mode power supply)
U
= 24 V DC +30% / -25%, 5W
N
= 24 V AC +10% / -15%, 5W
U
N
100 V AC...230 V AC + 10% / 15%, 10 V A
Non-Ex
Fuse ratingIN <= 1.25 AIN <= 1.25 A
Outputs / inputsModule dependantModule dependant
Current output (IS)
FunctionAll operating data programmable galvanically
isolated from supply, CPU and other outputs.
i
Passive (Current sink, EX
)
All operating data programmable
galvanically isolated from supply, CPU and
other outputs. Passive.
Current4 – 20 mA4 – 20 mA
Linearity0.05% (reference 20 mA at 25°C)0.05% (reference 20 mA at 25°C)
Temperature drift<= 100 ppm/°K (Typical 30ppm/°K)<= 100 ppm/°K (Typical 30ppm/°K)
Load US – 8V
<= 22 mA (US = external supply voltage)
U
– 8V
S
<= 22 mA (US = external supply voltage)
Supply8 – 30 V8 – 30 V
Connect ONLY to certified IS circuits with the
maximum values:
Ui = 30V, Ii = 250mA, Pi = 1W
Pulse output (IS)Not available
FunctionAll operating data programmable galvanically
isolated from supply, CPU and other outputs.
OperationPassive, loop-powered
External supply
6 – 30V DC
voltage
CurrentMaximum 110 mA / 6 – 30 V DC
I high <= 900 µA (30 V)
I high <= 200 µA (8 V)
Saturation
≤
2V @ I = 110mA
voltage
Frequency
≤
1300Hz
Connect ONLY to certified IS circuits with the
maximum values:
Ui = 30V, Ii = 250mA, Pi = 1W
Status outputNot available
FunctionAll operating data programmable galvanically
isolated from supply, CPU and other outputs.
OperationPassive, loop-powered
External supply
6 – 30V DC
voltage
Current
≤
110 mA
I high <= 900 µA (30 V)
I high <= 200 µA (8 V)
Connect ONLY to certified IS circuits with the
maximum values:
Ui = 30V, Ii = 250mA, Pi = 1W
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK
Addendum to Operating and Instruction Manual for “Modis” Converters
Ex
Control input (IS)Not available
FunctionAll operating data programmable galvanically
isolated from supply, CPU and other outputs.
OperationPassive, loop-powered
External supply
voltage
Current
Control signals7-30V DC for HIGH
PROFIBUS PA
HardwareSee table aboveSee table above
SoftwareSee table aboveSee table above
Fieldbus
Foundation (IS)
HardwareDesigned to ISA and IEC 1158-2 physical
Ambient
Temperature
7 – 30V DC
≤
4.5 mA
0-2V or open terminals for LOW
Connect ONLY to certified IS circuits with the
maximum values:
Ui = 30V, Ii = 250mA, Pi = 1W
PendingPending
Designed to ISA and IEC 1158-2 physical
layer. Standards applicable to type 121
device profile.
Connection: polarity independent
Connect ONLY to certified IS circuits
according to the FISCO model with the
maximum values:
Ui = 30V, Ii = 250mA, Pi = 1W
-20 to 65°C-20 to 65°C
layer. Standards applicable to type 121
device profile.
Connection: polarity independent
Bus data: 9V – 32V; 11mA typical
Non-Ex
KROHNE Ltd • Rutherford Drive • Park Farm Industrial Estate • Wellingborough • Northamptonshire • NN8 6AE • UK