KROHNE IFC-090i User Manual

IFC090 FF 01/2006 7.10025.21.00

Supplementary

Installation and

Operating Instructions

IFC 090, IFC 090 i

With FOUNDATION

FIELDBUS Communication

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IFC090 FF 01/2006

Contents:

1 Introduction 4

2 Installation and Operation 4

2.1 Technical Data IFC090 FF 4

2.2 Electrical Connection of Foundation Fieldbus Devices 4

2.3 Installation in the Hazardous Area, Bus Cable 5

2.4 Shielding and Grounding 6

2.5 IFC090 Menu Settings for Foundation Fieldbus 6

2.6 Foundation Fieldbus Functional Blocks 6

3 Foundation Fieldbus Principles 7

3.1 Resource Block 7

3.2 Transducer Block 8

3.3 Function Blocks 8

4 IFC090-FF Block Description 9

4.1 Resource Block 10

4.2 Transducer Block 14

4.3 Analog Input Block (Flow) 16

4.4 Integrator Blocks 1 and 2 (Flow(+)- and Flow(-)-Totalizer) 22

5 IFC090-FF Configuration 28

5.1 Resource Block Configuration 28

5.1.1 Resource Block Mode Handling 28

5.1.2 Write Protection 28

5.1.3 Resource State Re-Initialization 29

5.2 Transducer Block Configuration 29

5.2.1 Transducer Block Mode Handling 30

5.2.2 IFC090-FF Zero Point Calibration 30

5.3 Analog Input Block Configuration 30

5.3.1 Process Value Selection 31

5.3.2 Linearization and Scaling 31

5.3.3 Filtering 32

5.3.4 Input/Output Options 32

5.3.5 Output Status Options 32

5.3.6 Process Alarms 33

5.4 Integrator Blocks Configuration 34

5.4.1 Integrator Block Mode Handling 34

5.4.2 Integration Input – Rate or Accumulated Pulses 34

5.4.3 Adaptation of Integrator Inputs 34

5.4.4 Setting the Flow Direction 36

5.4.5 Type of Integration 36

5.4.6 Integrator Reset Strategies 37

5.4.7 Trip and Pre-trip Handling 39

5.4.8 Status Handling 39

5.4.9 Input Value Handling 39

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6 Troubleshooting 42

6.1 BLOCK_ERROR 42

6.1.1 Resource Block 42

6.1.2 Transducer Block 42

6.1.3 Analog Input Block 43

6.1.4 Integrator Blocks 44

6.2 Transducer Block XD_ERROR 44

6.3 Measurement Value Status 44

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Introduction

1 Introduction

These instructions are supplementary to the “Installation and Operating Instructions IFC 090 K / F“. The details

depicted therein, in particular the Safety Information are valid and should be adhered to. The present

Supplementary Instructions provide additional information for the devices when being operated and connected

to a Foundation Fieldbus.

Note: Please set the controller to manual mode before changing parameters of the IFC 090.

The present Supplementary Instruction for the IFC 090 with Foundation Fieldbus- interface, plus a diskette with

the DD and CCF file are included in our scope of supply, in addition to those items delivered for the standard

device.

2 Installation and Operation

2.1 Technical Data IFC090 FF

Hardware

Physical to IEC 61158-2 and the FISCO model

Bus characteristics: 9... 30 V; 0.3 A max.; 4.2 W max.

Base current 10 mA

FDE bus with separate fault detection electronics

Fault current 6 mA; (fault current = max. continuous current – base current)

Starting current lower than the base current

“Ex“ approval EEx ia IIC T6 or EEx ib IIC/IIB T6 in conformity with the FISCO model

Connection independent of polarity

Software

DD, CFF File supplied on diskette, available also in the KROHNE Downlaod Center

Functional blocks flow [m3/s], integrator 1 [m3], integrator 2 [m3]; units are default units

Operator control local display and operator interface at device

2.2 Electrical Connection of Foundation Fieldbus Devices

Connect the bus cable as shown in the figure.

• Connect the cable cores to terminals D and DI.. 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.

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IFC090 FF 01/2006

Foundation Fieldbus with Current Output (passive) Foundation Fieldbus with Binary Output (passive)

Installation and Operation

Non Ex Version

busconnection

4-20mA

current

outputfieldbus

U min = 8V

U max = 30V

Outputs intrinsically safe

4-20mA

current

output

fieldbus

IIDD

U min = 8V

busconnection

powersupply

power supply

Non Ex Version

switching

fieldbus

busconnection

output

Outputs intrinsically safe

switching

output fieldbus

busconnection

powersupply

power supply

U max = 30V

2.3 Installation in the Hazardous Area, Bus Cable

We recommend that a Foundation Fieldbus network in the hazardous area should be projected in accordance

with PTB’s FISCO model. The FISCO-Model is based on the following conditions:

• all electrical components which should be connected to the bus must be approved according to the FISCO

model (even the termination)

• the maximum cable length should not exceed 1000 m,

• the values of the cable are within the following ranges: R´=15...150Ω/km; L´=0,4...1mH/km;

C´=80...200nF/km, other limitations for the cable than the FISCO limitations are not existent. Nevertheless, a

twisted pair and shielded cable is strongly recommended. Example: a good quality cable could have the

following data: 44Ω/km, <90nF/km, <3dB attenuation at 39 kHz and 100 Ohm impedance at 31,25kHz.

• the approved input values of the field devices (Uo, Io, Po) comply to the output values of the power supply

(e.g. segment coupler) according to UI ≤ Uo, II ≤ Io und PI ≤ Po.

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2.4 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, are shielded and that such shields - if possible -

form an unbroken cover.

Installation and Operation

Hence, it follows that, for use in non-hazardous duty systems

possible.

In “Ex“ systems an adequate equipotential bonding in the hazardous and non-hazardous location along the

entire fieldbus installation is strongly recommended. Multiple grounding of the shield is of advantage.

Note: The use of twisted and shielded cables is strongly recommended, otherwise EMC protection of the IFC

090 cannot be assured.

, the cable shield should be grounded as often as

2.5 IFC090 Menu Settings for Foundation Fieldbus

(see also Section 4 in the Installation and Operating Instructions for the IFC090)

The following settings need to be made for operation of the IFC 090 on a Foundation Fieldbus network. Note

that the address can be set by the service “set slave address” as well.

Function (Fct.) Description

3.9 COM Select function for the communication port

♦ OFF ♦ HART ♦ PROFI PA *

• Note: * indicates Foundation Fieldbus Communication when selected

2.6 Foundation Fieldbus Functional Blocks

The IFC090 supports the H1 Foundation Fieldbus Communication Standard FF-003-2.2-1-1, Version 1.4.

Additionally, all relevant parameters in the device are offered via the FF interface. The IFC 090 defines the

following functional blocks:

• Three Function Blocks (FB): One Analog Input-FB for flow and two integrator-FBs for integration.

Reset function is possible.

• One Transducer Block for electromagnetic flow measurement.

• One standard Resource Block.

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3 Foundation Fieldbus Principles

The Foundation Fieldbus is a Local Area Network (LAN) for connecting field devices like sensors and actuators.

One of the main benefits of Foundation Fieldbus is line saving in comparison to the traditional 4 ... 20 mA

technology.

The different device functions are implemented in a block-based scheme within a User Application. In this block

scheme, a distinction is made between the following kinds of blocks (see Figure 1):

• Resource Block,

• Transducer Block(s) and

• Function Block(s).

Foundation Fieldbus Principles

Figure 1: Foundation Fieldbus block scheme

3.1 Resource Block

Each FF device possesses exactly one Resource Block describing the specific features of the fieldbus device.

The Resource Block is not related to any functional process of the device, but contains data that are specific for

the device (e.g. device name, serial number, supported features, etc).

In addition, the Resource Block provides dynamic diagnostic data giving information on the current state of the

hardware.

A basic set of Resource Block parameters is specified by Fieldbus Foundation (see FF-891, 3.1). This set can

be extended by additional manufacturer specific parameters (the IFC090-FF possesses the Foundation

specified parameters only).

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3.2 Transducer Block

Foundation Fieldbus Principles

Transducer Blocks represent the interface between the device specific hardware (i.e. input/output functions) and

the FF specified Function Block model. Since there might be multiple functions in a device (measurement

values, positioning functions, etc), an FF device can have several Transducer Blocks1.

They provide device specific information in terms of sensor/actuator functions (e.g. type of sensor, range of

process value, etc) and they make available the process values to the function blocks or provide the actuator

input values obtained from function blocks to the hardware respectively.

3.3 Function Blocks

The main functional behavior of the FF device is implemented in one or several Function Blocks. Depending on

the device type there are Input Blocks (e.g. flow device → Analog Input Block, Discrete Input, etc), Output

Blocks (e.g. valve → Discrete Input, etc), or Control Blocks (PID, etc). These blocks have input and/or output

parameters to be linked to other devices and to control systems by the Fieldbus.

Note: This does not imply that an FF device has to have several Transducer Blocks if it provides several

functions.

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4 IFC090-FF Block Description

The IFC090-FF consists of the following blocks (see figure 2):

• 1 Resource Block,

• 1 Transducer Block (standard flow),

• 1 Analog Input Block (flow value) and

• 2 Integrator Blocks (1 for positive- and 1 for negative flow integration)

IFC090-FF Block Description

Figure 2: IFC090-FF block scheme

In the following, the different block parameters are described in detail.

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4.1 Resource Block

Table 1 lists the Resource Block parameters in alphabetical order (this list provides a description of the various

parameters only; for a more detailed description of how to configure these parameters: see chapter below.

IFC090-FF Block Description

Parameter Access

ACK_OPTION R/W

ALARM_SUM Mix

Description Allows to enable automatic acknowledge of Resource Block alarms. The following settings are valid for Resource Block:

Unack Alarm 1 (Discrete Alarm) clearing of soft write lock

Unack Alarm 8 (Block Alarm) block mode switches to Out of Service

If set, the respective alarm doesn’t have to be acknowledged when occurring.

see also: ALARM_SUM, WRITE_LOCK, WRITE_ALM Display of process alarms. The current alarm is displayed in the current field and can have the following values:

Discrete Alarm the soft write lock was cleared Block Alarm block mode switches to Out of Service

The additional fields unacknowledged and unreported give respective information about the current alarm state. The field disabled, which is the only writable field of this parameter, can be used to disable these alarms.

see also: RS_STATE

NV_CYCLE_T R

Minimum time interval between two cycles of writing non-volatile parameters OUT, PV and FIELD_VAL. Since these values are not saved, this value is always zero (0) which means don’t save these parameters.

RESTART R/W

Allows a manual restart to be initiated. Several degrees of restart are possible: RUN Setting for normal operation. RESTART RESOURCE Warm start of the IFC090-FF. RESTART WITH DEFAULTS Sets all FF parameters to their default values. To be used with caution! RESTART PROCESSOR Cold start of IFC090 measurement electronics and warm start of FF process.

RS_STATE R

State of the function block application state machine. The following states are possible: ONLINE Normal operation state: All defined links are established. INITIALIZATION Initialization state: All alarms will be confirmed and

ONLINE-LINKING Link evaluation state: Wait until all links are established STANDBY Out of Service state: Entered if mode of Resource Block is

SET_FSTATE R/W

Allows the Fault State conditions for output function blocks to be manually initiated by setting to ‘Set’.

NOTE:

Since the IFC090-FF doesn’t have an output block, this parameter is not supported.

SHED_RCAS R/W

Time duration for the monitoring-cycle in which a function block in mode RCAS has to answer on control system requests.

acknowledged.

OOS.

NOTE:

Since the IFC090-FF has no function block capable of switching to mode RCas, this parameter is not supported.

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Parameter Access

SHED_ROUT R/W

Description Time duration for the monitoring-cycle in which a function block in mode Rout has to answer on control system requests.

NOTE:

Since the IFC090-FF has no function block capable of switching to mode Rout, this parameter is not supported.

STRATEGY R/W

Parameter used to group a set of blocks. This is done by assigning the same STRATEGY numerical value to all blocks belonging to one group.

NOTE:

This parameter is neither checked nor used by the function block application! It can be used by control system to group blocks!

ST_REV R

Static data revision counter. ST_REV will be incremented if a static Resource Block parameter has changed. By checking this parameter, control systems are able to realize if a static parameter has changed its value without checking all static parameters all the time.

TAG_DESC R/W

User description of the intended application of the block. The user is free in setting this value. The only limitation is the length of 32 characters at maximum. It is not checked by the application, but has informational character only.

TEST_RW R/W

Read/write test parameter. It is only used during Fieldbus Foundation interoperability testing and has no meaning for normal operation!

UPDATE_EVT R

Alert generated by a change to static data. The subfields of this parameter give detailed information about the changed static parameter, time of change and state of the update event.

WRITE_ALM R

Alarm generated, if the parameter write lock is cleared.

see also: ACK_OPTION, WRITE_LOCK, WRITE_PRI

WRITE_LOCK R/W

If this parameter is set to ‘Locked’ (2) all writable parameters in all blocks are write protected, with the exception of WRITE_LOCK itself. Dynamic data will continue to be updated. To disable the write protection, set this parameter to ‘Not Locked’ (1).

IFC090-FF Block Description

WRITE_PRI R/W

see also: ACK_OPTION, WRITE_ALM, WRITE_PRI Priority of the alarm generated by clearing the WRITE_LOCK: 0 alarm isn't be evaluated 1 no notification to the control system in case of an write protection alarm 2 reserved for block alarms 3-7 write protection is send as user/operator note to the control system, according to the given priority (3 = low and 7 = high) 8-15 write protection alarm is sent with the appropriate priority (15 = high and 8 = low).

Table 1: Resource Block parameters

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4.2 Transducer Block

Table 2 lists the Transducer Block parameters in alphabetical order (this list gives a description of the various

parameters only; see chapter below. for a detailed description depicting how to configure these parameters):

IFC090-FF Block Description

Parameter Access

ALERT_KEY R/W

BLOCK_ALM R

BLOCK_ERR R

CAL_MIN_SPAN R

CAL_POINT_HI R/W

CAL_POINT_LO R/W

CAL_UNIT R/W

CAL_ZEROPOINT R/W

COLLECTION_DIRECTORY R

CYCLES_ZEROPOINT_CAL R/W

LIN_TYPE R/W

Description

Identification number of the plant unit. It helps to identify the location (plant unit) of an event. The handling of this parameter is up to the control system or control person, respectively. Display of current block state. Field subcode gives information about the state current errors. The following errors can occur:

Configuration Error

Block was put Out of Service

The remaining fields give information about the state and the occurrence of this alarm. Display of active block errors. The following errors are possible:

Out of Service block is in Out of Service mode Device needs Maintenance now fatal error of IFC090-FF hardware Minimum calibrated span value allowed.

Highest calibrated value. This value depends on the IFC090-FF pipe diameter. Lowers calibrated value. This is the absolute value of the lowest positive and negative value, the device is capable of measuring, and it is constant to ‘0’. Engineering units code index for the calibration values. This is always m3/s (cubic meter per second). Start zero point calibration by writing a value different from ‘0’.

NOTE:

Handle this parameter with caution, since a correct zero point calibration is based some important conditions. Directory that specifies the number, starting index, and DD2 item IDs of the transducer block’s data collections. The first entry specifies the number of data collections, and the remaining specifies the data collections. Number of cycles to perform if a zero point calibration is started. Valid values are in between 0 and 2000. Linearization type used to describe the behavior of the sensor output. The IFC090-FF has a linearization type of ‘linear with input’.

DD = Device Description

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