KROHNE IFMx080KATEX User Manual

Name: KROHNE IFMx080KATEX
Brand: KROHNE
SKU: 1601258
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	© KROHNE 07/02	7.02253.21.00

Addition to the

installation and operating instructions

ALTOFLUX IFM 4080 K-EEx / i-EEx

PROFIFLUX IFM 5080 K-EEx / i-EEx

VARIFLUX IFM 6080 K-EEx / i-EEx

Compact electromagnetic flowmeters

Variable area flowmeters

Vortex flowmeters

Flow controllers

Electromagnetic flowmeters

Ultrasonic flowmeters

Mass flowmeters

Level measuring instruments

Communications technology

Engineering systems & solutions

Switches, counters, displays and recorders

Heat metering

Pressure and temperature

WARNING !	No changes regarding safety may be made to the devices. Unauthorized
	changes might affect the explosion safety of the devices.

Be sure to follow these instructions !

IMPORTANT ! ∙ The prescriptions and regulations as well as the electrical data described in the EC-type examination certificate must be obeyed.

∙Beside the instructions for electrical installations in non-hazardous locations according to the applicable national standard (e.g. IEC 364), especially the regulations in EN 60079-14 "Electrical installations in hazardous locations" or equivalent national standard must be followed.

∙Installation, establishment, utilization and maintenance are only allowed to be executed by personnel with an education in explosion safety!

These additional instructions are an extension to the Installation and Operating Instructions and only apply to the EEx version of the IFM x080 K - EEx or IFM x080 K / i -EEx electromagnetic compact flowmeter. All technical information described in the “Installation and Operating Instructions ” are applicable, when not specifically excluded, completed or replaced by the instructions in these additional instructions.

Content

1	System components	3
1.1	General information ALTOFLUX IFM 4080 / … EEx	4
1.2	General information PROFIOFLUX IFM 5080 / … EEx	6
1.3	General information VARIFLUX IFM 6080 / … EEx	8
1.4	IFC 090 / … -EEx signal converter	10
1.4.1	Electronics compartment	10
1.4.2	Terminal compartment	10
1.5	Electronics unit	11

2	Electrical connection	11
2.1	Equipotential bonding system	12
2.2	Connecting cables	12
2.3	Connection diagram	13
2.4	Regular IFC 090 - EEx electronics unit	14
2.5	Modis version IFC 090 I	15
2.6	Connection diagrams MODIS	16
3	Operation of the signal converter	22
4	Maintenance	22
5	Service	23
5.1	General information for replacements	24
5.2	Replacement of electronics unit	25
5.3	Replacement of power fuse(s)	27
5.4	Changing power supply voltage	30
6	Ordering information	31
6.1	Regular IFC 090 - EEx electronics unit	31
6.2	MODIS version IFC 090 - EEx electronics unit	31
7	Declaration of conformity	31
7.1	Declaration of conformity of ALTOFLUX IFM 4080 K … EEx	32
7.2	Declaration of conformity of PROFIOFLUX IFM 5080 … EEx	33
7.3	Declaration of conformity of VARIFLUX IFM 6080 … EEx	34
8	EC-type examination Certificates	34
8.1	ALTOFL UX IFM 4080 K … EEx Certificate	35
8.2	PROFIOFLUX IFM 5080 … EEx Certificate	38
8.3	VARIFLUX IFM 6080 … EEx Certificate	40

1 System components

1.1General information ALTOFLUX IFM 4080 / … EEx

This meter complies with the European Directive 94/9/EC (ATEX 100a) and approved for hazardous classified locations of Zone 1 and 2 under EC-type Examination Certificate number:

KEMA 01 ATEX 2200 X

The compact flowmeter is available in two types, namely: IFM 4080 K-EEx regular explosion protected version;

IFM 4080 K/i-EEx, MODIS version. This type has intrinsically safe signal output circuits, which are provided by two on the IFC 090i-EEx electronics unit installed MODIS modules.

The regular IFM 4080 K-EEx compact flowmeter is designed for ambient temperatures (Ta) in the range of -20°C (special -40°C) up to +60°C, the MODIS version type IFM 4080 K/i-EEx is rated for ambient temperatures from -20°C up to +60°C.

The allowed process liquid temperature is limited by the maximum occuring surface temperature of system components in the combustible atmosphere that (possibly) surrounds the apparatus, determined by the temperature class of the atmosphere (first column of the tables). See table 1 and 2 below for details.

For dusts the second column of the two below listed tables is applicable.

Temperature classification DN200 and larger

Temperature class	Max. surface	Maximum process liquid temperature
Temperature class	temperature
(for gases)	temperature	Ta ≤ 40°C	Ta ≤ 50°C	Ta ≤ 60°C
(for gases)	(for dusts)	Ta ≤ 40°C	Ta ≤ 50°C	Ta ≤ 60°C
	(for dusts)
T6	T85°C	75°C	70°C	70°C
T5	T100°C	95°C	90°C	75°C
T4	T135°C	130°C	115°C	75°C
T3	T180°C	150°C	115°C	75°C
Temperature classification DN 25…150 with PFA liner
Temperature class	Max. surface	Maximum process liquid temperature
Temperature class	temperature
(for gases)	temperature	Ta ≤ 40°C	Ta ≤ 50°C	Ta ≤ 60°C
(for gases)	(for dusts)	Ta ≤ 40°C	Ta ≤ 50°C	Ta ≤ 60°C
	(for dusts)
T6	T85°C	70°C	70°C	70°C
T5	T100°C	85°C	85°C	85°C
T4	T135°C	120°C	120°C	115°C
T3	T180°C	180°C	180°C	115°C
Use heat-resistant cables above		-	-	50°C

The IFM 4080 K / … EEx flowmeter consists of the IFC 090/…-EEx signal converter unit, which is screwed on top of the prim ary head (i.e. measuring unit).

The compact flowmeter is marked with one of the codes below, depending on the meter size:

DN25-150	II 2GD EEx d [ib] IIC T6…T3 (EEx d terminal compartment) or
	II 2GD EEx de [ib] IIC T6…T3 (EEx e terminal compartment).
DN200 and up	II 2GD EEx de [ib] IIC T6…T3 (both EEx d and EEx e terminal compartment).

In case of the MODIS version IFM 4080 K / i-EEx , the electronics unit of type IFC 090i-EEx is provided with protective modules, which provide intrinsically safe output signals of category "ia".

The flowmeter is then marked with one of the following codes:

	DN25-150	II 2GD EEx d [ia] [ib] IIC T6…T3 (EEx d terminal compartment) or
		II 2GD EEx de [ia] [ib] IIC T6…T3 (EEx e terminal compartment)
	DN200 and up	II 2GD EEx de [ia] [ib] IIC T6…T3
		(both EEx d and EEx e terminal compartment)

For details see the EC-type Examination Certificate in Sect. 8.1 of these instructions .

Primary head

The primary head contains two field coils (see table for type of protection) and two electrodes in type of protection intrinsic safety category "ib" according to EN 50020.

Types of protection of primary head

Meter size	Type of protection
DN25 up to DN150	Housing:	Flameproof enclosure "d" according to EN 50018
DN25 up to DN150
	Electrodes:	Intrinsic safety "ib" according to EN 50020
DN200 and larger	Field coils:	Increased safety "e" according to EN 50019
DN200 and larger	Electrodes:	Intrinsic safety "ib" according to EN 50020
	Electrodes:	Intrinsic safety "ib" according to EN 50020

NOTE: The intrinsically safe electrode circuits of the IFM 4080K/…-EEx compact flowmeter are only internal circuits and not accessible for the customer

Data plates of ALTOFLUX IFM 4080 K IFM 4080 K … EEx

Kerkeplaat 12

3313 LC Dordrecht

The Netherlands

Altometer

0344

YEAR OF

TYPE

IFM 4080 K-EEx

PRODUCTION

KEMA 01 ATEX 2200 X

2002

II 2GD EEx d

[ib] IIC T6...T3

IP65/67

AMBIENT TEMPERATURE: -40...+60%%DC.

T85...180%%DC

SEE CERTIFICATE FOR MAXIMUM TEMPERATURES.

SERIALNO.

POWER

Vac

% -

+30%

Vdc

-25%

48-63Hz

10VA

Um=253V

INTRINSICALLY SAFE CIRCUITS: ELECTRODE CIRCUIT,

ONLY INTERNAL CONNECTIONS.

DO NOT OPEN ENCLOSURE WHEN ENERGIZED !

WAITING TIME BEFORE OPENING OF THE FLAMEPROOF

ENCLOSURE: T6 %%242 20 MIN.;

T5 %%242 11 MIN.

MAX. SHORT-CIRCUIT CURRENT OF MAINS:

SPACE FOR ADDITIONAL DATA

IFM 4080 K / i … EEx

Kerkeplaat 12

3313 LC Dordrecht

The Netherlands

Altometer

0344

YEAR OF

TYPE

IFM 4080 K/i-EEx

PRODUCTION

KEMA 01 ATEX 2200 X

2002

II 2GD EEx d

[ib] [ia] IIC T6...T3

IP65/67

AMBIENT TEMPERATURE: -20...+60%%DC.

T85...180%%DC

SEECERTIFICATEFORMAXIMUMTEMPERATURES.

SERIAL NO.

POWER

Term. 24Vac,+10%/-15%,48-63Hz,10W

1L~

,0L

24Vdc,+30%/-25%,10W,Um=253V

Term. 100...230Vac,+10%/-15%

L, N

48-63Hz,8W,Um=253V

DO NOT OPEN ENCLOSURE WHEN ENERGIZED !

WAITING TIME BEFORE OPENING OF THE FLAMEPROOF

ENCLOSURE: T6 %%242 20 MIN.;

T5 %%242 11 MIN.

MAX. SHORT-CIRCUIT CURRENT OF MAINS:

INTRINSICALLYSAFECIRCUITS

Electrode circuit: only internal connections

EEx ib IIC

%%uTerm.

Passive output

I /I

B1/B1

Ui=30V; Ii=250mA; Pi=1.0W

B2/B2

Ci=5nF; Li=0;

EEx ia IIC

D/D

Passive output

Ui=30V; Ii=300mA; Pi=4.2W

Ci=5nF; Li=0;

EEx ia IIC

I+/I

Active output

B1+/B1

Uo=23.5V; Io=98mA; Po=0.6W

Co=132nF; Lo=4mH;

EEx ia IIC

1.2PROFIFLUX IFM 5080 K … EEx

The Profiflux IFM 5080 K/…-EEx magnetic-inductive compact flowmeter is in accordance with the European Directive 94/9/EC (ATEX 100a) and approved for hazardous classified locations of Zone 1 and 2 under EC-type Examination Certificate number:

KEMA 01 ATEX 2262 X

The compact flowmeter is available in two types, namely:

•IFM 5080 K-EEx regular explosion protected version;

•IFM 5080 K/i-EEx, MODIS version. This type has intrinsical safe signal output circuits, which are provided by two on the IFC 090i-EEx electronics unit installed MODIS modules (see Sect. 1.5 for details.

The regular IFM 5080 K-EEx compact flowmeter as well as the so-called MODIS version type IFM 5080 K/i-EEx is designed for ambient temperatures (Ta) of -20°C up to +60°C. The allowed process liquid temperature is limited by the maximum occuring surface temperature of system components in the combustible atmosphere that (possibly) surrounds the apparatus, determined by the temperature class of the atmosphere, see table 1 below.

Temperature classification

Temperature	Max. surface	Maximum process liquid temperature
Class	Temperature	Ta ≤ 40°C	Ta ≤ 50°C	Ta ≤ 60 °C

T6	T80°C	60°C	55°C	not allowed
T5	T95°C	75°C	75°C	70°C
T4	T130°C	115°C	115°C	75°C
T3	T165°C	155°C	135°C	75°C

The IFM 5080 K/…-EEx compact flowmeter consists of the IFC 090/…-EEx signal converter unit, which is screwed on top of the IFS 5000-EEx primary head (i.e. measuring unit). The compact flowmeter is marked with the following code below:

II 2 GD EEx dme [ib] IIC T6…T3

In case of the MODIS version IFM 5080 K/i-EEx, the electronics unit of type IFC 090i-EEx is provided with protective modules, which provide intrinsical safe output signals of category "ia". The flowmeter is then marked with the code

II 2 GD EEx dme [ib] [ia] IIC T6…T3

For details see the EC-type Examination Certificate in Sect. 8.2 at the end of these additional instructions.

Term. 24Vac,+10%/-15%,48-63Hz,10W

1L~,0L ~ 24Vdc,+30%/-25%,10W,Um=253V

Term. 100...230Vac,+10%/-15%

L, N 48-63Hz,8W,Um=253V

Primary head

The IFS 5000-EEx primary head of the IFM 5080 K/…-EEx compact flowmeter contains two field coils above and below the measuring tube and two electrodes inside the ceramics measuring tube on both sides. The field coils have type of protection increased safety "e" according to EN 50019 and encapsulation "m" according to EN 50028. The electrodes are provided with type of protection intrinsic safety "ib" according to EN 50020.

The primary head is available in meter sizes DN2.5 up to DN100. The IFC 090/…-EEx signal converter (described in Sect. 1.4-1.5) is mounted on top of the primary head by four recessed head screws of size M6 with internal hexagonal socket set.

Note: The intrinsically safe electrode circuits of the IFM 5080K/…-EEx compact flowmeter are only internal circuits and not accessible for the customer.

Data plates of ALTOFLUX IFM 5080 K

IFM 5080 K … EEx

Kerkeplaat 12

3313 LC Dordrecht

The Netherlands

Altometer

TYPE IFM 5080 K-EEx

KEMA 01 ATEX 2262 X

II 2GD EEx dme [ib] IIC T6...T3

AMBIENT TEMPERATURE: -20...+60%%DC.

SEE CERTIFICATE FOR MAXIMUM TEMPERATURES. SERIAL NO.

0344

YEAR OF

PRODUCTION

2002

IP65/67

T80...165%%DC

POWER

Vac

% -

Vdc

+30%

-25%

48-63Hz

10VA

Um=253V

8 W

INTRINSICALLY SAFE CIRCUITS: ELECTRODE CIRCUIT,

ONLY INTERNAL CONNECTIONS.

DO NOT OPEN ENCLOSURE WHEN ENERGIZED !

WAITING TIME BEFORE OPENING OF THE FLAMEPROOF

ENCLOSURE: T6 %%242 20 MIN.;

T5 %%242 11 MIN.

MAX. SHORT-CIRCUIT CURRENT OF MAINS:

SPACE FOR ADDITIONAL DATA

IFM 5080 K / i … EEx

Kerkeplaat 12

3313 LC Dordrecht

The Netherlands

Altometer

TYPE IFM 5080 K/i-EEx

KEMA 01 ATEX 2262 X

II 2GD EEx dme [ib] [ia] IIC T6...T3

AMBIENT TEMPERATURE: -20...+60%%DC.

SEE CERTIFICATE FOR MAXIMUM TEMPERATURES. SERIAL NO.

POWER

0344

YEAR OF

PRODUCTION

2002

IP65/67

T80..165%%DC

DO NOT OPEN ENCLOSURE WHEN ENERGIZED !

WAITING TIME BEFORE OPENING OF THE FLAMEPROOF

ENCLOSURE:

T6 %%242 20 MIN.; T5 %%242 11 MIN.

MAX. SHORT-CIRCUIT CURRENT OF MAINS:

INTRINSICALLY SAFE CIRCUITS

Electrode circuit: only internal connections

EEx ib IIC

%%uTerm.

Passive output

I /I

B1/B1

Ui=30V; Ii=250mA; Pi=1.0W

B2/B2

Ci=5nF; Li=0;

EEx ia IIC

D/D

Passive output

Ui=30V; Ii=300mA; Pi=4.2W

Ci=5nF; Li=0;

EEx ia IIC

I+/I

Active output

B1+/B1

Uo=23.5V; Io=98mA; Po=0.6W

Co=127nF; Lo=4mH;

EEx ia IIC

1.3VARIFLUX IFM 6080 K … EEx

The Variflux IFM 6080 K/…-EEx magnetic-inductive compact flowmeter is in accordance with the European Directive 94/9/EC (ATEX 100a) and approved for hazardous classified locations of Zone 1 and 2 under EC-type Examination Certificate number:

KEMA 02 ATEX 2021 X

The compact flowmeter is available in two types, namely:

•IFM 6080 K-EEx regular explosion protected version

•IFM 6080 K/i-EEx, MODIS version. This type has intrinsical safe signal output circuits, which are provided by two on the IFC 090i-EEx electronics unit installed MODIS modules.

The regular IFM 6080 K-EEx compact flowmeter is designed for ambient temperatures (Ta) in the range of -40°C up to +60°C, the so-called MODIS version IFM 6080 K/i-EEx is rated for ambient temperatures from -20°C up to +60°C. The allowed process liquid temperature is limited by the occuring surface temperature of system components in the combustible atmosphere that (possibly) surrounds the apparatus, determined by the temperature class of the atmosphere, see table.

Temperature classification

Temperature	Maximum surface	Maximum process liquid temperature
class	Temperature	Ta ≤ 50°C	Ta ≤ 60°C
T6	T80°C	70°C	70°C
T5	T95°C	85°C	85°C
T4	T130°C	120°C	100°C
T3	T190°C	180°C	100°C

The regular IFM 6080 K-EEx compact flowmeter consists of the IFC 090-EEx signal converter, which is screwed on top of the IFS 6000-EEx primary head (i.e. measuring unit). The compact flowmeter is marked with the following code below, depending on the meter size:

•DN2.5-15: II 2GD EEx dme [ib] IIC T6…T3

•DN25-80: II 2GD EEx d [ib] IIC T6…T3 ("EEx d" terminal compartment) or

II2GD EEx de [ib] IIC T6…T3 ("EEx e" terminal compartment)

•DN2.5-15: II 2GD EEx dme [ib] [ia] IIC T6…T3

•DN25-80: II 2GD EEx d [ib] [ia] IIC T6…T3 ("EEx d" terminal compartment) or

II2GD EEx de [ib] [ia] IIC T6…T3 ("EEx e" terminal compartment)

All meters are also marked with the maximum surface temperature T80…T190°C because of the dust classification. See for details the EC-type examination certificate in Sect. 8.3 of these additional instructions.

Primary head

The IFS 6000-EEx primary head of the IFM 6080 K/…-EEx compact flowmeter contains two field coils and two electrodes in type of protection intrinsic safety category "ib" according to EN 50020. The type of protection of the field coils depends on meter size.

Types of protection of primary head

Meter size	Type of protection
DN2.5 up to DN15	Field coils:	Increased safety "e" according to EN 50019
DN2.5 up to DN15	Encapsulation "m" according to EN 50028
	Electrodes:	Intrinsic safety "ib" according to EN 50020
DN25 up to DN80	Housing:	Flameproof enclosure "d" according to EN
DN25 up to DN80	50018
	Electrodes:	Intrinsic safety "ib" according to EN 50020

The IFC 090/…-EEx signal converter (described in Sect. 1.4-1.5) is mounted on top of the primary head by four recessed head screws of size M6 with internal hexagonal socket set.

Note

The intrinsically safe electrode circuits of the IFM 6080K/…-EEx compact flowmeter are only internal circuits and not accessible for the customer.

The two field coils inside the primary head are connected in series and provided with the type of protection increased safety "e" and encapsulation "m" (DN2.5-15). Meter size DN25-80 has a flameproof primary housing.

Data plates of ALTOFLUX IFM 6080 K

IFM 6080 K … EEx

IFM 6080 K / i … EEx

Kerkeplaat 12

3313 LC Dordrecht

The Netherlands

Altometer

0344

Altometer

0344

TYPE

IFM 6080 K-EEx

YEAR OF

TYPE

IFM 6080 K/i-EEx

YEAR OF

PRODUCTION

KEMA 02 ATEX 2021 X

2002

KEMA 02 ATEX 2021 X

2002

II 2GD EEx d

[ib] IIC T6...T3

IP65/67

II 2GD EEx d

[ib] [ia] IIC T6...T3

T80...190%%DC

IP65/67

AMBIENT TEMPERATURE: -40...+60%%DC.

AMBIENT TEMPERATURE: -20...+60%%DC.

T80...190%%DC

SEE CERTIFICATE FOR MAXIMUM TEMPERATURES.

SERIAL NO.

POWER

Vac

% -

Vdc

+30%

POWER

Term. 24Vac,+10%/-15%,48-63Hz,10W

1L~,0L

24Vdc,+30%/-25%,10W,Um=253V

-25%

48-63Hz

10VA

Um=253V

Term. 100...230Vac,+10%/-15%

INTRINSICALLY SAFE CIRCUITS: ELECTRODE CIRCUIT,

L, N

48-63Hz,8W,Um=253V

ONLYINTERNALCONNECTIONS.

DO NOT OPEN ENCLOSURE WHILE ENERGIZED !

WAITING TIME BEFORE OPENING OF THE FLAMEPROOF

ENCLOSURE:

T6 %%242 20 MIN.;

T5 %%242 11 MIN.

ENCLOSURE: T6 %%242 20 MIN.;

T5 %%242 11 MIN.

MAX. SHORT-CIRCUIT CURRENT OF MAINS:

INTRINSICALLY SAFE CIRCUITS

Electrode circuit: only internal connections

EEx ib IIC

%%uTerm.

Passive output

I /I

B1/B1

Ui=30V; Ii=250mA; Pi=1.0W

B2/B2

Ci=5nF; Li=0;

EEx ia IIC

SPACE FOR ADDITIONAL DATA

D/D

Passive output

Ui=30V; Ii=300mA; Pi=4.2W

Ci=5nF; Li=0;

EEx ia IIC

I+/I

Active output

B1+/B1

Uo=23.5V; Io=98mA; Po=0.6W

Co=132nF; Lo=4mH;

EEx ia IIC

1.4IFC 090/…-EEx signal converter

The IFC 090/…-EEx signal converter consists of a cylindrical housing of die-casted aluminum, which has two separate compartments, divided from each other by an integrated wall with casted flameproof terminal feed-through. The neck at the bottom of the housing contains a flameproof cable feed-through. The signal converter housing is on both ends closed by a cylindrical threaded cover with O-ring sealing. The housing has an ingress protection degree of at least IP67 conform to EN 60529.

1.4.1 Electronics compartment

The electronics compartment accommodates the pre-certified IFC 090…-EEx electronics unit with approval number PTB 98 ATEX 2012 U. The electronics compartment is designed with type of protection flameproof enclosure "d" according to EN 50018. It is closed by a threaded flameproof display cover with glass window.

1.4.2 Terminal compartment

The terminal compartment has seven terminals for connection of the power supply and signal output circuits. Sect. 2 (Connection diagram)shows the terminal arrangement for the regular and MODIS version of the IFC 090/…-EEx signal converter. The terminal arrangement of the MODIS version (i.e. IFC 090i-EEx) is shown in Sect. 2 (Modis Converter). Two of the terminals are used for connection of the non-intrinsically safe power supply and four terminals (marked with "*") for the intrinsically safe, category "ia" signal outputs of the MODIS modules. The non-intrinsically and intrinsically safe terminals are separated from each other by a metal dividing plate, which is screwed to the remaining (not connected) M4 terminal. The two non-intrinsically safe power supply terminals are covered by an insulating plate.

The terminal compartment (with standard type of protection increased safety "e") is standard equipped with two ATEX approved "EEx e" cable glands. The terminal compartment can also be provided as a flameproof enclosure "d", in which case ATEX approved "EEx d" cable glands of size Pg13.5, Pg16 or M20x1.5 are either factory installed or must be installed by the customer. For flameproof conduit systems, the terminal compartment must have type of protection flameproof enclosure "d" according to EN 50018. The conduits must be sealed by "EEx d" approved (within the ATEX 100a directive) sealing devices (i.e. stopping box) directly at the conduit entrances of the as flameproof enclosure performed terminal compartment.

1.5Electronics unit

This electromagnetic compact flowmeter can be equipped with the regular IFC 090-EEx or with the IFC 090i-EEx electronics unit with intrinsically safe signal outputs (i.e. MODIS version). This version is descripted in the following.

Regular IFC090-EEx electronics unit

The IFC 090-EEx is used in the regular IFM 4080 K-EEx and can be equipped with one of the following power supplies (depends on the area of application).

Electrical data for power supply

Power supply	Terminal	Function	Electrical data
	L	Live	Un = 100/115/200/230 Vac -15/+10%
AC-versions	N	Neutral
			Pn = approx. 10 VA, Um = 253 V
	PE	Protective Ground

	1L½	Live	Un = 24 V ac/dc
			AC: -15/+10%, Pn=10 VA
AC/DC-version	0L½	Neutral
			DC: -25/+30%, Pn=8 W
	FE	Functional Ground
			Um = 253 V

The IFC 090-EEx electronics unit is equipped with the following in-/output circuits. Terminals B1, B and B2 can be configured as status or pulse outputs or as control inputs via the software. See the table below for the electrical data of these in-/output circuits.

Electrical data of in-/output circuits

Terminals	Description	Nominal voltage	Maximum current
I+, I	Current output	15 V	22 mA
B1, B , B2	Pulse, status, control in-/outputs	32 V	150 mA

IFC 090i-EEx unit with MODIS modules

The IFC 090i-EEx electronics unit is equipped with a pair of MODIS-modules. It is equipped with one of the following power supplies.

Electrical data of IFC 090i-EEx electronics unit

Power supply		Terminals	Function	Electrical data
		L	Live	Un = 100…230 Vac –15%/+10%
AC-version		N	Neutral
				Pn = 15 VA, Um = 253 V
		PE	Protective Ground

		1L½	Live	Un = 24 Vac/dc
				AC:	-15%/+10% or 20.4…26.4 Vac
AC/DC-version		0L½	Neutral
				DC:	-25%/+30% or 18…32 Vdc
		FE	Functional Ground
				Pn = 10 W, Um = 253 V

NOTE:	The mains fuses for both electronics units are listed in Sect. 6 of this manual.

2 Electrical connection

2.1Equipotential bonding system

All EEx and EEx/i flowmeters must always be incorporated into the equipotential bonding system of the hazardous area. This connection can be achieved through the PE/FE conductor connected to the PE terminal in the terminal compartment (see figure of terminal arrangement below) or through a separate PE conductor, cross s ectional area at least 4 mm2, connected to the external PE clamp, placed below the converter housing.

2.2Connecting cables

NOTE: The below described cables are shown in the following connection diagram .

Cable A:

Signal cable for current output and binary outputs (pulse and status output): The cable parameters must be in accordance with the regulations in the EN 60079-14 "Electrical installations in hazardous locations" or an equivalent national standard. For the MODIS version with IFC 090iEEx electronics unit (right detail in connection diagram) the signal cable for the intrinsically safe signal in-/outputs must also conform the requirements as specified in the relevant standard national code of practice for the installation of electrical apparatus with type of protection Intrinsic Safety "i".

Cable B:

Power supply cable: The cable parameters must be in accordance with the regulations of the EN 60079-14 "Electrical installations in hazardous locations" or an equivalent national standard.

Rated voltage	³ 500 V
Examples:	H07...-., H05...-.

Equipotential bonding conductor	4 mm2 (equivalent to AWG 10)
Cross-sectional area:	4 mm2 (equivalent to AWG 10)

2.3Connection diagram

INTRINSICALLY SAFE

PE 100-230 Vac

SIGNAL IN-/OUTPUTS

100-230 Vac

(i.e. MODIS)

L½

24 Vac/dc

SIGNAL IN-/OUTPUTS

L½

FE 24 Vac/dc

IFC 090-EEx

Signal Converter

B1 B B2 I+

1L½0L½

BINARY

CURRENT

MAINS

Unused terminal

OUTPUTS

OUTPUT

SUPPLY

TERMINAL COMPARTMENT

Standard "EEx e" (Optional "EEx d")

Separation plate

ELECTRONICS COMPARTMENT (always "EEx d")

IFC 090i-EEx

Signal Converter

electrode circuits

field coil circuits

OPTION: MODIS

Flameproof (EEx d)

terminal feed-through

Flameproof (EEx d) cable

(OPTIONAL)

feed-through

Hazardous locations

of Zone 1 and 2

³ 4 mm

Field coil wires

BONDING CONDUCTOR

Coil

EQUIPOTENTIAL

Electrode cables

Flow tube

Coil

IFS 4000…-EEx

Primary Head

Intrinsically safe electrode circuits

Increased safe field coil circuit

2.4Regular IFC 090-EEx electronics unit

The field cables that enter the terminal compartment of the IFC 090-EEx signal converter unit (i.e. power supply, current and binary outputs) are non-intrinsically safe. To connect external devices to the signal output terminals, the wiring requirements for the type of protection of the

compartment (standard: increased safety "e", optional:IFS x000flameproof… - EEx "d") must be conform to the international or national standard involved (e.g. ENPrimary60079-head14).

The terminal arrangement is shown by figure 1 below.

Terminal arrangement in terminal compartment

PULSE, STATUS OUTPUTS

RESP. CONTROL INPUTS

BINARY

OUTPUTS

I+	I	L	N	(100…240Vac / 48…63 Hz)
CURRENT		L½	L½	(24Vac/dc)
CURRENT
OUTPUT

PE (Protective Earth) terminal

FE (Functional Earth) terminal

Passive pulse/status output

Active current output

B1 B B2

I+ I

I ≤ 150 mA	Uext	I ≤ 150 mA
I ≤ 150 mA	½	I ≤ 150 mA	+
Electronic or 000			Ri ≤ 500Ω mA
electro-		e.g. signal	Ri ≤ 500Ω mA
mechanical		indicator	_
totalizer

Uext ≤ 32Vdc/24 Vac

Note: The binary outputs (terminals B1, B and B2) can only be configured as passive outputs, the current output (terminals I+ and I) can only be configured as active output.

2.5MODIS version IFC 090i-EEx electronics unit

The field cables of the non-intrinsically safe power supply and the intrinsically safe, category "ia" signal outputs enter the terminal compartment of the IFC 090i-EEx signal converter unit via two separate entrances. To connect external devices to the intrinsically safe signal output terminals, the wiring requirements for their type of protection as well as of the compartment (standard: increased safety "e", optional: flameproof enclosure "d") must be conform to the international or national standard involved (e.g. EN 60079-14).

Terminal arrangement in terminal compartment

NC = not connected

Cable entrance for intrinsically safe signal cable

							Metal dividing
							plate IS / non-IS
							terminals
Connecting terminals							Connecting
Connecting terminals							terminals for
for intrinsically safe							non-intrinsically
signal in-/outputs							safe power supply
*	*	*	*	NC	1L½ 0L½		24 Vac/dc
*	*	*	*		L	N	100…240 Vac
				PE			Protective Earth terminal
							Cable entrance for
							non-intrinsically
							safe power supply
							cable

The non-intrinsically safe terminals for connection of the power supply (1L½ and 0L½) must be connected according to the relevant standard code of practice for electrical apparatus intended for use in potentially hazardous locations, type of protection Increased Safety "e" or type of protection Flameproof Enclosure "d", depending on the type of protection of the terminal compartment of the signal converter housing.

To gain access to the connection terminals of the power supply, the half-circular cover plate of insulating material must be slightly lifted at one end and then rotated downwards , see the instruction on the cover plate. After connection of the power supply cable, the half-circular cover plate must be restored into its original position, so that the minimum clearances and creepage distances towards the intrinsically safe signal in-/output terminals are maintained.

For details, see diagram on terminals compartment MODIS on next page.

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