KROHNE IFC-020 User Manual

© KROHNE 12/2002	DIN A4:	7.10003.31.00
	US:	7.10003.71.00

GR

Condensed

Instructions

IFC 020 K

IFC 020 F

IFC 020 E

Signal converters for electromagnetic flowmeters

Applicable to

Software Versions

● IFC 020 K and

IFC 020 F

No. 3170330200

● IFC 020 E

No. 3175870200

				Variable area flowmeters
				Vortex flowmeters
	Contents			Flow controllers
				Electromagnetic flowmeters
	1	Electrical connection: Power	1/1-1/8	Ultrasonic flowmeters
	2	Electrical connection: Outputs	2/1-2/4	Mass flowmeters
	3	Start-up	3/1
				Level measuring instruments
	4	Operator control of signal converter	4/1-4/4

Communications technology

PLEASE NOTE

These concise instructions do not include the following: device description, technical data, standards, approvals, etc., nor conditions pertaining to product liability and warranty.

The operator is, however, obligated to take note of these sections in the detailed Installation and Operating Instructions.

Engineering systems & solutions

Switches, counters, displays and recorders

Heat metering

Pressure and temperature

Part A System installation and start-up

1 Electrical connection: power supply

1.1 Important installation notes

PLEASE NOTE !

1.1.1 Location

•Electrical connection in accordance with VDE 0100 ”Regulations governing heavy-current installations with line voltages up to 1000 V” or equivalent national regulations.

•Do not cross or loop cables inside the terminal compartment.

•Use separate cable entries (see below) for power supply, field current cables, signal lines, outputs and inputs.

•Protect flowmeters or switchgear cabinets with built-in devices from direct sunlight. Fit a sunshade if necessary.

•When installed in switchgear cabinets, signal converters must be adequately cooled, e.g. use fans or heat exchangers.

•Do not expose signal converters to intense vibration.

1.1.2 Only for separate systems/signal converters (F- and E versions)

•Keep distance between primary head and signal converter as short as possible. Refer to Sect. 1.3.4 for maximum permissible length of signal and field current cables.

•Use the supplied Krohne signal cable A (Type DS), standard length 10 m (33 ft).

•Always calibrate primary head and signal converter together. Therefore, when installing, ensure primary constant GKL is identical; refer to instrument nameplate for the primary head. If the GKL is not identical, set the signal converter to the GKL of the primary head.

Refer also to Sections 4.

•Dimensions of signal converter; refer to Section 10.4.

1.1.3 Cable entries (K- and F- versions)

Number of cable entries: 2 for the compact flowmeters

4 for the seperate IFC 020 F signal converter

	NOTE: Ensure gaskets are fitted correctly and maintain
			3
	the following max. torques!
	1	Max. torques for PG 13.5,
		1/2“ NPT or 1/2“ PF adapters: 4 Nm / 2.8 ft x lbf	1
	2	Max. torques for PG 13.5 only: 3 Nm / 2.1 ft x lbf
			2
	3	Gasket

A)PG 13.5 cable entries

These cable entries may only be used for flexible electrical cables if the relevant electrical regulations so allow, e.g. National Electric Code (NEC).

Do not fix rigid metal conduits (IMC) or flexible plastic conduits to the PG 13.5 cable entries, refer to “Point B, C” below (1/2” NPT or PF adapters).

B) 1/2“ NPT adapters C) 1/2“ PF adapters

For most North American systems the regulations require that electrical conductors be laid in conduits, particularly where power voltages > 100 V AC are concerned.

In such cases, use the 1/2” NPT or 1/2” PF adapters to which flexible plastic conduits can be screwed. Do not use rigid metal conduits (IMC)!

Lay conduits such that no moisture can penetrate into the converter housing.

Should there be risk of any condensation water forming, fill the cross-section of the conduit around the cables at these adapters with a suitable sealing compound.

1/1 Condensed instructions IFC 020

Connection to power 1.2

PLEASE NOTE !

•Rated values: The flowmeter housings protecting the electronic equipment from dust and moisture must always be kept closed. The selected creepage distances and clearances have been dimensioned in conformity with VDE 0110 and IEC 664 for contamination category 2. Supply circuits and output circuits are designed to meet the standards of overvoltage class II.

•Safety isolation: the flowmeters (signal converters) must be provided with an isolating facility.

1. AC Version	2. AC Version
230/240 V AC (200 - 260 V AC)	200 V AC (170 - 220 V AC)
switch-selectable to	switch-selectable to
115/120 V AC (100 - 130 V AC)	100 V AC (85 - 110 V AC)

•Note information on instrument nameplate: supply voltage and frequency

•The PE protective ground conductor for the power supply must be connected to the separate U-clamp terminal in the terminal compartment of the signal converter.

For exceptions (compact systems), refer to installation instructions for the primary head.

•Connection diagrams for electrical connection between primary head and signal converter: refer to Section 1.3.5 and 1.3.6.

DC Version (in preparation for IFC 020 E) 24 V DC (18 - 32 V DC)

•Note information on instrument nameplate: supply voltage and frequency.

•For measurement reasons, connect an FE functional ground conductor to the separate U-clamp terminal in the terminal compartment of the signal converter.

•If connected to a functional extra-low voltage source (24 V AC / DC, 48 V AC), provide for protective separation (PELV) in conformity with VDE 0100 / VDE 0106 or IEC 364 / IEC 536, or equivalent national regulations.

•Connection diagrams for power supply and electrical connection between primary head and signal converter: refer to Section 1.3.6.

Connection to power (K- and F- versions only)

Power fuse F1		Power supply					U-clamp terminal
(see Sect. 8.2)
AC: 100 – 240 V		L		N
								PE	protective conductor
DC: 24 V		1L	=	0L =				FE	functional ground conductor

for internal use only

For electrical connection of the IFC 020 E power supply see Section 1.3.6, connection diagrams III to VI.

Condensed instructions IFC 020

1/2

1.3Electrical connection of separate primary heads (F- and E- versions)

1.3.1 General remarks on signal lines A and B and field current line C

Proper operation of the equipment is ensured when Krohne signal lines A and B are used with foil screen and magnetic shield.

•Signal lines must be firmly installed.

•Shields are connected via stranded drain wires.

•Underwater or underground routing is possible.

•Insulating material flame-retardant to IEC 332.1 / VDE 0742.

•Low-halogen, unplasticized signal lines which remain flexible at low temperatures.

Signal line A (type DS) with double shielding

1Stranded drain wire, 1st shield, 1.5 mm2 or AWG 14

2Insulation

3Stranded wire 0.5 mm2 or AWG 20 (3.1 red/3.2 white)

4Special foil, 1st shield

5Insulation

6Mu-metal foil, 2nd shield

7Stranded drain wire, 2nd shield, 0.5 mm2 or AWG 20

8Outer sheath

Signal line B (type BTS) with triple shielding (bootstrap line), for IFC 020 E only

1Dummy glider wire

2Insulation (2.1 red/2.2 white)

3Special foil, 1st shield (3.1/3.2)

4Insulation (4.1/4.2)

5Stranded wire 0.5 mm2 or AWG 20 (5.1 red/5.2 white)

6Stranded drain wire, 1st shield, 0.5 mm2 or AWG 20 (6.1/6.2)

7Special foil, 2nd shield

8Stranded drain wire, 2nd shield, 1.5 mm2 or AWG 14

9Insulation

10Mu-metal foil, 3rd shield

11Stranded drain wire, 3rd shield, 0.5 mm2 or AWG 20

12Outer sheath

Field current line C (single shielding with IFC 020 F)

Line 2 x 0.75 mm2 (18 AWG) Cu, 2 x 1.5 mm2 (14 AWG) Cu or 2 x 2.5mm2 (12 AWG) Cu single shielding (Cu = copper cross section)

The cross section depends on the required cable length, see table in Section 1.3.4.

1.3.2Grounding of primary head

•All flowmeters must be properly grounded.

•The grounding conductor should not transmit any interference voltages.

•Do not ground any other electrical device together with this conductor.

•The primary head is connected to ground by means of an FE functional ground conductor.

•Special information on grounding various primary heads is contained in the separate installation instructions for primary heads.

•These instructions also contain detailed descriptions on how to use grounding rings and how to install primary heads in metal or plastic pipes or internally coated pipelines.

1/3

Condensed instructions IFC 020

Stripping (preparation) of signal cable A and B 1.3.3

Please note the different lengths given in the table for signal converter and primary head.

Length		Converter			Primary			Customer-supplied materials
mm	IFC 020 F + E		only IFC 020 E		head			W	Insulation tubing (PVC), Ø 2.0 - 2.5 mm (dia. 1”)
(inch)	Signalcable A		Signalcable B					X	Heat-shrinkable tubing or cable sleeve
a	55	(2.17)	70	(2.76)	90	(3.54)		Y	Wire end sleeve to DIN 41 228: E 1.5-8
b	10	(0.39)	50	(1.97)	98	(0.31)		Z	Wire end sleeve to DIN 41 228: E 0.5-8
c	15	(0.59)	25	(0.98)	25	(0.98)
d	58	(0.31)	78	(0.31)	98	(0.31)
e	–		50	(1.97)	70	(2.76)
f	–		78	(0.31)	98	(0.31)

Signal cable A (type DS) double shielding, for primary head and IFC 020 E

Signal cable A bending radius ≥ 50 mm (≥ 2“)

Signal cable A (type DS) double shielding, for IFC 020 F

Signal cable A bending radius ≥ 50 mm (≥ 2“)

For cable fixation in signal converter housing IFC 020 F see illustration in section 10.4

External shielding of signal cable A (Type DS)

Wrap stranded drain wire (7) around the mu-metal foil (6) and clamp under the shield terminal in the signal converter terminal box (see also diagram in Sect. 1.3.5).

Signal line B (type BTS) with triple shielding (bootstrap), for IFC 020 E

Signal line B bending radius ≥ 50 mm (≥ 2”)

Condensed instructions IFC 020

1/4

1.3.4Cable lengths (max. distance between signal converter and primary head)

Abbreviations and explanatory notes

used in the following tables, diagrams and connection diagrams

ASignal cable A (type DS), with double shielding, see diagram A for max. length

BSignal line B (type BTS) with triple shielding, max. length see diagram B (IFC 020 E only)

CField current cable min. cross-section (AF) and max. length,

(with single shielding for IFC 020 F), see Table

DHigh-temperature silicone cable, 3 × 1.5 mm2 (14 AWG) Cu, (with single shielding, max. length 5 m (16 ft)

EHigh-temperature silicone cable, 2 × 1.5 mm2 (14 AWG) Cu, max. length 5 m (16 ft)

AF Cross section of field current line C in Cu, see table

L Cable length

κElectrical conductivity of the process liquid

ZD Intermediate connection box required in connection with cables D and E for primary heads ALTOFLUX IFS 4000 F, PROFIFLUX IFS 5000 F and VARIFLUX IFS 6000 F in cases where process temperatures exceed 150 °C (302 °F)

Recommended length of signal cable A (Type DS) and B (Type BTS) (Signal cable B, Type BTS, for IFC 020 E only)

Primary head	Meter size						Signal cable
	DN mm			inch			A	B
AQUAFLUX F	010	- 1000		3/8	- 40		A1	B1
ECOFLUX IFS1000 F	010	-	15	3/8	- 1/2		A4	B3
	025	-	150	1	-	6	A3	B2
ALTOFLUX IFS 2000 F	150	-	250	6	- 10		A1	B1
ALTOFLUX IFS 4000 F	010	-	150	3/8	-	6	A2	B2
	200	- 1000		8	- 40		A1	B1
PROFIFLUX IFS 5000 F	002.5	-	15	1/10	- 1/2		A4	B3
	025	-	100	1	-	4	A2	B2
VARIFLUX IFS 6000 F	002.5	-	15	1/10	- 1/2		A4	B3
	025	-	80	1	-	3	A2	B2
ALTOFLUX M 900	010	-	300	3/8	- 12		A1	B1

Diagram A Diagram B (for IFC 020 E only)

Field current cable C: (for IFC 020 F single shielding!)

	Length				Cross section AF (Cu), minimum
	0	- 150 m	5	- 500 ft	2 × 0.75 mm2 Cu	/ 2 × 18 AWG
	150	- 300 m	500	- 1000 ft	2 × 1.50 mm2 Cu	/ 2 × 14 AWG
	300	- 600 m	1000	- 1900 ft	2 × 2.50 mm2 Cu	/ 2 × 12 AWG
1/5				Condensed instructions IFC 020