KROHNE IFM6080KEEx User Manual
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Magnetic inductive
flowmeters
ALTOFLUX
IFM 6080 K / i-EEx
with
IFC 090 i -EEx
signal converter
7.30828.31
1 Contents
In this addition only the points which differ from the standard Installation and Operating Instructions
are described. This addition is only valid for compact flowmeters with the IFC090 i-EEx signal
converter with intrinsically safe signal in- and outputs.
1 CONTENTS........................................................................................................................2
2 DESCRIPTION OF THE SYSTEM.....................................................................................3
3 INSTALLATION IN THE PIPELINE....................................................................................3
4 ELECTRICAL CONNECTION............................................................................................3
5 CONNECTION DIAGRAMS OF THE SIGNAL IN/OUTPUTS ............................................6
6 OPERATION OF THE SIGNAL CONVERTER...................................................................6
7 SERVICE............................................................................................................................7
7.1 REPLACEMENT OF THE POWER SUPPLY FUSE................................................7
7.2 REPLACEMENT OF THE ELECTRONIC UNIT.......................................................8
8 PART NUMBERS...............................................................................................................8
9 TECHNICAL DATA.............................................................................................................9
10 MAINTENANCE .................................................................................................................9
11 CERTIFICATE OF CONFORMITY...................................................................................10
2
2 Description of the system
The explosion protected compact-flowmeters differ from the standard flowmeters mainly in their
"internal assembly". Several types of protection are used in the compact flowmeter
IFM 6080 K / i-EEx, depending on the ordered type of the connection compartment of the signal
converter housing. See following overview:
Electronic compartment signal converter housing
EEx d (Flameproof enclosure)
Connection compartment signal converter housing
- Housing and connection terminals for power supply:
standard: EEx e (Increased safety)
optional: EEx d (Flameproof enclosure)
- Connection terminals of signal in/outputs (Current, Pulse/status/control and Fieldbus)
always EEx ia (Intrinsic safety, category ia)
Primary heads
DN2.5 - DN15: EEx m (Encapsulation) and EEx e (Increased safety)
DN25 - DN80: EEx d (Flameproof enclosure)
Internal electrode circuit
EEx ib (Intrinsic safety, category ib)
3 Installation in the pipeline
The installation of the compact flowmeter in the pipeline is equal to that of the standard compact
flowmeters.
4 Electrical connection
For the electrical connection of the compact flowmeter the relevant national standard codes of
practice for "Electrical installations of buildings" and "Electrical apparatus for use in potentially
explosive atmospheres" have to be consulted.
In the connection compartment of the IFM 6080 K/ i-EEx the terminals for the intrinsically safe
signal in/outputs and the non-intrinsically safe power supply circuits are placed. The location of the
connection terminals is shown in the sketch on the next page.
The cable for the signal in/outputs leading into the IFM 6080 K / i-EEx is intrinsically safe. The
connection of this cable must be carried out conform the requirements specified in the relevant
national standard code of practice for the installation of electrically apparatus with type of
protection "i".
3
g
Connection of signal-in/outputs
(intrinsically safe)
Connection power supply
(non-intrinsically safe)
With each in/output module a certain in/output function can be realised, see following overview:
In/Output
Function Electrical data
module
P-SA passive current output Current: 4..20 mA
Working voltage: 8.. 30 V DC
Voltage drop: 8 V at 4 mA
FA-ST passive pulse/status output or
control input (selectable through
software options)
Working voltage: 6..30 V DC
Working current: < 110 mA
Voltage drop
in ON-state: < 2 V at 110 mA
Leakage current
in OFF-state: < 900 µA at 30 V
Control input
Input voltage LOW level: < 3 V
Input voltage HIGH level: > 7 V
Frequency range: 0.. 12 KHz
DC-I intrinsically safe voltage source,
to be used in combination with
modules P-SA and FA-ST
Voltage: 20 V DC
Maximum current: 30 mA
Internal resistance: 260 Ω
F-PA passive Fieldbus interface conform FISCO model
The functionality of the terminals for signal in/outputs is depending on the version of the
IFC090 i-EEx electronic-unit installed. Each version is equipped with a different pair of in/output
modules. Following versions are possible:
IFC090 i-EEx version Order no. MODIS module Terminal desi
Ex-i1 2.11582.01 P-SA FA-ST
Ex-i2 2.11582.03 P-SA F-PA
I⊥
I⊥
IB1
ID
nation
B1⊥
D⊥
Ex-i3 2.11582.02 P-SA DC-I I+ I
Ex-i4 2.11582.04 FA-ST F-PA B1
B1⊥
D
D⊥
Ex-i5 2.11582.05 FA-ST DC-I B1+ B1
Ex-i6 2.11582.06 FA-ST FA-ST B2
B2⊥
B1
B1⊥
The non-intrinsically safe terminals for the power supply 1L and 0L have to be wired conform
the relevant standard code of practice for electrical apparatus for use in potentially explosive
4
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