KROHNE IFC 010 Converter Short EN User Manual

Page 4

4 IFC

010

1.2 Connection to power

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 sized 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 classes III and II, respectively.

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)
switchable to
115/120 V AC (100 - 130 V AC)

200 V AC (170 - 220 V AC)
switchable to
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 flow sensor.

Connection diagrams I and II for electrical connection between flow sensor and signal converter: refer to
Section 1.3.5.

3. AC Version

DC Version

48 V AC (41 - 53 V AC)
switchable to
24 V AC (20 - 26 V AC)

24 V DC (11-32 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 I and II for power supply and electrical connection between flow sensor and signal
converter: refer to Section 1.3.5.

Connection to power

Power fuse F1

Power

U-clamp terminal

AC: 100 – 240 V

PE protective

conductor

AC: 24 / 48 V

1L~ 0L~

DC: 24 V

L+

L–

}

functional ground

for

internal

use

only

Warning:
Instrument must be properly grounded to avoid electrical shock.