NIVELCO AnaCONT LE-100, Installation And Programming Manual, Page: 35 / 61

BKI 11 ATEX 0012 X

le00100a0600p_05

35 / 60
5.2.2. Wiring of Integrated instruments
The insrument can be connected directly to the suitable power suply unit. When extending the
cable, a junction box is needed to use for this purpouse. Shielding should be connected with
the shield of the extending cable and should be grounded at the signal processing device.

Make sure that the power supply is turned off at the source.

(Recommended cable: shielded cable with 6 x 0.5 mm
2
or greater cross section).

Turn on the power supply. After switching of the unit, necessary programming can be
done.
Colour codes of the wires:
Green – C1 relay output White – I One point (polarity-independent) of
loop current, power supply and HART
Yellow – CC relay output Brown – I Other point (polarity-independent) of
loop current, power supply and HART
Grey – C2 relay output Black – GND Grounding and shielding point
White
Green
Yellow
Grey
Braun
Black
Function box
Power
supply
Power supply
+HART
+Current output
HART modem
I
white (brown)
brown (white)
green
black
R
C1 C2
CC
yellow
grey
TR
A
N
SM
IT
TE
R
mA
IMPORTANT: The shielding of the transmitter should be grounded at the control room side to the EPH network. Resistance of the EPH network should be R

2
ohm measured from the neutral. To avoid disturbing noises, keep away of closeness to high-voltage cables. Especially critical can be the inductive
couplings of harmonics (which are present at frequency converter control) because even cable shielding does not supply effective protection against
these cases.
5.3. L
OOP
C
URRENT
C
HECKING WITH HAND INSTRUMENT
After removing the cover and lifting the Display Module, the actual loop current can be measured with an accuracy of ~ 5% by connecting a voltmeter (in the range of
200 mV) to the points indicated on the drawing above.
5.4. C
ONDITIONS OF
E
X APPLICATION

Intrinsically safe units with Ex ia IIB marking can only be used in certified intrinsically safe loops with the previously given technical data. (see values in special
data for Ex approved models under Point 3).

The size of the macrolon window of intrinsical safe equipment with metallic enclosure exceeds the limit, thus the devices must be protected against electrostatic
charges.
 Equipment with plastic housing are susceptible to electrostatic charges, thus the deivces must be protected against electrostatic charges.
 The aluminium content of equipment with metallic enclosure exceeds the limit, the devices must be protected against impact and friction effects.
 Devices should be grounded by connecting their grounding screws to the equipotential system.