KROHNE OPTIWAVE 5200 IECEx - Manual (Page 28)

3
ELECTRICAL CONNECTIONS
28
OPTIWAVE 5200 C/F
www.krohne.com 04/2013 - 4001906102 - AD IECEX OPTIWAVE 5200 R02 en
Remote (Field) version Remote (Field) version Remote (Field) version Remote (Field) version
The communication cable (between the converter electronics and the probe end electronics) is
supplied by the manufacturer for IECEx applications. The communication cable cannot be
changed by the user. For more data, speak to the supplier.
3.7 Ex ic equipment
3.7.1 How to connect the electrical cables
Cable entries are supplied on customer demand. If you supply the cable entries, this part must
have a degree of ingress protection IP≥6x (IEC 60529).
• Use the electrical connection procedure in the Handbook.
• If possible, use galvanically-isolated equipment.
• Supply the Ex i equipment connected to the device. Use only certified intrinsically-safe
equipment.
• Connect only to separate certified, intrinsically-safe circuits. Make sure that the electrical
circuit characteristics are not more than the values that follow.
• Do not remove more than 6 mm / 0.2¨ of insulation from the wire.
3.7.2 Maximum intrinsically-safe values for the electrical circuit
Level transmitter with the FOUNDATION™ fieldbus or PROFIBUS PA output option
Figure 3-11: Electrical schematic for Ex d ia / Ex ia tb-approved equipment with the FOUNDATION™ fieldbus or
PROFIBUS PA output option
1 Approved barrier with entity parameters or FISCO power supply. For more data, refer to Maximum intrinsically-safe
values for the electrical circuit on page 23.
2 Non-Ex zone
3 Ex zone
4 Grounding wire. NOTE: Shielded electrical cable is mandatory for fieldbus output options.
Output option Intrinsically-safe values for the electrical circuit
U
i
I
i
P
i
C
i
L
i
[V] [mA] [W] [nF] [µH]
4...20 mA passive - HART ≤30 ≤300 ≤1 =30 =30
PROFIBUS PA
FOUNDATION™ fieldbus
Entity ≤32 1 1 =1 =0
FISCO ≤17.5 1 1 =1 =0
1 Ii and Pi values are not applicable.