KROHNE OPTIFLEX 2200 IECEX - Manual (Page 22)

3
ELECTRICAL CONNECTIONS
22
OPTIFLEX 2200 C/F
www.krohne.com 04/2013 - 4000861902 - AD IECEX OPTIFLEX2200 R02 en
3.5 Ex ia equipment
3.5.1 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.
3.5.2 Maximum intrinsically-safe values for the electrical circuit
3.5.3 Supply voltage
Level transmitter with the 4...20 mA output option
Level transmitter with the PROFIBUS PA or FOUNDATION 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 ≤24 ≤300 ≤1.2 =1 =0
FISCO ≤17.5 ≤380 ≤5.32 =1 =0
Minimum voltage at output
terminal [VDC]
Maximum voltage at output
terminal [VDC]
Current output terminal 12 1 30 1
1 For a current output of 22 mA
Minimum voltage at output
terminal [VDC]
Maximum voltage at output
terminal [VDC]
Output terminal Entity 9 24
FISCO 9 17.5