KROHNE ALTOFLUX IFM 4080 K EEx EN - Manual (Page 23)

22
7 CONNECTION DIAGRAM
Flow tube
Hazardous locations
of Zone 1 and 2
E
IFS 4000…-EEx
Primary Head
Intrinsically safe electrode circuits
Increased safe field coil circuit
Coil
B1 B
⊥
B2 I+ I L N
BINARY CURRENT MAINS
OUTPUTS OUTPUT SUPPLY
TERMINAL COMPARTMENT
Standard "EEx e" (Optional "EEx d")
ELECTRONICS COMPARTMENT (always "EEx d")
Intrinsically safe ("ib") Increased safe ("e")
electrode circuits field coil circuits
(No. "2", "3", "1") (No. "7", "8")
IFC 090-EEx
Signal Converter
PE
FE
L N PE 100-230 Vac
SIGNAL IN-/OUTPUTS L¾ L¾ FE 24 Vac/dc
EQUIPOTENTIAL BONDING CONDUCTOR
≥ 4 mm
2
(OPTIONAL)
Flameproof (EEx d) cable
feed-through LC-2/EEx
Field coil wires - green/blue
(PTFE insulated copper)
B A
E
Coil
Electrode cables - white/pink (PTFE insulated shielded copper)
IFC 090i-EEx
Signal Converter
x x x x
1L½ 0L½ PE
FE
INTRINSICALLY SAFE
SIGNAL IN-/OUTPUTS
L N PE 100-230 Vac
(i.e. MODIS) L½ L½ FE 24 Vac/dc
Separation plate
Unused terminal
OPTION: MODIS
Flameproof (EEx d)
terminal feed-through
B A