User guide

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 L
¾
L
¾
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
1L
½
0L
½
PE
FE
INTRINSICALLY SAFE
SIGNAL IN-/OUTPUTS L N PE 100-230 Vac
(i.e. MODIS) L
½
L
½
FE 24 Vac/dc
Separation plate
Unused terminal
OPTION: MODIS
Flameproof (EEx d)
terminal feed-through
B
A