KROHNE OPTIFLUX 4040 C Ex EN - Manual (Page 12)

3
ELECTRICAL CONNECTIONS
12
OPTIFLUX 4040 C
www.krohne.com 09/2010 - 7312232100 - AD EX OPTIFLUX 4040 C R01 en
• A safe connection of the IFC 040-EEx signal converter electronics with the equipotential
bonding system is achieved through the zinc-plated mounting frame, which must be securely
screwed to the aluminum signal converter housing (PE potential) by means of two long-
shafted screws. To access the two long-shafted screws it is necessary to unscrew the display
unit and fold it aside. The screws must be tightly secured with a torque of 1.3 Nm (a 2 Pt.
Phillips screwdriver is recommended).
3.4 Safety-technical data
Safety-technical data of output circuits
CAUTION!
The functional-technical data must also be regarded, please see the standard documentation.
Terminal
designation Function Electrical data (per circuit)
Type of protection
"EEx ib" Type of protection
"EEx e"
Circuit 1
I, I
gnd
Current output, passive
(2-wire connection)
4...20 mA, HART
® is
possible.
Maximum values:
U
i
= 30 V, I
i
= 100 mA,
P
i
= 1.0 W
C
i
= 20 nF, L
i
= 0, U
m
= 60 V
U
n
= 14...36 VDC
I
n
= 4...20 mA
U
m
= 250 V
Circuit 2
1L=, 0L=
Additional power supply or
power booster
(4-wire connection).
Additional to Circuit 1
(option).
U
n
= 14...36 VDC
I
n
= 22 mA
U
m
= 250 V
Circuit 3
B1, B
gnd
B2, B
gnd
Passive pulse/status
output 1 / 2
Maximum values:
U
i
= 30 V, I
i
= 100 mA,
P
i
= 1.0 W
C
i
= 0, L
i
= 0, U
m
= 60 V
Maximum values:
U = 36 VDC
I = 100 mA
U
m
= 250 V