KROHNE OPTIFLUX 2000-4000-5000-6000 -IFC 100 Ex EN - Manual (Page 20)

4
ELECTRICAL CONNECTIONS
20
OPTIFLUX
www.krohne.com 04/2009 - 7.30685.22.00 - EX IFC 100 en
4.2 Connection of IFC 100 (C and W version)
For IFC 100 W versions: For IFC 100 W versions: For IFC 100 W versions: For IFC 100 W versions:
The intrinsically safe sensor signal (electrodes) circuit and the non-intrinsically safe sensor coils
circuit are galvanically connected with each other. Both circuits are securely galvanically
isolated from all other non-intrinsically safe circuits up to a peak voltage of 375 V. The sensor
coils circuit shall be connected to a passive load only. For further details about the electrical
connection, see the handbook.
For OPTIFLUX 2100 C / 4100 C only: For OPTIFLUX 2100 C / 4100 C only: For OPTIFLUX 2100 C / 4100 C only: For OPTIFLUX 2100 C / 4100 C only:
The housing must be connected to the equipotential bonding system of the hazardous area. See
EN 60 079-14 clause 6.3. For this purpose the internal or external connection facility (PE clamp)
can be used.
Terminals Terminals Terminals Terminals Circuit Circuit Circuit Circuit Type of protection Ex Type of protection Ex Type of protection Ex Type of protection Ex
L, N, PE Power
100...230 V AC, +10%/-15%, 8 VA, U
m
= 253 V
24 V AC/DC, for connection to a PELV circuit,
U
m
= 253 V,
AC: +10%/-15%, 8 VA
DC: +30%/-25%, 4 W
Ex e
C, C-
D, D-
A, A-, A+
S
Status,
Pulse,
Current,
Screen (frame)
All circuits U
n
≤ 32 V, I
n
≤ 50 mA, U
m
= 253 V for
connection to a PELV circuit
Ex e
IFC 100 W version only: IFC 100 W version only: IFC 100 W version only: IFC 100 W version only:
7, 8,
S
Sensor coils
Screen (frame)
switched DC current, U
n
≤ 20 V, I
n
≤ 160 mA,
prospective short circuit current < 35 A, for connection
to a PELV circuit
Ex e
1, 2, 3,
S
Sensor signal (electrodes)
Screen (frame)
U
o
= 19.7 V, I
o
= 8 mA, P
o
= 40 mW,
C
o
= 180 nF, L
o
= 20 mH
Lineair characteristic
Ex ia IIC