KROHNE IFC 210 E-EEx EN - Manual (Page 22)

Sect. 2.5 Part A System installation and start-up
IFC 210 E 05/2002
22
i
Control input C
active
(connection to B2 and/or B1)
j
Control input C
passive
(connection to B2 and/or B1)
U
int
= 22-25 V DC from current output
I
con
≤
4 mA (max. contact rating)
U
ext
I
con
≤
32 V DC /
≤
24 V AC
≤
6 mA (max. contact rating)
k
F/R measurement (F=forward) (R=reverse)
Current output I
active
and/or
pulse output P
aktive
(for EC)
without external changeover relay
l
F/R measurement (F=forward) (R=reverse)
Current output I
passive
and/or
pulse output P
passive
(for EC or EMC)
without external changeover relay
U
int
= 22-25 V DC from current output
I
max
≤
3 mA operation with current output I
I
max
≤ 23 mA operation without current output I
EMC:
EC: U
ext
≤
32 V DC /
I
max
≤
150 mA
U
ext
≤ 32 V DC
≤
24 V AC
f
≤
50 Hz
I
max
≤ 20 mA
Pulses ≤ 1 kHz < 10 kHz
R (load) 1-10 k
Ω
1-3 k
Ω
R = 10 k
Ω
, prevents incorrect counts
when pulse output in open circuit
R = load impedance with EC totalizer operation; for
value refer to table above
* Where frequencies are > 100 Hz, use shielded
cables (RFD) * Where frequencies are > 100 Hz, use shielded
cables (RFD)