KROHNE OPTISONIC 3400 EN - Manual (Page 45)

ELECTRICAL CONNECTIONS
4
45
OPTISONIC 3400
www.krohne.com 11/2013 - 4002037702 - HB OPTISONIC 3400 -en-R02
Pulse/frequency output active, modular I/Os
• U
nom
= 24 VDC
• f
max
in the operating menu set to f
max
≤ 100 Hz:
I ≤ 20 mA
open:
I ≤ 0.05 mA
closed:
U
0, nom
= 24 V at I = 20 mA
• f
max
in operating menu set to 100 Hz < f
max
≤ 10 kHz:
I ≤ 20 mA
open:
I ≤ 0.05 mA
closed:
U
0, nom
= 22.5 V at I = 1 mA
U
0, nom
= 21.5 V at I = 10 mA
U
0, nom
= 19 V at I = 20 mA
• If the following maximum load impedance R
L, max
is exceeded, the load impedance R
L
must
be reduced accordingly by parallel connection of R:
f ≤ 100 Hz: R
L, max
= 47 kΩ
f ≤ 1 kHz: R
L, max
= 10 kΩ
f ≤ 10 kHz: R
L, max
= 1 kΩ
• The minimum load impedance R
L, min
is calculated as follows:
R
L, min
= (U
ext
- U
0
) / I
max
• X designates the connection terminals A, B or D, depending on the version of the signal
converter.
Figure 4-13: Current output passive I
p
Figure 4-14: Pulse / frequency output active P
a