Note:
The optocoupler outputs are high-
impedance in case of power failure.
Additional module FCP1:
For second pH redox input, identical to
module FCP1 in the basic version
pH/mV
pH/redox
17
not connected
16
not connected
Ref.
Reference
PM
Potential matching
13
Pt 100, compensation cable
12
Pt 100, sensor cable
11
Pt 100, sensor cable
ASX_FCGA.EPS
Consumer 2
Basic sub-assembly
Electrical properties of contact circuit:
max. output voltage
U
0
, max = 30 V
max. output power
P
a
, max = 750 mW
Outputs with npn transistors. The connections of the emitters (E)
must have negative potential in relation to the collectors (C).
Consumer 1
–
Fig. 4.14
External wiring of
optocoupler outputs on
basic sub-assembly:
only one intrinsically
safe contact circuit
(ia or ib) with a
➀
linear
P
a
= ¼ (U
0
·I
K
)
➁
trapezoidal
1.) U
Z
> 0.5 U
0
:
P
a
= ¼ (U
0
·I
K
)
2.) U
Z
< 0.5 U
0
:
P
a
= (U
0
-U
Z
)·U
i
/R
i
➂
or rectangular
P
a
= U
0
·I
K
output characteristic of
supply G
0
10
20
30
40
50
60
70
80
90
[mA]
2.0
1.5
1.0
0.5
0
[v]
I
C
U
CE
IC
_
UCE.
EPS
Fig. 4.15
Characteristic of
switching transistors on
basic sub-assembly and
module FCYK while
switched-on
pH/
mV
Pt
1
0
0
fcp2con.cdr
Ref
13 12 11
PA/
PM
Fig. 4.16
Connection of
module FCP1
+
G
Installation
mycom CPM 152
14
Hauser
