Moeller Marine XI/OC SIGNAL MODULES 05/02 AWB2725-1452GB User Manual
Signal modules
05/02 AWB2725-1452GB
12
Wiring up the digital output module (24 V DC)
Wiring up the relay output module
RC peak-suppression filter
X
When an inductive load is present, wire an RC peak-suppression
filter (capacitor 0.1 mF and resistor about 100 O) parallel to the
load. For DC loads, free-wheel diodes must be used.
filter (capacitor 0.1 mF and resistor about 100 O) parallel to the
load. For DC loads, free-wheel diodes must be used.
Fuse
X
There is no fuse inside the module. Fit a 6 A fuse in the circuit
(common) to protect the external wiring from being burnt out.
(common) to protect the external wiring from being burnt out.
Supply voltage for relay operation
X
Observe the polarity of the 24 V DC connection. Incorrect wiring
can damage the internal circuitry.
can damage the internal circuitry.
The operating life of a contact is inversely proportional to the
square of the current. Any overload currents that occur, or directly
connected capacitive loads, can therefore drastically reduce the
operating life of a relay.
square of the current. Any overload currents that occur, or directly
connected capacitive loads, can therefore drastically reduce the
operating life of a relay.
The transistor output module is to be preferred for high-frequency
switching operations.
switching operations.
Wiring up the transistor output module
Free-wheel diode
X
When using inductive loads,connect a free-wheel diode in
parallel.
parallel.
S and C terminals
Always connect up the S and C terminals. If the module is operated
without these terminals being connected, then the free-wheel
diodes cannot carry out their function, and there is a danger that
the module will not function correctly, or may even be damaged.
Always connect up the S and C terminals. If the module is operated
without these terminals being connected, then the free-wheel
diodes cannot carry out their function, and there is a danger that
the module will not function correctly, or may even be damaged.
Fuse
A fuse is wired into the common current path, to prevent the
external wiring from being burnt out, but it cannot protect the
transistors. The transistors can, therefore, be destroyed by a short-
circuit of the external load.
A fuse is wired into the common current path, to prevent the
external wiring from being burnt out, but it cannot protect the
transistors. The transistors can, therefore, be destroyed by a short-
circuit of the external load.
If the fuse has blown, then no output signals can be produced,
even though the LED is lit up.
even though the LED is lit up.
Figure 11:
External wiring of the relay output XIOC-12DO-R
a Fuse
b RC peak-suppression filter or diode
b RC peak-suppression filter or diode
Figure 12:
Operating life diagram for the relay contacts
+
0
1
2
3
4
5
C
–
6
7
8
9
10
11
C
h
24 V
H
a
b
24 V
H
100/240 V
h
1000
500
100
10
1
0,1
0,5
1
2
240 V AC, L load
Switching current [A]
Switching operations (
x
10
000)
240 V AC, R load
24 V DC, R load
24 V DC, L load
Figure 13:
External wiring of the transistor output XIOC-8DO/-16DO
(positive logic, source type)
(positive logic, source type)
a Fuse
b Diode
b Diode
i
Caution!
When the blown fuse has been replaced, do not switch on
the power to the module again, until you have found and
removed the cause of the fault.
When the blown fuse has been replaced, do not switch on
the power to the module again, until you have found and
removed the cause of the fault.
0
1
2
3
4
5
6
7
C
8
9
10
11
12
13
14
15
S
a
b
12/24 V
H
+