Moeller Marine XI/OC SIGNAL MODULES 05/02 AWB2725-1452GB User Manual
05/02 AWB2725-1452GB
Wiring up the I/O signals
11
Wiring up the I/O signals
Wiring up the screw terminal block
Wiring up the spring-loaded terminal block
The spring-loaded terminal block has the same basic design as the
screw terminal block. The difference lies in the way the cable is
connected.
screw terminal block. The difference lies in the way the cable is
connected.
Table 3:
Cable connection
Wiring the digital input module (24 V DC)
• The diodes that are connected in antiparallel to the input
circuits of the module enable operation of the inputs from either
+24 V DC or –24 V DC (see „Internal circuit“ on Page 24).
+24 V DC or –24 V DC (see „Internal circuit“ on Page 24).
• When an ON signal is applied to all inputs, the current drawn
via the input contacts is typically 6.9 mA (XIOC-8DI) or 4 mA
(XIOC-16DI).
(XIOC-16DI).
• Sensors, such as proximity sensors or photoelectric switches,
can be directly attached, provided that they are current-sinking
types (open-collector). Sensors that have a voltage output must
be connected to the inputs via transistors.
types (open-collector). Sensors that have a voltage output must
be connected to the inputs via transistors.
• Use cables with a maximum length of 30 metres.
Figure 9:
Wiring up the screw terminal block
h
Please observe the following notes:
• All terminals have M3 screws.
• Tighten up the screws to a torque of 0.49 to 0.78 Nm.
• If cable lugs are to be used, then they must have a
• Tighten up the screws to a torque of 0.49 to 0.78 Nm.
• If cable lugs are to be used, then they must have a
maximum outside diameter of 6 mm.
• Do not attach more than 2 cable lugs to one terminal.
• Use a cable with a maximum conductor cross-section
• Use a cable with a maximum conductor cross-section
of 0.75 mm
2
, or 0.5 mm
2
if two cable lugs are going to
be fixed to the same terminal.
Conductor
Screw
connection
connection
Spring-loaded
connection
connection
solid core
0.5 to 2.5 mm
2
0.34 to 1.0 mm
2
stranded, with
bootlace ferrule
bootlace ferrule
0.5 to 1.5 mm
2
0.14 to 1.0 mm
2
Figure 10:
Example of external wiring for the DC input XIOC-8DI/
16DI (here 16 DI)
16DI (here 16 DI)
a Proximity switch
24 V
H
a
1
2
3
4
7
C