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ページを印刷する5 TERMINATIONS AND CONNECTIONS
All connections to the repeater are via cage-clamp terminals around the perimeter and near
the front of the DIN rail mounting enclosure, these terminals can accommodate up to 4mm
conductors. There are 6 possible connections to the repeater; these are shown in the
following tables and diagrams:
5.1 POWER INPUT PORT
The repeater operates from a nominal 12 volt DC supply. The power supply operating
range is from 7.5 volts through to 12.6 volts. The SILBUS-A2WCCT2 consumes less than
26mA from the power supply. The table below shows the power input port connection
details.
TERMINAL
14
15
5.2 PRIMARY SILBUS NETWORK PORT
The primary SILBUS network port provides a means for the repeater to be connected to the
primary SILBUS network. Any connections to a SILBUS field bus network pair should be of
a multi-drop nature with spur lengths kept to a minimum. This will minimize any reflections
and therefore communications errors in the SILBUS network.
TERMINAL
16
17
The table above shows the primary SILBUS network port connections.
S
S
I
I
L
L
B
B
U
U
S
S
R
R
E
E
P
P
E
E
A
A
T
T
E
E
R
R
T
T
Y
Y
P
P
E SILBUS-A2WCCT2
E
U
U
S
S
SECONDARY NETWORK
SIG
COM
SECONDARY NETWORK
1
2
SIG COM
REPEAT ER T YPE A2WCCT 2
SIG COM
16 17
PRIMARY NETWORK
SIG
COM
PRIMARY NETWORK
Figure 4 Repeater connection diagram
POWER INPUT PORT TERMINATIONS
DESIGNATION
+VE 12V
-VE 12V
Table 1 Power input port termination details
PRIMARY SILBUS NETWORK PORT TERMINATIONS
DESIGNATION
SIG
COM
Table 2 Primary SILBUS network port termination details
E
E
R
R
'
'
S
S
M
M
A
A
N
N
U
U
A
A
L
L
12V I.S.
PSU
+12V
-12V
14 15
+VE -VE
DESCRIPTION
POWER SUPPLY +VE INPUT
POWER SUPPLY –VE OR COMMON INPUT
DESCRIPTION
SILBUS NETWORK SIGNAL
SILBUS NETWORK COMMON
7
7
O
O
F
F
1
1
0
0
2
120-321-12
I
I
s
s
s
s
u
u
e
e
:
:
0
0
1
1