4
4
C
C
H
H
A
A
N
N
N
N
E
E
L
L
A
A
N
N
A
A
L
L
O
O
G
G
U
U
E
E
R
R
E
E
C
C
E
E
I
I
V
V
E
E
R
R
2
2
2
2
O
O
F
F
2
2
4
4
1
1
2
2
0
0
-
-
2
2
0
0
8
8
-
-
1
1
2
2
T
T
Y
Y
P
P
E
E
S
S
I
I
L
L
B
B
U
U
S
S
-
-
R
R
X
X
4
4
A
A
U
U
S
S
E
E
R
R
M
M
A
A
N
N
U
U
A
A
L
L
I
I
s
s
s
s
u
u
e
e
:
:
0
0
4
4
7.2 INSTALLATION CONFIGURATION 2
This configuration allows the four channel analogue receiver to be located wholly within the
safe area, the connection of an intrinsically safe SILBUS network, be powered from a non-
intrinsically safe power supply and the connection of non-intrinsically safe analogue
outputs. This configuration is possible because of the segregation and isolation between
the SILBUS network port and the remainder of the receiver.
1
2
14
15
16
17
18
19
20
21
22
23
SIG
COM
+VE
-VE
CH 1
CH 2
CH 3
CH 4
4
CHANNE
L
ANAL
O
G
UE
R
EC
EI
VER
T
YPE
SI
L
B
U
S-
R
X4
A
+
-
+
-
+
-
+
-
+VS1
-VS1
+VS1
+VS1
-VS1
-VS1
LOAD 1
LOAD 2
DISPLAY
TRIP AMP
SI
G
N
AL
C
O
MMO
N
SI
L
BU
S N
ET
W
O
R
K
SAF
E AR
EA
H
AZ
AR
D
O
U
S AR
EA
0 to 20mA
4 to 20mA
SIGNAL
OR
Figure 4 Installation configuration 2
This configuration allows an intrinsically safe SILBUS network to be interfaced with non-
intrinsically safe analogue outputs. This is particularly useful in the monitoring of tripper
drives in underground conveyor installations.
Obviously the segregation of the intrinsically safe SILBUS network is of paramount
importance in this configuration. Incorrectly segregated SILBUS network wiring could
negate the segregation and safety of the receiver and the entire SILBUS network
installation.