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...4 ELECTRICAL CONNECTIONS
4.4 Connections – Panel-mounted Instruments – Fig. 4.5
Note. Refer to Fig. 4.1 for Access to Terminals.
Caution. Slacken terminal screws fully before making connections.
Retransmission
output
Normally Closed
Common
Relay 1
Normally Open
Normally Closed
Common
Relay 2
Normally Open
Mains supply
Warning. The power supply earth (ground) must be connected to ensure safety to personnel, reduction of
the effects of RFI interference and correct operation of the power supply interference filter. Connect the earth lead
directly to the case earth stud and not to the 'E' terminal.
1
p
H
E
e l
t c
o r
d
e
S
y
s
e t
m
y T
p
e
7
6
0
0
S
r e
e i
s
2
8
6
7
D
p i
S
s y
e t
m
s
7
6
7
0
F
o l
w
S
s y
e t
m
s
2
8
9
1
I
m
m
e
s r
o i
n
S
s y
e t
m
Refer also to Table 4.1 for connection details on different electrode types.
10
1
2
3
4
5
6
7
8
9
E
N
L
TBA
+
1
–
2
3
4
5
6
7
8
9
E
Neutral
N
Live
L
Earth
Earth Stud (on case)
A
u
o t
m
t a
c i
M
a
n
e T
m
p
e
a r
u t
e r
e T
m
p
e
C
o
m
p
e
n
s
t a
o i
n
C
o
m
p
e
P
a
t r
n
. o
0
3
1
2
6 -
4
2
P
a
t r
n
. o
9
N
t o
a
p
p
c i l
a
b
e l
P
a
t r
n
. o
9
N
t o
a
p
p
c i l
a
b
e l
P
a
t r
n
. o
9
P
a
t r
n
. o
0
3
1
2
6 -
4
2
P
a
t r
n
. o
9
Fig. 4.5 Connections – Panel-mounted Instruments
Earth Stud
1
2
3
4
5
6
7
8
9
10
11
12
TBB
1
0V
2
Rx–
3
Rx+
4
Tx–
5
Tx+
Red
6
7
Red
8
White
9
Reference (black)
10
11
Glass (inner core)
12
Coax Screen
u
l a
a r
u t
e r
n
s
t a
o i
n
1
7
0
3 -
1
0
1
7
0
3 -
0
0
1
7
0
3 -
0
0
1
7
0
3 -
1
0
RS422/RS485
2
Serial
(if fitted)
Interface
4 –ve
(if fitted)
5 +ve
Temperature
Compensator
Electrode System
Earth Stud (on case)
2
Information. The colours relate
to the multicore cable from the
electrode system – see Table 4.1.
Note. When using 2867 Dip
Systems or Redox cartridge systems,
the screen is connected to terminal 9.
nd
Retrans output
2
1
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