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3.4 Panel-Mounted Instrument Connections – Fig. 3.5 and Table 3.1
Note. Refer to Fig. 3.2 for Access to Terminals.
Important Note. To locate wires in the terminal blocks, slacken the terminal screws until full clearance is achieved.
Retransmission Output
Normally Closed
Relay 1
Common
Normally Open
Normally Closed
Relay 2
Common
or 'Failed Wiper'
Normally Open
Neutral
Mains Supply
(see Warning below)
4675 Panel Mounted Version for use with 7997 200 Series and 300
Retransmission Output
Normally Closed
Relay 1
Common
Normally Open
Normally Closed
Relay 2
Common
Normally Open
Mains Supply
Neutral
(see Warning below)
If 'Test Cleaner' is selected (Set Up Parameters Page), Relay 2 becomes 'Failed Wiper Alarm' relay
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.
+
1
–
2
3
4
5
6
7
8
9
E
N
Live
L
Earth
Earth Stud (on case)
+
1
–
2
3
4
5
6
7
8
9
E
N
Live
L
Earth
Earth Stud (on case)
4675 Panel Mounted Version for use with 7997 400
Fig. 3.5 Panel-mounted Instrument Connections
Earth Stud
1
2
1
1
3
2
2
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
E
10
N
11
10
L
12
11
12
Earth Stud
1
2
1
1
3
2
2
3
3
4
4
4
5
5
5
6
6
6
7
7
7
8
8
8
9
9
9
E
10
N
11
10
L
12
11
12
3 ELECTRICAL CONNECTIONS...
0V
Rx–
RS485 Serial
Rx+
Interface (If fitted)
Tx–
Tx+
Blue
Black
Turbidity Unit
Green
Red
Yellow
White
Braid
Earth Stud (on case)
0V
Rx–
RS485 Serial
Rx+
Interface (If fitted)
Tx–
Tx+
Blue
Turbidity Unit
Green
Red
Yellow
Discard and insulate
White
black wire in multicore
cable
Braid
Earth Stud (on case)
15
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